./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45212159197fe0bc553796025c4b5584a047c150b6d840572b407bf4bd1f9446 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:17:06,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:17:06,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:17:06,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:17:06,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:17:06,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:17:06,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:17:06,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:17:06,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:17:06,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:17:06,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:17:06,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:17:06,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:17:06,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:17:06,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:17:06,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:17:06,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:17:06,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:17:06,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:17:06,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:17:06,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:17:06,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:17:06,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:17:06,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:17:06,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:17:06,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:17:06,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:17:06,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:17:06,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:17:06,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:17:06,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:17:06,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:17:06,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:17:06,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:17:06,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:17:06,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:17:06,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:17:06,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:17:06,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:17:06,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:17:06,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:17:06,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:17:06,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:17:06,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:17:06,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:17:06,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:17:06,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:17:06,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:17:06,761 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:17:06,761 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:17:06,761 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:17:06,761 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:17:06,762 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:17:06,762 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:17:06,763 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:17:06,763 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:17:06,763 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:17:06,763 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:17:06,764 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:17:06,764 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:17:06,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:17:06,765 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:17:06,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:17:06,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:17:06,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:17:06,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:17:06,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:17:06,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:17:06,766 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:17:06,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:17:06,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:17:06,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:17:06,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:17:06,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:17:06,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:17:06,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:17:06,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:17:06,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:17:06,768 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:17:06,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:17:06,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:17:06,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:17:06,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:17:06,770 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45212159197fe0bc553796025c4b5584a047c150b6d840572b407bf4bd1f9446 [2021-11-25 20:17:07,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:17:07,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:17:07,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:17:07,068 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:17:07,069 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:17:07,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c [2021-11-25 20:17:07,126 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/data/dbd88c010/25c5f302747040348680a39f8162b3b1/FLAG1350b3a7d [2021-11-25 20:17:08,121 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:17:08,123 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c [2021-11-25 20:17:08,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/data/dbd88c010/25c5f302747040348680a39f8162b3b1/FLAG1350b3a7d [2021-11-25 20:17:08,452 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/data/dbd88c010/25c5f302747040348680a39f8162b3b1 [2021-11-25 20:17:08,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:17:08,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:17:08,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:17:08,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:17:08,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:17:08,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:17:08" (1/1) ... [2021-11-25 20:17:08,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b61765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:08, skipping insertion in model container [2021-11-25 20:17:08,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:17:08" (1/1) ... [2021-11-25 20:17:08,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:17:08,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:17:11,009 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_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c[380593,380606] [2021-11-25 20:17:11,036 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_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c[383339,383352] [2021-11-25 20:17:11,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:17:11,250 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:17:12,518 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_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c[380593,380606] [2021-11-25 20:17:12,523 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_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-1.c[383339,383352] [2021-11-25 20:17:12,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:17:12,601 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:17:12,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:12 WrapperNode [2021-11-25 20:17:12,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:17:12,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:17:12,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:17:12,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:17:12,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:12" (1/1) ... [2021-11-25 20:17:12,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:12" (1/1) ... [2021-11-25 20:17:13,143 INFO L137 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12682 [2021-11-25 20:17:13,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:17:13,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:17:13,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:17:13,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:17:13,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:12" (1/1) ... [2021-11-25 20:17:13,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:12" (1/1) ... [2021-11-25 20:17:13,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:12" (1/1) ... [2021-11-25 20:17:13,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:12" (1/1) ... [2021-11-25 20:17:13,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:12" (1/1) ... [2021-11-25 20:17:13,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:12" (1/1) ... [2021-11-25 20:17:13,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:12" (1/1) ... [2021-11-25 20:17:13,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:17:13,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:17:13,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:17:13,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:17:13,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:12" (1/1) ... [2021-11-25 20:17:13,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:17:13,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:13,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:17:13,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:17:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:17:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-25 20:17:13,834 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-25 20:17:13,834 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-25 20:17:13,834 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-25 20:17:13,834 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-25 20:17:13,834 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-25 20:17:13,834 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-25 20:17:13,835 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-25 20:17:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-25 20:17:13,835 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-25 20:17:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-25 20:17:13,835 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-25 20:17:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-25 20:17:13,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-25 20:17:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:17:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:17:13,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:17:14,029 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:17:14,031 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:17:21,306 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:17:23,313 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:17:23,313 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-25 20:17:23,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:17:23 BoogieIcfgContainer [2021-11-25 20:17:23,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:17:23,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:17:23,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:17:23,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:17:23,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:17:08" (1/3) ... [2021-11-25 20:17:23,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f3744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:17:23, skipping insertion in model container [2021-11-25 20:17:23,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:12" (2/3) ... [2021-11-25 20:17:23,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f3744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:17:23, skipping insertion in model container [2021-11-25 20:17:23,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:17:23" (3/3) ... [2021-11-25 20:17:23,331 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.03.cil-1.c [2021-11-25 20:17:23,336 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:17:23,336 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 20:17:23,403 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:17:23,412 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=FINITE_AUTOMATA, 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 [2021-11-25 20:17:23,413 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 20:17:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand has 1738 states, 1709 states have (on average 1.9748390871854886) internal successors, (3375), 1714 states have internal predecessors, (3375), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-25 20:17:23,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-25 20:17:23,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:23,471 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] [2021-11-25 20:17:23,471 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:23,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:23,477 INFO L85 PathProgramCache]: Analyzing trace with hash -80638622, now seen corresponding path program 1 times [2021-11-25 20:17:23,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:23,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102884123] [2021-11-25 20:17:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:23,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:17:23,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:23,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102884123] [2021-11-25 20:17:23,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102884123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:23,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:17:23,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:17:23,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955495853] [2021-11-25 20:17:23,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:23,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:17:23,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:23,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:17:23,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:17:23,909 INFO L87 Difference]: Start difference. First operand has 1738 states, 1709 states have (on average 1.9748390871854886) internal successors, (3375), 1714 states have internal predecessors, (3375), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:17:24,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:24,934 INFO L93 Difference]: Finished difference Result 3547 states and 6943 transitions. [2021-11-25 20:17:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:17:24,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2021-11-25 20:17:24,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:24,974 INFO L225 Difference]: With dead ends: 3547 [2021-11-25 20:17:24,974 INFO L226 Difference]: Without dead ends: 1808 [2021-11-25 20:17:24,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:17:24,994 INFO L933 BasicCegarLoop]: 3248 mSDtfsCounter, 3490 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3490 SdHoareTripleChecker+Valid, 6432 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:24,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3490 Valid, 6432 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:17:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2021-11-25 20:17:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1807. [2021-11-25 20:17:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1761 states have (on average 1.9522998296422487) internal successors, (3438), 1765 states have internal predecessors, (3438), 32 states have call successors, (32), 13 states have call predecessors, (32), 12 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-25 20:17:25,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3500 transitions. [2021-11-25 20:17:25,143 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3500 transitions. Word has length 41 [2021-11-25 20:17:25,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:25,143 INFO L470 AbstractCegarLoop]: Abstraction has 1807 states and 3500 transitions. [2021-11-25 20:17:25,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:17:25,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3500 transitions. [2021-11-25 20:17:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 20:17:25,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:25,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:25,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:17:25,151 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:25,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:25,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1871383145, now seen corresponding path program 1 times [2021-11-25 20:17:25,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:25,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858268460] [2021-11-25 20:17:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:25,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:17:25,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:25,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858268460] [2021-11-25 20:17:25,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858268460] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:25,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342863441] [2021-11-25 20:17:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:25,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:25,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:25,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:25,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:17:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:25,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:17:25,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 20:17:25,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:25,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342863441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:25,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:25,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-25 20:17:25,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136150668] [2021-11-25 20:17:25,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:25,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:25,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:25,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:25,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:25,627 INFO L87 Difference]: Start difference. First operand 1807 states and 3500 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 20:17:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:26,125 INFO L93 Difference]: Finished difference Result 2122 states and 3949 transitions. [2021-11-25 20:17:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:26,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2021-11-25 20:17:26,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:26,142 INFO L225 Difference]: With dead ends: 2122 [2021-11-25 20:17:26,143 INFO L226 Difference]: Without dead ends: 1961 [2021-11-25 20:17:26,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:26,146 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 3374 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:26,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3374 Valid, 3301 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:17:26,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2021-11-25 20:17:26,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1955. [2021-11-25 20:17:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1873 states have (on average 1.9183128670581955) internal successors, (3593), 1878 states have internal predecessors, (3593), 56 states have call successors, (56), 25 states have call predecessors, (56), 24 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-25 20:17:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3703 transitions. [2021-11-25 20:17:26,229 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3703 transitions. Word has length 74 [2021-11-25 20:17:26,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:26,230 INFO L470 AbstractCegarLoop]: Abstraction has 1955 states and 3703 transitions. [2021-11-25 20:17:26,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 20:17:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3703 transitions. [2021-11-25 20:17:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 20:17:26,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:26,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:26,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:26,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:26,460 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:26,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash 439132843, now seen corresponding path program 1 times [2021-11-25 20:17:26,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:26,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8477315] [2021-11-25 20:17:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:26,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:17:26,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:26,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8477315] [2021-11-25 20:17:26,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8477315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:26,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261850977] [2021-11-25 20:17:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:26,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:26,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:26,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:26,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:17:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:26,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:17:26,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 20:17:26,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:26,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261850977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:26,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:26,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-25 20:17:26,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627993939] [2021-11-25 20:17:26,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:26,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:26,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:26,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:26,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:26,850 INFO L87 Difference]: Start difference. First operand 1955 states and 3703 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 20:17:27,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:27,328 INFO L93 Difference]: Finished difference Result 2560 states and 4558 transitions. [2021-11-25 20:17:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:27,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2021-11-25 20:17:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:27,347 INFO L225 Difference]: With dead ends: 2560 [2021-11-25 20:17:27,347 INFO L226 Difference]: Without dead ends: 2251 [2021-11-25 20:17:27,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:27,353 INFO L933 BasicCegarLoop]: 3173 mSDtfsCounter, 3371 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3371 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:27,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3371 Valid, 3270 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:17:27,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2021-11-25 20:17:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2243. [2021-11-25 20:17:27,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2091 states have (on average 1.860832137733142) internal successors, (3891), 2098 states have internal predecessors, (3891), 102 states have call successors, (102), 49 states have call predecessors, (102), 48 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2021-11-25 20:17:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 4093 transitions. [2021-11-25 20:17:27,468 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 4093 transitions. Word has length 74 [2021-11-25 20:17:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:27,468 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 4093 transitions. [2021-11-25 20:17:27,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 20:17:27,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 4093 transitions. [2021-11-25 20:17:27,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 20:17:27,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:27,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:27,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:27,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:27,693 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:27,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:27,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1048460887, now seen corresponding path program 1 times [2021-11-25 20:17:27,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:27,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309882737] [2021-11-25 20:17:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:27,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 20:17:27,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:27,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309882737] [2021-11-25 20:17:27,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309882737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:27,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:17:27,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:17:27,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694022510] [2021-11-25 20:17:27,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:27,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:17:27,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:17:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:27,829 INFO L87 Difference]: Start difference. First operand 2243 states and 4093 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 20:17:28,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:28,926 INFO L93 Difference]: Finished difference Result 3547 states and 5884 transitions. [2021-11-25 20:17:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 20:17:28,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 74 [2021-11-25 20:17:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:28,949 INFO L225 Difference]: With dead ends: 3547 [2021-11-25 20:17:28,949 INFO L226 Difference]: Without dead ends: 2951 [2021-11-25 20:17:28,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:17:28,954 INFO L933 BasicCegarLoop]: 3180 mSDtfsCounter, 3607 mSDsluCounter, 10080 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3619 SdHoareTripleChecker+Valid, 12580 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:28,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3619 Valid, 12580 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:17:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-11-25 20:17:29,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2787. [2021-11-25 20:17:29,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2499 states have (on average 1.776310524209684) internal successors, (4439), 2510 states have internal predecessors, (4439), 190 states have call successors, (190), 97 states have call predecessors, (190), 96 states have return successors, (188), 180 states have call predecessors, (188), 188 states have call successors, (188) [2021-11-25 20:17:29,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4817 transitions. [2021-11-25 20:17:29,126 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4817 transitions. Word has length 74 [2021-11-25 20:17:29,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:29,128 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 4817 transitions. [2021-11-25 20:17:29,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 20:17:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4817 transitions. [2021-11-25 20:17:29,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 20:17:29,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:29,136 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-25 20:17:29,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:17:29,143 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:29,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1907703505, now seen corresponding path program 1 times [2021-11-25 20:17:29,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:29,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588196722] [2021-11-25 20:17:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:29,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 20:17:29,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:29,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588196722] [2021-11-25 20:17:29,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588196722] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:29,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617261169] [2021-11-25 20:17:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:29,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:29,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:29,275 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:29,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:17:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:29,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:17:29,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 20:17:29,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:29,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617261169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:29,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:29,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 20:17:29,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566105144] [2021-11-25 20:17:29,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:29,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:29,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:29,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:29,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:17:29,593 INFO L87 Difference]: Start difference. First operand 2787 states and 4817 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 20:17:30,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:30,139 INFO L93 Difference]: Finished difference Result 3674 states and 6046 transitions. [2021-11-25 20:17:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:30,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2021-11-25 20:17:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:30,163 INFO L225 Difference]: With dead ends: 3674 [2021-11-25 20:17:30,164 INFO L226 Difference]: Without dead ends: 3070 [2021-11-25 20:17:30,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:17:30,170 INFO L933 BasicCegarLoop]: 3211 mSDtfsCounter, 44 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:30,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 6376 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:17:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2021-11-25 20:17:30,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 2939. [2021-11-25 20:17:30,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2635 states have (on average 1.7666034155597723) internal successors, (4655), 2646 states have internal predecessors, (4655), 198 states have call successors, (198), 105 states have call predecessors, (198), 104 states have return successors, (196), 188 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-25 20:17:30,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 5049 transitions. [2021-11-25 20:17:30,419 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 5049 transitions. Word has length 87 [2021-11-25 20:17:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:30,421 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 5049 transitions. [2021-11-25 20:17:30,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 20:17:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 5049 transitions. [2021-11-25 20:17:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 20:17:30,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:30,433 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 20:17:30,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:30,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:30,655 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:30,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1350820621, now seen corresponding path program 1 times [2021-11-25 20:17:30,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:30,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995481225] [2021-11-25 20:17:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:30,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-25 20:17:30,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:30,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995481225] [2021-11-25 20:17:30,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995481225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:30,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:17:30,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:17:30,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295999456] [2021-11-25 20:17:30,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:30,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:30,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:30,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:30,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:17:30,750 INFO L87 Difference]: Start difference. First operand 2939 states and 5049 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:17:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:31,223 INFO L93 Difference]: Finished difference Result 4876 states and 7734 transitions. [2021-11-25 20:17:31,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:31,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 97 [2021-11-25 20:17:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:31,248 INFO L225 Difference]: With dead ends: 4876 [2021-11-25 20:17:31,248 INFO L226 Difference]: Without dead ends: 3583 [2021-11-25 20:17:31,254 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 [2021-11-25 20:17:31,255 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 3367 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:31,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3367 Valid, 3301 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:17:31,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2021-11-25 20:17:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 3567. [2021-11-25 20:17:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3567 states, 3119 states have (on average 1.7015068932350113) internal successors, (5307), 3134 states have internal predecessors, (5307), 290 states have call successors, (290), 157 states have call predecessors, (290), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2021-11-25 20:17:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3567 states to 3567 states and 5885 transitions. [2021-11-25 20:17:31,417 INFO L78 Accepts]: Start accepts. Automaton has 3567 states and 5885 transitions. Word has length 97 [2021-11-25 20:17:31,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:31,417 INFO L470 AbstractCegarLoop]: Abstraction has 3567 states and 5885 transitions. [2021-11-25 20:17:31,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:17:31,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3567 states and 5885 transitions. [2021-11-25 20:17:31,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-25 20:17:31,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:31,427 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:31,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:17:31,428 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:31,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:31,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2010449581, now seen corresponding path program 1 times [2021-11-25 20:17:31,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:31,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548522352] [2021-11-25 20:17:31,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:31,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:17:31,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:31,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548522352] [2021-11-25 20:17:31,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548522352] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:31,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087558239] [2021-11-25 20:17:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:31,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:31,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:31,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:31,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:17:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:31,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:17:31,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:17:31,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:31,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087558239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:31,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:31,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 20:17:31,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403607659] [2021-11-25 20:17:31,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:31,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:31,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:31,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:31,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:17:31,831 INFO L87 Difference]: Start difference. First operand 3567 states and 5885 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:17:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:32,392 INFO L93 Difference]: Finished difference Result 4871 states and 7755 transitions. [2021-11-25 20:17:32,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:32,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2021-11-25 20:17:32,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:32,417 INFO L225 Difference]: With dead ends: 4871 [2021-11-25 20:17:32,417 INFO L226 Difference]: Without dead ends: 3579 [2021-11-25 20:17:32,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:17:32,424 INFO L933 BasicCegarLoop]: 3224 mSDtfsCounter, 99 mSDsluCounter, 3385 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 6378 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:32,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 6378 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:17:32,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2021-11-25 20:17:32,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3559. [2021-11-25 20:17:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3559 states, 3111 states have (on average 1.6904532304725168) internal successors, (5259), 3126 states have internal predecessors, (5259), 290 states have call successors, (290), 157 states have call predecessors, (290), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2021-11-25 20:17:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 5837 transitions. [2021-11-25 20:17:32,587 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 5837 transitions. Word has length 110 [2021-11-25 20:17:32,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:32,588 INFO L470 AbstractCegarLoop]: Abstraction has 3559 states and 5837 transitions. [2021-11-25 20:17:32,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:17:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 5837 transitions. [2021-11-25 20:17:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-25 20:17:32,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:32,596 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:32,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:32,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 20:17:32,823 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:32,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:32,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1039064533, now seen corresponding path program 1 times [2021-11-25 20:17:32,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:32,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187530135] [2021-11-25 20:17:32,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:32,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:17:32,897 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:32,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187530135] [2021-11-25 20:17:32,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187530135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:32,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073051123] [2021-11-25 20:17:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:32,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:32,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:32,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:32,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:17:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:33,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:17:33,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 20:17:33,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:33,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073051123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:33,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:33,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 20:17:33,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585655338] [2021-11-25 20:17:33,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:33,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:33,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:33,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:33,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:17:33,231 INFO L87 Difference]: Start difference. First operand 3559 states and 5837 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:17:33,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:33,706 INFO L93 Difference]: Finished difference Result 5287 states and 8126 transitions. [2021-11-25 20:17:33,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:33,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2021-11-25 20:17:33,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:33,753 INFO L225 Difference]: With dead ends: 5287 [2021-11-25 20:17:33,754 INFO L226 Difference]: Without dead ends: 4007 [2021-11-25 20:17:33,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:17:33,760 INFO L933 BasicCegarLoop]: 3174 mSDtfsCounter, 3377 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:33,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3377 Valid, 3198 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:17:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2021-11-25 20:17:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 4007. [2021-11-25 20:17:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 3495 states have (on average 1.6317596566523604) internal successors, (5703), 3510 states have internal predecessors, (5703), 310 states have call successors, (310), 201 states have call predecessors, (310), 200 states have return successors, (308), 296 states have call predecessors, (308), 308 states have call successors, (308) [2021-11-25 20:17:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 6321 transitions. [2021-11-25 20:17:33,983 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 6321 transitions. Word has length 110 [2021-11-25 20:17:33,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:33,985 INFO L470 AbstractCegarLoop]: Abstraction has 4007 states and 6321 transitions. [2021-11-25 20:17:33,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:17:33,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 6321 transitions. [2021-11-25 20:17:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-25 20:17:33,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:33,996 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:34,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:34,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 20:17:34,223 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:34,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:34,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1242342922, now seen corresponding path program 1 times [2021-11-25 20:17:34,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:34,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565033016] [2021-11-25 20:17:34,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:34,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:17:34,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:34,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565033016] [2021-11-25 20:17:34,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565033016] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:34,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901908988] [2021-11-25 20:17:34,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:34,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:34,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:34,379 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:34,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:17:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:34,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:17:34,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 20:17:34,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:34,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901908988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:34,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:34,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 20:17:34,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118655259] [2021-11-25 20:17:34,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:34,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:34,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:34,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:34,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:17:34,818 INFO L87 Difference]: Start difference. First operand 4007 states and 6321 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:17:35,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:35,397 INFO L93 Difference]: Finished difference Result 7199 states and 10524 transitions. [2021-11-25 20:17:35,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:35,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2021-11-25 20:17:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:35,416 INFO L225 Difference]: With dead ends: 7199 [2021-11-25 20:17:35,416 INFO L226 Difference]: Without dead ends: 4839 [2021-11-25 20:17:35,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:17:35,424 INFO L933 BasicCegarLoop]: 3183 mSDtfsCounter, 57 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:35,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 6333 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:17:35,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2021-11-25 20:17:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 4235. [2021-11-25 20:17:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 3695 states have (on average 1.6267929634641407) internal successors, (6011), 3711 states have internal predecessors, (6011), 324 states have call successors, (324), 215 states have call predecessors, (324), 214 states have return successors, (322), 309 states have call predecessors, (322), 322 states have call successors, (322) [2021-11-25 20:17:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 6657 transitions. [2021-11-25 20:17:35,632 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 6657 transitions. Word has length 111 [2021-11-25 20:17:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:35,633 INFO L470 AbstractCegarLoop]: Abstraction has 4235 states and 6657 transitions. [2021-11-25 20:17:35,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:17:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 6657 transitions. [2021-11-25 20:17:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-25 20:17:35,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:35,642 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:35,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:35,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:35,859 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:35,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:35,859 INFO L85 PathProgramCache]: Analyzing trace with hash -443592681, now seen corresponding path program 1 times [2021-11-25 20:17:35,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:35,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202902576] [2021-11-25 20:17:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:35,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-25 20:17:35,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:35,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202902576] [2021-11-25 20:17:35,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202902576] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:35,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553387919] [2021-11-25 20:17:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:35,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:35,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:35,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:35,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 20:17:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:36,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:17:36,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 20:17:36,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:36,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553387919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:36,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:36,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 20:17:36,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358269064] [2021-11-25 20:17:36,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:36,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:36,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:36,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:36,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:36,259 INFO L87 Difference]: Start difference. First operand 4235 states and 6657 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:17:36,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:36,830 INFO L93 Difference]: Finished difference Result 6519 states and 9705 transitions. [2021-11-25 20:17:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:36,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2021-11-25 20:17:36,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:36,849 INFO L225 Difference]: With dead ends: 6519 [2021-11-25 20:17:36,849 INFO L226 Difference]: Without dead ends: 4793 [2021-11-25 20:17:36,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:36,856 INFO L933 BasicCegarLoop]: 3212 mSDtfsCounter, 60 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 6378 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:36,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 6378 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:17:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2021-11-25 20:17:37,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4515. [2021-11-25 20:17:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4515 states, 3943 states have (on average 1.623890438752219) internal successors, (6403), 3959 states have internal predecessors, (6403), 340 states have call successors, (340), 231 states have call predecessors, (340), 230 states have return successors, (338), 325 states have call predecessors, (338), 338 states have call successors, (338) [2021-11-25 20:17:37,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4515 states to 4515 states and 7081 transitions. [2021-11-25 20:17:37,054 INFO L78 Accepts]: Start accepts. Automaton has 4515 states and 7081 transitions. Word has length 111 [2021-11-25 20:17:37,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:37,055 INFO L470 AbstractCegarLoop]: Abstraction has 4515 states and 7081 transitions. [2021-11-25 20:17:37,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:17:37,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4515 states and 7081 transitions. [2021-11-25 20:17:37,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-25 20:17:37,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:37,067 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:37,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-25 20:17:37,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 20:17:37,283 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:37,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:37,283 INFO L85 PathProgramCache]: Analyzing trace with hash 497641982, now seen corresponding path program 1 times [2021-11-25 20:17:37,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:37,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79148371] [2021-11-25 20:17:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:37,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-25 20:17:37,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:37,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79148371] [2021-11-25 20:17:37,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79148371] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:37,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070309094] [2021-11-25 20:17:37,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:37,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:37,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:37,357 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:37,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 20:17:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:37,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:17:37,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 20:17:37,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:37,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070309094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:37,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:37,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 20:17:37,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023423108] [2021-11-25 20:17:37,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:37,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:37,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:37,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:37,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:37,651 INFO L87 Difference]: Start difference. First operand 4515 states and 7081 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:17:38,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:38,219 INFO L93 Difference]: Finished difference Result 6981 states and 10437 transitions. [2021-11-25 20:17:38,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:38,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2021-11-25 20:17:38,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:38,235 INFO L225 Difference]: With dead ends: 6981 [2021-11-25 20:17:38,236 INFO L226 Difference]: Without dead ends: 5503 [2021-11-25 20:17:38,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:38,243 INFO L933 BasicCegarLoop]: 3230 mSDtfsCounter, 65 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6396 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:38,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 6396 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:17:38,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2021-11-25 20:17:38,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 4995. [2021-11-25 20:17:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4995 states, 4359 states have (on average 1.6102317045193852) internal successors, (7019), 4375 states have internal predecessors, (7019), 372 states have call successors, (372), 263 states have call predecessors, (372), 262 states have return successors, (370), 357 states have call predecessors, (370), 370 states have call successors, (370) [2021-11-25 20:17:38,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4995 states to 4995 states and 7761 transitions. [2021-11-25 20:17:38,568 INFO L78 Accepts]: Start accepts. Automaton has 4995 states and 7761 transitions. Word has length 112 [2021-11-25 20:17:38,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:38,569 INFO L470 AbstractCegarLoop]: Abstraction has 4995 states and 7761 transitions. [2021-11-25 20:17:38,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:17:38,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4995 states and 7761 transitions. [2021-11-25 20:17:38,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-25 20:17:38,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:38,579 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:38,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:38,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:38,806 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:38,807 INFO L85 PathProgramCache]: Analyzing trace with hash -822233954, now seen corresponding path program 1 times [2021-11-25 20:17:38,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:38,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003215090] [2021-11-25 20:17:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:38,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-25 20:17:38,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:38,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003215090] [2021-11-25 20:17:38,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003215090] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:38,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076168489] [2021-11-25 20:17:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:38,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:38,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:38,865 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:38,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 20:17:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:38,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:17:38,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 20:17:39,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:39,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076168489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:39,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:39,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 20:17:39,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666283927] [2021-11-25 20:17:39,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:39,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:39,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:39,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:39,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:39,182 INFO L87 Difference]: Start difference. First operand 4995 states and 7761 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:17:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:39,729 INFO L93 Difference]: Finished difference Result 7977 states and 11825 transitions. [2021-11-25 20:17:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:39,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2021-11-25 20:17:39,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:39,750 INFO L225 Difference]: With dead ends: 7977 [2021-11-25 20:17:39,751 INFO L226 Difference]: Without dead ends: 6251 [2021-11-25 20:17:39,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:39,758 INFO L933 BasicCegarLoop]: 3235 mSDtfsCounter, 71 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 6401 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:39,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 6401 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:17:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2021-11-25 20:17:39,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 5659. [2021-11-25 20:17:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5659 states, 4927 states have (on average 1.5894053176375076) internal successors, (7831), 4943 states have internal predecessors, (7831), 420 states have call successors, (420), 311 states have call predecessors, (420), 310 states have return successors, (418), 405 states have call predecessors, (418), 418 states have call successors, (418) [2021-11-25 20:17:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5659 states to 5659 states and 8669 transitions. [2021-11-25 20:17:40,011 INFO L78 Accepts]: Start accepts. Automaton has 5659 states and 8669 transitions. Word has length 112 [2021-11-25 20:17:40,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:40,011 INFO L470 AbstractCegarLoop]: Abstraction has 5659 states and 8669 transitions. [2021-11-25 20:17:40,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:17:40,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5659 states and 8669 transitions. [2021-11-25 20:17:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-25 20:17:40,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:40,024 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:40,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-25 20:17:40,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 20:17:40,243 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:40,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:40,243 INFO L85 PathProgramCache]: Analyzing trace with hash -424628435, now seen corresponding path program 1 times [2021-11-25 20:17:40,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:40,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884754034] [2021-11-25 20:17:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:40,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:17:40,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:40,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884754034] [2021-11-25 20:17:40,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884754034] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:40,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582094291] [2021-11-25 20:17:40,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:40,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:40,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:40,331 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:40,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 20:17:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:40,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 20:17:40,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-25 20:17:40,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:40,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582094291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:40,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:40,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-25 20:17:40,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332576927] [2021-11-25 20:17:40,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:40,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:17:40,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:40,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:17:40,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:17:40,669 INFO L87 Difference]: Start difference. First operand 5659 states and 8669 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:17:41,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:41,611 INFO L93 Difference]: Finished difference Result 11169 states and 16023 transitions. [2021-11-25 20:17:41,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:17:41,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 112 [2021-11-25 20:17:41,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:41,632 INFO L225 Difference]: With dead ends: 11169 [2021-11-25 20:17:41,632 INFO L226 Difference]: Without dead ends: 7157 [2021-11-25 20:17:41,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:17:41,644 INFO L933 BasicCegarLoop]: 3181 mSDtfsCounter, 3573 mSDsluCounter, 6745 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3585 SdHoareTripleChecker+Valid, 9465 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:41,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3585 Valid, 9465 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:17:41,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2021-11-25 20:17:41,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7153. [2021-11-25 20:17:42,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7153 states, 6119 states have (on average 1.5275371792776598) internal successors, (9347), 6141 states have internal predecessors, (9347), 594 states have call successors, (594), 439 states have call predecessors, (594), 438 states have return successors, (592), 573 states have call predecessors, (592), 592 states have call successors, (592) [2021-11-25 20:17:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 10533 transitions. [2021-11-25 20:17:42,092 INFO L78 Accepts]: Start accepts. Automaton has 7153 states and 10533 transitions. Word has length 112 [2021-11-25 20:17:42,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:42,093 INFO L470 AbstractCegarLoop]: Abstraction has 7153 states and 10533 transitions. [2021-11-25 20:17:42,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:17:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 7153 states and 10533 transitions. [2021-11-25 20:17:42,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-25 20:17:42,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:42,110 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:42,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:42,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:42,339 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:42,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:42,339 INFO L85 PathProgramCache]: Analyzing trace with hash -783587086, now seen corresponding path program 1 times [2021-11-25 20:17:42,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:42,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741746849] [2021-11-25 20:17:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:42,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-25 20:17:42,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:42,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741746849] [2021-11-25 20:17:42,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741746849] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:42,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514875215] [2021-11-25 20:17:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:42,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:42,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:42,420 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:42,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 20:17:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:42,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 20:17:42,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 20:17:42,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:42,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514875215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:42,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:42,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-25 20:17:42,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734573191] [2021-11-25 20:17:42,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:42,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:17:42,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:17:42,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:17:42,734 INFO L87 Difference]: Start difference. First operand 7153 states and 10533 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:17:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:43,838 INFO L93 Difference]: Finished difference Result 14750 states and 20484 transitions. [2021-11-25 20:17:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:17:43,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 113 [2021-11-25 20:17:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:43,870 INFO L225 Difference]: With dead ends: 14750 [2021-11-25 20:17:43,871 INFO L226 Difference]: Without dead ends: 9244 [2021-11-25 20:17:43,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:17:43,887 INFO L933 BasicCegarLoop]: 3173 mSDtfsCounter, 3583 mSDsluCounter, 6739 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3595 SdHoareTripleChecker+Valid, 9452 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:43,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3595 Valid, 9452 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:17:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9244 states. [2021-11-25 20:17:44,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9244 to 9240. [2021-11-25 20:17:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9240 states, 7776 states have (on average 1.4681069958847737) internal successors, (11416), 7807 states have internal predecessors, (11416), 842 states have call successors, (842), 621 states have call predecessors, (842), 620 states have return successors, (840), 812 states have call predecessors, (840), 840 states have call successors, (840) [2021-11-25 20:17:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9240 states to 9240 states and 13098 transitions. [2021-11-25 20:17:44,497 INFO L78 Accepts]: Start accepts. Automaton has 9240 states and 13098 transitions. Word has length 113 [2021-11-25 20:17:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:44,498 INFO L470 AbstractCegarLoop]: Abstraction has 9240 states and 13098 transitions. [2021-11-25 20:17:44,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:17:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 9240 states and 13098 transitions. [2021-11-25 20:17:44,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-25 20:17:44,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:44,518 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:44,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:44,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 20:17:44,735 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:44,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:44,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1680690482, now seen corresponding path program 1 times [2021-11-25 20:17:44,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:44,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801092279] [2021-11-25 20:17:44,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:44,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:17:44,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:44,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801092279] [2021-11-25 20:17:44,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801092279] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:44,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174585936] [2021-11-25 20:17:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:44,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:44,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:44,812 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:44,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 20:17:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:44,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:17:44,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 20:17:45,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:45,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174585936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:45,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:45,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-25 20:17:45,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873989091] [2021-11-25 20:17:45,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:45,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:17:45,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:45,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:17:45,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:17:45,154 INFO L87 Difference]: Start difference. First operand 9240 states and 13098 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 20:17:46,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:46,009 INFO L93 Difference]: Finished difference Result 12457 states and 17284 transitions. [2021-11-25 20:17:46,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:17:46,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2021-11-25 20:17:46,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:46,042 INFO L225 Difference]: With dead ends: 12457 [2021-11-25 20:17:46,043 INFO L226 Difference]: Without dead ends: 9712 [2021-11-25 20:17:46,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:17:46,053 INFO L933 BasicCegarLoop]: 3234 mSDtfsCounter, 3381 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 6557 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:46,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3381 Valid, 6557 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:17:46,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2021-11-25 20:17:46,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 9482. [2021-11-25 20:17:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9482 states, 7971 states have (on average 1.4629281144147535) internal successors, (11661), 8020 states have internal predecessors, (11661), 849 states have call successors, (849), 625 states have call predecessors, (849), 660 states have return successors, (883), 837 states have call predecessors, (883), 847 states have call successors, (883) [2021-11-25 20:17:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9482 states to 9482 states and 13393 transitions. [2021-11-25 20:17:46,544 INFO L78 Accepts]: Start accepts. Automaton has 9482 states and 13393 transitions. Word has length 117 [2021-11-25 20:17:46,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:46,545 INFO L470 AbstractCegarLoop]: Abstraction has 9482 states and 13393 transitions. [2021-11-25 20:17:46,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 20:17:46,545 INFO L276 IsEmpty]: Start isEmpty. Operand 9482 states and 13393 transitions. [2021-11-25 20:17:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 20:17:46,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:46,560 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:46,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-25 20:17:46,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 20:17:46,782 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:46,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1618670207, now seen corresponding path program 1 times [2021-11-25 20:17:46,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:46,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651399115] [2021-11-25 20:17:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:46,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:17:46,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:46,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651399115] [2021-11-25 20:17:46,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651399115] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:46,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194960218] [2021-11-25 20:17:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:46,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:46,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:46,843 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:46,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 20:17:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:46,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:17:46,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-25 20:17:47,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:47,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194960218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:47,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:47,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-25 20:17:47,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255655191] [2021-11-25 20:17:47,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:47,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:47,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:47,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:47,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:17:47,161 INFO L87 Difference]: Start difference. First operand 9482 states and 13393 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:17:47,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:47,846 INFO L93 Difference]: Finished difference Result 12293 states and 17122 transitions. [2021-11-25 20:17:47,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:47,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2021-11-25 20:17:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:47,972 INFO L225 Difference]: With dead ends: 12293 [2021-11-25 20:17:47,973 INFO L226 Difference]: Without dead ends: 9224 [2021-11-25 20:17:47,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:17:47,981 INFO L933 BasicCegarLoop]: 3176 mSDtfsCounter, 22 mSDsluCounter, 3388 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 6335 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:47,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 6335 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:17:47,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9224 states. [2021-11-25 20:17:48,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9224 to 8786. [2021-11-25 20:17:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8786 states, 7383 states have (on average 1.4758228362454286) internal successors, (10896), 7405 states have internal predecessors, (10896), 813 states have call successors, (813), 589 states have call predecessors, (813), 588 states have return successors, (811), 792 states have call predecessors, (811), 811 states have call successors, (811) [2021-11-25 20:17:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8786 states to 8786 states and 12520 transitions. [2021-11-25 20:17:48,410 INFO L78 Accepts]: Start accepts. Automaton has 8786 states and 12520 transitions. Word has length 118 [2021-11-25 20:17:48,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:48,411 INFO L470 AbstractCegarLoop]: Abstraction has 8786 states and 12520 transitions. [2021-11-25 20:17:48,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:17:48,411 INFO L276 IsEmpty]: Start isEmpty. Operand 8786 states and 12520 transitions. [2021-11-25 20:17:48,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 20:17:48,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:48,425 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:48,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:48,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:48,639 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:48,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash 595953052, now seen corresponding path program 1 times [2021-11-25 20:17:48,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:48,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077853813] [2021-11-25 20:17:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:48,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-25 20:17:48,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:48,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077853813] [2021-11-25 20:17:48,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077853813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:48,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623624729] [2021-11-25 20:17:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:48,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:48,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:48,735 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:48,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 20:17:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:48,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:17:48,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:49,042 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 20:17:49,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:49,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623624729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:49,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:49,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2021-11-25 20:17:49,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902224484] [2021-11-25 20:17:49,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:49,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:49,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:49,043 INFO L87 Difference]: Start difference. First operand 8786 states and 12520 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:17:49,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:49,555 INFO L93 Difference]: Finished difference Result 14823 states and 20438 transitions. [2021-11-25 20:17:49,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:49,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2021-11-25 20:17:49,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:49,586 INFO L225 Difference]: With dead ends: 14823 [2021-11-25 20:17:49,586 INFO L226 Difference]: Without dead ends: 9813 [2021-11-25 20:17:49,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:17:49,601 INFO L933 BasicCegarLoop]: 3183 mSDtfsCounter, 3352 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3352 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:49,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3352 Valid, 3214 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:17:49,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9813 states. [2021-11-25 20:17:50,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9813 to 9721. [2021-11-25 20:17:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9721 states, 8243 states have (on average 1.4396457600388208) internal successors, (11867), 8265 states have internal predecessors, (11867), 823 states have call successors, (823), 654 states have call predecessors, (823), 653 states have return successors, (877), 802 states have call predecessors, (877), 821 states have call successors, (877) [2021-11-25 20:17:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9721 states to 9721 states and 13567 transitions. [2021-11-25 20:17:50,092 INFO L78 Accepts]: Start accepts. Automaton has 9721 states and 13567 transitions. Word has length 118 [2021-11-25 20:17:50,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:50,093 INFO L470 AbstractCegarLoop]: Abstraction has 9721 states and 13567 transitions. [2021-11-25 20:17:50,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:17:50,093 INFO L276 IsEmpty]: Start isEmpty. Operand 9721 states and 13567 transitions. [2021-11-25 20:17:50,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 20:17:50,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:50,109 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:50,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:50,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-25 20:17:50,335 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:50,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:50,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1079104132, now seen corresponding path program 1 times [2021-11-25 20:17:50,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:50,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117415108] [2021-11-25 20:17:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:50,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-25 20:17:50,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:50,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117415108] [2021-11-25 20:17:50,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117415108] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:50,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066172594] [2021-11-25 20:17:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:50,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:50,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:50,395 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:50,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 20:17:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:50,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:17:50,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 20:17:50,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:17:50,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066172594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:50,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:17:50,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-25 20:17:50,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839450835] [2021-11-25 20:17:50,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:50,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:17:50,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:17:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:17:50,692 INFO L87 Difference]: Start difference. First operand 9721 states and 13567 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:17:51,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:51,309 INFO L93 Difference]: Finished difference Result 15347 states and 21023 transitions. [2021-11-25 20:17:51,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:17:51,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2021-11-25 20:17:51,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:51,336 INFO L225 Difference]: With dead ends: 15347 [2021-11-25 20:17:51,336 INFO L226 Difference]: Without dead ends: 9707 [2021-11-25 20:17:51,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:17:51,351 INFO L933 BasicCegarLoop]: 3241 mSDtfsCounter, 94 mSDsluCounter, 3384 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 6394 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:51,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 6394 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:17:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9707 states. [2021-11-25 20:17:51,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9707 to 9593. [2021-11-25 20:17:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9593 states, 8115 states have (on average 1.418977202711029) internal successors, (11515), 8137 states have internal predecessors, (11515), 823 states have call successors, (823), 654 states have call predecessors, (823), 653 states have return successors, (877), 802 states have call predecessors, (877), 821 states have call successors, (877) [2021-11-25 20:17:51,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9593 states to 9593 states and 13215 transitions. [2021-11-25 20:17:51,993 INFO L78 Accepts]: Start accepts. Automaton has 9593 states and 13215 transitions. Word has length 118 [2021-11-25 20:17:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:51,994 INFO L470 AbstractCegarLoop]: Abstraction has 9593 states and 13215 transitions. [2021-11-25 20:17:51,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:17:51,994 INFO L276 IsEmpty]: Start isEmpty. Operand 9593 states and 13215 transitions. [2021-11-25 20:17:52,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 20:17:52,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:52,012 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:52,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:52,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 20:17:52,227 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:52,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:52,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1150759272, now seen corresponding path program 1 times [2021-11-25 20:17:52,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:52,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628566727] [2021-11-25 20:17:52,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:52,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-25 20:17:52,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:52,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628566727] [2021-11-25 20:17:52,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628566727] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:52,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358235087] [2021-11-25 20:17:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:52,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:52,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:52,288 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:52,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 20:17:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:52,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 20:17:52,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 43 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 20:17:52,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:17:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:17:53,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358235087] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:53,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:17:53,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 8] total 13 [2021-11-25 20:17:53,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264313404] [2021-11-25 20:17:53,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:53,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:17:53,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:53,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:17:53,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:17:53,254 INFO L87 Difference]: Start difference. First operand 9593 states and 13215 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:17:54,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:54,116 INFO L93 Difference]: Finished difference Result 14593 states and 19514 transitions. [2021-11-25 20:17:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:17:54,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 115 [2021-11-25 20:17:54,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:54,136 INFO L225 Difference]: With dead ends: 14593 [2021-11-25 20:17:54,136 INFO L226 Difference]: Without dead ends: 10549 [2021-11-25 20:17:54,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:17:54,146 INFO L933 BasicCegarLoop]: 3203 mSDtfsCounter, 3377 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 6393 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:54,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3377 Valid, 6393 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:17:54,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10549 states. [2021-11-25 20:17:54,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10549 to 10336. [2021-11-25 20:17:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10336 states, 8810 states have (on average 1.3917139614074916) internal successors, (12261), 8832 states have internal predecessors, (12261), 829 states have call successors, (829), 696 states have call predecessors, (829), 695 states have return successors, (879), 808 states have call predecessors, (879), 827 states have call successors, (879) [2021-11-25 20:17:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10336 states to 10336 states and 13969 transitions. [2021-11-25 20:17:54,650 INFO L78 Accepts]: Start accepts. Automaton has 10336 states and 13969 transitions. Word has length 115 [2021-11-25 20:17:54,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:54,651 INFO L470 AbstractCegarLoop]: Abstraction has 10336 states and 13969 transitions. [2021-11-25 20:17:54,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:17:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 10336 states and 13969 transitions. [2021-11-25 20:17:54,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-25 20:17:54,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:54,664 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:17:54,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:54,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:54,891 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:54,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1153848162, now seen corresponding path program 1 times [2021-11-25 20:17:54,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:54,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267085409] [2021-11-25 20:17:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:54,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 20:17:54,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:54,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267085409] [2021-11-25 20:17:54,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267085409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:54,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:17:54,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:17:54,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204096034] [2021-11-25 20:17:54,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:54,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:17:54,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:17:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:17:54,957 INFO L87 Difference]: Start difference. First operand 10336 states and 13969 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:17:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:56,278 INFO L93 Difference]: Finished difference Result 18018 states and 23459 transitions. [2021-11-25 20:17:56,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:17:56,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 116 [2021-11-25 20:17:56,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:56,308 INFO L225 Difference]: With dead ends: 18018 [2021-11-25 20:17:56,309 INFO L226 Difference]: Without dead ends: 13546 [2021-11-25 20:17:56,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:17:56,319 INFO L933 BasicCegarLoop]: 3221 mSDtfsCounter, 95 mSDsluCounter, 10136 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 12659 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:56,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 12659 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:17:56,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13546 states. [2021-11-25 20:17:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13546 to 13066. [2021-11-25 20:17:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13066 states, 10962 states have (on average 1.353311439518336) internal successors, (14835), 11020 states have internal predecessors, (14835), 1145 states have call successors, (1145), 949 states have call predecessors, (1145), 957 states have return successors, (1275), 1097 states have call predecessors, (1275), 1143 states have call successors, (1275) [2021-11-25 20:17:57,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13066 states to 13066 states and 17255 transitions. [2021-11-25 20:17:57,066 INFO L78 Accepts]: Start accepts. Automaton has 13066 states and 17255 transitions. Word has length 116 [2021-11-25 20:17:57,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:57,067 INFO L470 AbstractCegarLoop]: Abstraction has 13066 states and 17255 transitions. [2021-11-25 20:17:57,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:17:57,067 INFO L276 IsEmpty]: Start isEmpty. Operand 13066 states and 17255 transitions. [2021-11-25 20:17:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-25 20:17:57,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:57,080 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 20:17:57,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 20:17:57,080 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:57,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:57,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1268883313, now seen corresponding path program 1 times [2021-11-25 20:17:57,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:57,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784066132] [2021-11-25 20:17:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:57,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-25 20:17:57,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:57,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784066132] [2021-11-25 20:17:57,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784066132] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:57,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184214306] [2021-11-25 20:17:57,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:57,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:57,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:57,246 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:57,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 20:17:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:57,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 20:17:57,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:57,679 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:17:57,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:17:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-25 20:17:58,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184214306] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:17:58,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [208479767] [2021-11-25 20:17:58,151 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2021-11-25 20:17:58,152 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:17:58,157 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:17:58,162 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:17:58,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:18:09,382 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 75 for LOIs [2021-11-25 20:18:09,389 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 185 for LOIs [2021-11-25 20:18:55,590 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 147 for LOIs [2021-11-25 20:18:55,635 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 123 for LOIs [2021-11-25 20:18:55,658 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 71 for LOIs [2021-11-25 20:18:55,669 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 137 for LOIs [2021-11-25 20:18:55,810 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 125 for LOIs [2021-11-25 20:18:56,464 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:19:35,707 WARN L227 SmtUtils]: Spent 30.13s on a formula simplification. DAG size of input: 1255 DAG size of output: 848 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:19:50,751 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '388585#(and (= ~a15~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_pc~0 0) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (= |#NULL.base| 0))' at error location [2021-11-25 20:19:50,751 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:19:50,751 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:19:50,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 6] total 21 [2021-11-25 20:19:50,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682923045] [2021-11-25 20:19:50,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:19:50,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 20:19:50,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:50,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 20:19:50,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=4779, Unknown=0, NotChecked=0, Total=5256 [2021-11-25 20:19:50,755 INFO L87 Difference]: Start difference. First operand 13066 states and 17255 transitions. Second operand has 21 states, 17 states have (on average 9.0) internal successors, (153), 19 states have internal predecessors, (153), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2021-11-25 20:19:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:55,392 INFO L93 Difference]: Finished difference Result 25167 states and 32905 transitions. [2021-11-25 20:19:55,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-11-25 20:19:55,393 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 9.0) internal successors, (153), 19 states have internal predecessors, (153), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 121 [2021-11-25 20:19:55,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:55,420 INFO L225 Difference]: With dead ends: 25167 [2021-11-25 20:19:55,420 INFO L226 Difference]: Without dead ends: 13716 [2021-11-25 20:19:55,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 331 SyntacticMatches, 21 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10388 ImplicationChecksByTransitivity, 55.7s TimeCoverageRelationStatistics Valid=1580, Invalid=21070, Unknown=0, NotChecked=0, Total=22650 [2021-11-25 20:19:55,450 INFO L933 BasicCegarLoop]: 3416 mSDtfsCounter, 11606 mSDsluCounter, 32723 mSDsCounter, 0 mSdLazyCounter, 4906 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11612 SdHoareTripleChecker+Valid, 33734 SdHoareTripleChecker+Invalid, 5556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 4906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:55,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11612 Valid, 33734 Invalid, 5556 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [650 Valid, 4906 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 20:19:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13716 states. [2021-11-25 20:19:56,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13716 to 9720. [2021-11-25 20:19:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9720 states, 8302 states have (on average 1.3986991086485183) internal successors, (11612), 8327 states have internal predecessors, (11612), 748 states have call successors, (748), 666 states have call predecessors, (748), 668 states have return successors, (794), 726 states have call predecessors, (794), 746 states have call successors, (794) [2021-11-25 20:19:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9720 states to 9720 states and 13154 transitions. [2021-11-25 20:19:56,186 INFO L78 Accepts]: Start accepts. Automaton has 9720 states and 13154 transitions. Word has length 121 [2021-11-25 20:19:56,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:56,186 INFO L470 AbstractCegarLoop]: Abstraction has 9720 states and 13154 transitions. [2021-11-25 20:19:56,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 9.0) internal successors, (153), 19 states have internal predecessors, (153), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2021-11-25 20:19:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 9720 states and 13154 transitions. [2021-11-25 20:19:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-25 20:19:56,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:56,195 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:56,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 20:19:56,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:19:56,423 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:56,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:56,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1463563530, now seen corresponding path program 1 times [2021-11-25 20:19:56,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:56,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027722566] [2021-11-25 20:19:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:56,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 41 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-25 20:19:56,508 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:56,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027722566] [2021-11-25 20:19:56,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027722566] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:19:56,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699165072] [2021-11-25 20:19:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:56,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:19:56,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:19:56,510 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:19:56,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-25 20:19:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:56,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 20:19:56,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:19:56,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:19:56,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699165072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:56,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:19:56,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2021-11-25 20:19:56,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625829059] [2021-11-25 20:19:56,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:56,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:19:56,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:19:56,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:19:56,817 INFO L87 Difference]: Start difference. First operand 9720 states and 13154 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-25 20:19:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:57,923 INFO L93 Difference]: Finished difference Result 16949 states and 22056 transitions. [2021-11-25 20:19:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:19:57,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 117 [2021-11-25 20:19:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:57,944 INFO L225 Difference]: With dead ends: 16949 [2021-11-25 20:19:57,945 INFO L226 Difference]: Without dead ends: 11638 [2021-11-25 20:19:57,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:19:57,953 INFO L933 BasicCegarLoop]: 3225 mSDtfsCounter, 216 mSDsluCounter, 13409 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 15725 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:57,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 15725 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:19:57,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11638 states. [2021-11-25 20:19:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11638 to 10635. [2021-11-25 20:19:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10635 states, 9008 states have (on average 1.3769982238010656) internal successors, (12404), 9047 states have internal predecessors, (12404), 862 states have call successors, (862), 753 states have call predecessors, (862), 763 states have return successors, (964), 834 states have call predecessors, (964), 860 states have call successors, (964) [2021-11-25 20:19:58,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10635 states to 10635 states and 14230 transitions. [2021-11-25 20:19:58,439 INFO L78 Accepts]: Start accepts. Automaton has 10635 states and 14230 transitions. Word has length 117 [2021-11-25 20:19:58,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:58,439 INFO L470 AbstractCegarLoop]: Abstraction has 10635 states and 14230 transitions. [2021-11-25 20:19:58,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-25 20:19:58,439 INFO L276 IsEmpty]: Start isEmpty. Operand 10635 states and 14230 transitions. [2021-11-25 20:19:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-25 20:19:58,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:58,447 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 20:19:58,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-25 20:19:58,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-25 20:19:58,675 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:58,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:58,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1145355123, now seen corresponding path program 1 times [2021-11-25 20:19:58,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:58,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669951155] [2021-11-25 20:19:58,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:58,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-25 20:19:58,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:58,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669951155] [2021-11-25 20:19:58,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669951155] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:19:58,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215689204] [2021-11-25 20:19:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:58,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:19:58,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:19:58,777 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:19:58,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-25 20:19:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:58,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 20:19:58,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:59,240 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:19:59,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:19:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-25 20:19:59,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215689204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:19:59,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [711956476] [2021-11-25 20:19:59,631 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2021-11-25 20:19:59,632 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:19:59,632 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:19:59,633 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:19:59,633 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:20:08,749 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 76 for LOIs [2021-11-25 20:20:08,757 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 185 for LOIs [2021-11-25 20:20:16,359 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 147 for LOIs [2021-11-25 20:20:16,402 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 123 for LOIs [2021-11-25 20:20:16,425 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 123 for LOIs [2021-11-25 20:20:16,457 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 132 for LOIs [2021-11-25 20:20:16,674 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 120 for LOIs [2021-11-25 20:20:17,005 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:20:27,571 WARN L227 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 409 DAG size of output: 278 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:20:43,066 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '472956#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2021-11-25 20:20:43,066 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:20:43,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:20:43,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2021-11-25 20:20:43,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087832203] [2021-11-25 20:20:43,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:20:43,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 20:20:43,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:43,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 20:20:43,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=4665, Unknown=0, NotChecked=0, Total=5112 [2021-11-25 20:20:43,070 INFO L87 Difference]: Start difference. First operand 10635 states and 14230 transitions. Second operand has 17 states, 14 states have (on average 9.642857142857142) internal successors, (135), 15 states have internal predecessors, (135), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-25 20:20:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:50,454 INFO L93 Difference]: Finished difference Result 23688 states and 31652 transitions. [2021-11-25 20:20:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-11-25 20:20:50,454 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 9.642857142857142) internal successors, (135), 15 states have internal predecessors, (135), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 124 [2021-11-25 20:20:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:50,480 INFO L225 Difference]: With dead ends: 23688 [2021-11-25 20:20:50,480 INFO L226 Difference]: Without dead ends: 15597 [2021-11-25 20:20:50,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 397 SyntacticMatches, 15 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28022 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=4561, Invalid=57689, Unknown=0, NotChecked=0, Total=62250 [2021-11-25 20:20:50,504 INFO L933 BasicCegarLoop]: 3725 mSDtfsCounter, 18665 mSDsluCounter, 31823 mSDsCounter, 0 mSdLazyCounter, 5660 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18674 SdHoareTripleChecker+Valid, 33067 SdHoareTripleChecker+Invalid, 6674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 5660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:50,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18674 Valid, 33067 Invalid, 6674 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1014 Valid, 5660 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-25 20:20:50,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15597 states. [2021-11-25 20:20:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15597 to 8079. [2021-11-25 20:20:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8079 states, 6978 states have (on average 1.420464316423044) internal successors, (9912), 6995 states have internal predecessors, (9912), 566 states have call successors, (566), 529 states have call predecessors, (566), 533 states have return successors, (628), 554 states have call predecessors, (628), 564 states have call successors, (628) [2021-11-25 20:20:51,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 11106 transitions. [2021-11-25 20:20:51,065 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 11106 transitions. Word has length 124 [2021-11-25 20:20:51,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:51,065 INFO L470 AbstractCegarLoop]: Abstraction has 8079 states and 11106 transitions. [2021-11-25 20:20:51,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 9.642857142857142) internal successors, (135), 15 states have internal predecessors, (135), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-25 20:20:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 11106 transitions. [2021-11-25 20:20:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-25 20:20:51,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:51,070 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 20:20:51,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-25 20:20:51,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-25 20:20:51,295 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:20:51,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:51,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1981249909, now seen corresponding path program 1 times [2021-11-25 20:20:51,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:51,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021961750] [2021-11-25 20:20:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:51,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-25 20:20:51,373 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:51,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021961750] [2021-11-25 20:20:51,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021961750] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:20:51,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779035716] [2021-11-25 20:20:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:51,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:20:51,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:20:51,378 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:20:51,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 20:20:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:51,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 20:20:51,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:20:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:20:51,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:20:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-25 20:20:52,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779035716] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:20:52,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1069516169] [2021-11-25 20:20:52,200 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2021-11-25 20:20:52,201 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:20:52,201 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:20:52,201 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:20:52,201 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:20:59,192 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 77 for LOIs [2021-11-25 20:20:59,198 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 185 for LOIs [2021-11-25 20:21:10,329 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 147 for LOIs [2021-11-25 20:21:10,372 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 123 for LOIs [2021-11-25 20:21:10,395 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 73 for LOIs [2021-11-25 20:21:10,407 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 85 for LOIs [2021-11-25 20:21:10,515 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 123 for LOIs [2021-11-25 20:21:10,963 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:21:26,001 WARN L227 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 495 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:21:40,032 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '516572#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (<= ~t2_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2021-11-25 20:21:40,032 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:21:40,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:21:40,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 6] total 18 [2021-11-25 20:21:40,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732896044] [2021-11-25 20:21:40,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:21:40,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 20:21:40,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:40,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 20:21:40,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=492, Invalid=5208, Unknown=0, NotChecked=0, Total=5700 [2021-11-25 20:21:40,034 INFO L87 Difference]: Start difference. First operand 8079 states and 11106 transitions. Second operand has 18 states, 15 states have (on average 9.266666666666667) internal successors, (139), 16 states have internal predecessors, (139), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-25 20:21:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:46,584 INFO L93 Difference]: Finished difference Result 15486 states and 20650 transitions. [2021-11-25 20:21:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2021-11-25 20:21:46,584 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 9.266666666666667) internal successors, (139), 16 states have internal predecessors, (139), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 126 [2021-11-25 20:21:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:46,600 INFO L225 Difference]: With dead ends: 15486 [2021-11-25 20:21:46,600 INFO L226 Difference]: Without dead ends: 10199 [2021-11-25 20:21:46,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 376 SyntacticMatches, 14 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25077 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=3993, Invalid=51939, Unknown=0, NotChecked=0, Total=55932 [2021-11-25 20:21:46,615 INFO L933 BasicCegarLoop]: 3641 mSDtfsCounter, 11505 mSDsluCounter, 31644 mSDsCounter, 0 mSdLazyCounter, 6031 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11513 SdHoareTripleChecker+Valid, 32835 SdHoareTripleChecker+Invalid, 6658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 6031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:46,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11513 Valid, 32835 Invalid, 6658 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [627 Valid, 6031 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-25 20:21:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10199 states. [2021-11-25 20:21:46,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10199 to 6838. [2021-11-25 20:21:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6838 states, 5955 states have (on average 1.4408060453400504) internal successors, (8580), 5970 states have internal predecessors, (8580), 447 states have call successors, (447), 428 states have call predecessors, (447), 434 states have return successors, (503), 439 states have call predecessors, (503), 445 states have call successors, (503) [2021-11-25 20:21:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 9530 transitions. [2021-11-25 20:21:47,002 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 9530 transitions. Word has length 126 [2021-11-25 20:21:47,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:47,003 INFO L470 AbstractCegarLoop]: Abstraction has 6838 states and 9530 transitions. [2021-11-25 20:21:47,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 9.266666666666667) internal successors, (139), 16 states have internal predecessors, (139), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-25 20:21:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 9530 transitions. [2021-11-25 20:21:47,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-25 20:21:47,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:47,007 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 20:21:47,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-25 20:21:47,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-25 20:21:47,207 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:47,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:47,208 INFO L85 PathProgramCache]: Analyzing trace with hash -901476391, now seen corresponding path program 1 times [2021-11-25 20:21:47,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:47,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578633431] [2021-11-25 20:21:47,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:47,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 23 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:21:47,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:47,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578633431] [2021-11-25 20:21:47,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578633431] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:21:47,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300120238] [2021-11-25 20:21:47,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:47,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:47,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:47,467 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:47,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-25 20:21:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:47,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 20:21:47,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:21:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 20:21:48,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:21:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-25 20:21:48,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300120238] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:21:48,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2038019415] [2021-11-25 20:21:48,874 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2021-11-25 20:21:48,874 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:21:48,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:21:48,875 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:21:48,875 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:22:06,020 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 78 for LOIs [2021-11-25 20:22:06,029 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 127 for LOIs [2021-11-25 20:22:06,076 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 240 for LOIs [2021-11-25 20:22:15,155 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 208 for LOIs [2021-11-25 20:22:15,218 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 123 for LOIs [2021-11-25 20:22:15,249 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 132 for LOIs [2021-11-25 20:22:15,556 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 121 for LOIs [2021-11-25 20:22:16,113 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:22:39,531 WARN L227 SmtUtils]: Spent 21.28s on a formula simplification. DAG size of input: 493 DAG size of output: 443 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:23:04,891 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '546879#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (<= ~t2_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (<= ~t3_pc~0 1) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (<= 0 ~t3_pc~0) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2021-11-25 20:23:04,891 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:23:04,891 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:23:04,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 36 [2021-11-25 20:23:04,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008835895] [2021-11-25 20:23:04,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:23:04,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-25 20:23:04,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:04,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-25 20:23:04,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=8825, Unknown=0, NotChecked=0, Total=9506 [2021-11-25 20:23:04,894 INFO L87 Difference]: Start difference. First operand 6838 states and 9530 transitions. Second operand has 36 states, 24 states have (on average 8.416666666666666) internal successors, (202), 27 states have internal predecessors, (202), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2021-11-25 20:23:11,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:11,802 INFO L93 Difference]: Finished difference Result 15022 states and 19729 transitions. [2021-11-25 20:23:11,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-25 20:23:11,803 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 24 states have (on average 8.416666666666666) internal successors, (202), 27 states have internal predecessors, (202), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) Word has length 128 [2021-11-25 20:23:11,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:11,816 INFO L225 Difference]: With dead ends: 15022 [2021-11-25 20:23:11,817 INFO L226 Difference]: Without dead ends: 10709 [2021-11-25 20:23:11,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 310 SyntacticMatches, 16 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10405 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=2351, Invalid=22455, Unknown=0, NotChecked=0, Total=24806 [2021-11-25 20:23:11,825 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 30536 mSDsluCounter, 40399 mSDsCounter, 0 mSdLazyCounter, 6427 mSolverCounterSat, 2267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30536 SdHoareTripleChecker+Valid, 40837 SdHoareTripleChecker+Invalid, 8694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2267 IncrementalHoareTripleChecker+Valid, 6427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:11,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30536 Valid, 40837 Invalid, 8694 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2267 Valid, 6427 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-25 20:23:11,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10709 states. [2021-11-25 20:23:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10709 to 6549. [2021-11-25 20:23:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6549 states, 5717 states have (on average 1.4483120517754067) internal successors, (8280), 5730 states have internal predecessors, (8280), 427 states have call successors, (427), 404 states have call predecessors, (427), 403 states have return successors, (425), 414 states have call predecessors, (425), 425 states have call successors, (425) [2021-11-25 20:23:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6549 states to 6549 states and 9132 transitions. [2021-11-25 20:23:12,217 INFO L78 Accepts]: Start accepts. Automaton has 6549 states and 9132 transitions. Word has length 128 [2021-11-25 20:23:12,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:12,217 INFO L470 AbstractCegarLoop]: Abstraction has 6549 states and 9132 transitions. [2021-11-25 20:23:12,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 24 states have (on average 8.416666666666666) internal successors, (202), 27 states have internal predecessors, (202), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2021-11-25 20:23:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 6549 states and 9132 transitions. [2021-11-25 20:23:12,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-25 20:23:12,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:12,221 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:23:12,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-25 20:23:12,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:12,422 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:12,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1362233681, now seen corresponding path program 1 times [2021-11-25 20:23:12,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:12,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483821382] [2021-11-25 20:23:12,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:12,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 31 proven. 19 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-25 20:23:12,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:12,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483821382] [2021-11-25 20:23:12,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483821382] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:23:12,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198432579] [2021-11-25 20:23:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:12,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:12,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:23:12,491 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:23:12,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-25 20:23:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:12,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:23:12,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:23:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-25 20:23:12,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:23:12,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198432579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:12,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:23:12,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2021-11-25 20:23:12,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223089740] [2021-11-25 20:23:12,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:12,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:23:12,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:12,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:23:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:23:12,830 INFO L87 Difference]: Start difference. First operand 6549 states and 9132 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:23:13,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:13,384 INFO L93 Difference]: Finished difference Result 11165 states and 14746 transitions. [2021-11-25 20:23:13,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:23:13,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 142 [2021-11-25 20:23:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:13,394 INFO L225 Difference]: With dead ends: 11165 [2021-11-25 20:23:13,394 INFO L226 Difference]: Without dead ends: 6837 [2021-11-25 20:23:13,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:23:13,400 INFO L933 BasicCegarLoop]: 3182 mSDtfsCounter, 3353 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:13,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3353 Valid, 3211 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:23:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6837 states. [2021-11-25 20:23:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6837 to 6655. [2021-11-25 20:23:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6655 states, 5817 states have (on average 1.4321815368746778) internal successors, (8331), 5830 states have internal predecessors, (8331), 427 states have call successors, (427), 410 states have call predecessors, (427), 409 states have return successors, (435), 414 states have call predecessors, (435), 425 states have call successors, (435) [2021-11-25 20:23:13,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6655 states to 6655 states and 9193 transitions. [2021-11-25 20:23:13,773 INFO L78 Accepts]: Start accepts. Automaton has 6655 states and 9193 transitions. Word has length 142 [2021-11-25 20:23:13,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:13,774 INFO L470 AbstractCegarLoop]: Abstraction has 6655 states and 9193 transitions. [2021-11-25 20:23:13,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:23:13,774 INFO L276 IsEmpty]: Start isEmpty. Operand 6655 states and 9193 transitions. [2021-11-25 20:23:13,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-25 20:23:13,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:13,778 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:23:13,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-25 20:23:13,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-25 20:23:13,995 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:13,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:13,995 INFO L85 PathProgramCache]: Analyzing trace with hash 501019122, now seen corresponding path program 1 times [2021-11-25 20:23:13,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:13,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644137059] [2021-11-25 20:23:13,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:13,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-25 20:23:14,073 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:14,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644137059] [2021-11-25 20:23:14,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644137059] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:23:14,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797936724] [2021-11-25 20:23:14,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:14,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:14,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:23:14,075 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:23:14,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-25 20:23:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:14,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:23:14,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:23:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-25 20:23:14,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:23:14,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797936724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:14,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:23:14,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-25 20:23:14,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129022859] [2021-11-25 20:23:14,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:14,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:23:14,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:14,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:23:14,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:23:14,429 INFO L87 Difference]: Start difference. First operand 6655 states and 9193 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:23:15,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:15,034 INFO L93 Difference]: Finished difference Result 10847 states and 14327 transitions. [2021-11-25 20:23:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:23:15,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 142 [2021-11-25 20:23:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:15,043 INFO L225 Difference]: With dead ends: 10847 [2021-11-25 20:23:15,043 INFO L226 Difference]: Without dead ends: 6410 [2021-11-25 20:23:15,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:23:15,051 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 93 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 6329 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:15,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 6329 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:23:15,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6410 states. [2021-11-25 20:23:15,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6410 to 6334. [2021-11-25 20:23:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6334 states, 5534 states have (on average 1.4110950487893026) internal successors, (7809), 5547 states have internal predecessors, (7809), 408 states have call successors, (408), 391 states have call predecessors, (408), 390 states have return successors, (416), 395 states have call predecessors, (416), 406 states have call successors, (416) [2021-11-25 20:23:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6334 states to 6334 states and 8633 transitions. [2021-11-25 20:23:15,548 INFO L78 Accepts]: Start accepts. Automaton has 6334 states and 8633 transitions. Word has length 142 [2021-11-25 20:23:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:15,549 INFO L470 AbstractCegarLoop]: Abstraction has 6334 states and 8633 transitions. [2021-11-25 20:23:15,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:23:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 6334 states and 8633 transitions. [2021-11-25 20:23:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-25 20:23:15,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:15,553 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:23:15,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-25 20:23:15,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-25 20:23:15,779 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:15,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:15,779 INFO L85 PathProgramCache]: Analyzing trace with hash -259750439, now seen corresponding path program 1 times [2021-11-25 20:23:15,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:15,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921950600] [2021-11-25 20:23:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:15,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-25 20:23:15,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:15,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921950600] [2021-11-25 20:23:15,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921950600] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:23:15,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648385690] [2021-11-25 20:23:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:15,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:15,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:23:15,863 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:23:15,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-25 20:23:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:16,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 20:23:16,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:23:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 20:23:16,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:23:16,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648385690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:16,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:23:16,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2021-11-25 20:23:16,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535189948] [2021-11-25 20:23:16,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:16,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:23:16,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:16,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:23:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:23:16,215 INFO L87 Difference]: Start difference. First operand 6334 states and 8633 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-25 20:23:17,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:17,220 INFO L93 Difference]: Finished difference Result 11273 states and 14321 transitions. [2021-11-25 20:23:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:23:17,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 145 [2021-11-25 20:23:17,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:17,231 INFO L225 Difference]: With dead ends: 11273 [2021-11-25 20:23:17,231 INFO L226 Difference]: Without dead ends: 7253 [2021-11-25 20:23:17,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:23:17,236 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 232 mSDsluCounter, 10029 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 12569 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:17,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 12569 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:23:17,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7253 states. [2021-11-25 20:23:17,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 6800. [2021-11-25 20:23:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6800 states, 5874 states have (on average 1.3859380320054477) internal successors, (8141), 5894 states have internal predecessors, (8141), 474 states have call successors, (474), 441 states have call predecessors, (474), 450 states have return successors, (522), 464 states have call predecessors, (522), 472 states have call successors, (522) [2021-11-25 20:23:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 9137 transitions. [2021-11-25 20:23:17,622 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 9137 transitions. Word has length 145 [2021-11-25 20:23:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:17,622 INFO L470 AbstractCegarLoop]: Abstraction has 6800 states and 9137 transitions. [2021-11-25 20:23:17,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-25 20:23:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 9137 transitions. [2021-11-25 20:23:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-25 20:23:17,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:17,625 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 20:23:17,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-25 20:23:17,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:17,826 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:17,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:17,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1515287720, now seen corresponding path program 1 times [2021-11-25 20:23:17,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:17,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703846586] [2021-11-25 20:23:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:17,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-25 20:23:17,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:17,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703846586] [2021-11-25 20:23:17,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703846586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:17,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:23:17,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:23:17,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995211133] [2021-11-25 20:23:17,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:17,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:23:17,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:17,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:23:17,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:23:17,939 INFO L87 Difference]: Start difference. First operand 6800 states and 9137 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-25 20:23:19,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:19,885 INFO L93 Difference]: Finished difference Result 19033 states and 23159 transitions. [2021-11-25 20:23:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:23:19,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 174 [2021-11-25 20:23:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:19,921 INFO L225 Difference]: With dead ends: 19033 [2021-11-25 20:23:19,921 INFO L226 Difference]: Without dead ends: 16437 [2021-11-25 20:23:19,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:23:19,932 INFO L933 BasicCegarLoop]: 3413 mSDtfsCounter, 3643 mSDsluCounter, 10759 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3643 SdHoareTripleChecker+Valid, 13362 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:19,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3643 Valid, 13362 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:23:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16437 states. [2021-11-25 20:23:20,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16437 to 10769. [2021-11-25 20:23:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10769 states, 9079 states have (on average 1.301354774754929) internal successors, (11815), 9109 states have internal predecessors, (11815), 875 states have call successors, (875), 795 states have call predecessors, (875), 813 states have return successors, (975), 864 states have call predecessors, (975), 873 states have call successors, (975) [2021-11-25 20:23:20,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10769 states to 10769 states and 13665 transitions. [2021-11-25 20:23:20,900 INFO L78 Accepts]: Start accepts. Automaton has 10769 states and 13665 transitions. Word has length 174 [2021-11-25 20:23:20,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:20,900 INFO L470 AbstractCegarLoop]: Abstraction has 10769 states and 13665 transitions. [2021-11-25 20:23:20,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-25 20:23:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 10769 states and 13665 transitions. [2021-11-25 20:23:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-25 20:23:20,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:20,907 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 20:23:20,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 20:23:20,908 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:20,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:20,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1270651320, now seen corresponding path program 1 times [2021-11-25 20:23:20,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:20,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139026629] [2021-11-25 20:23:20,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:20,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:23:20,941 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:23:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:23:21,072 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:23:21,073 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:23:21,074 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 20:23:21,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 20:23:21,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 20:23:21,079 INFO L732 BasicCegarLoop]: Path program 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] [2021-11-25 20:23:21,083 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:23:21,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:23:21 BoogieIcfgContainer [2021-11-25 20:23:21,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:23:21,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:23:21,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:23:21,298 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:23:21,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:17:23" (3/4) ... [2021-11-25 20:23:21,300 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 20:23:21,528 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 20:23:21,529 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:23:21,530 INFO L158 Benchmark]: Toolchain (without parser) took 373071.36ms. Allocated memory was 102.8MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 53.9MB in the beginning and 2.7GB in the end (delta: -2.7GB). Peak memory consumption was 481.5MB. Max. memory is 16.1GB. [2021-11-25 20:23:21,530 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:23:21,533 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4142.72ms. Allocated memory was 102.8MB in the beginning and 264.2MB in the end (delta: 161.5MB). Free memory was 53.6MB in the beginning and 167.0MB in the end (delta: -113.5MB). Peak memory consumption was 112.5MB. Max. memory is 16.1GB. [2021-11-25 20:23:21,533 INFO L158 Benchmark]: Boogie Procedure Inliner took 540.22ms. Allocated memory is still 264.2MB. Free memory was 167.0MB in the beginning and 133.5MB in the end (delta: 33.5MB). Peak memory consumption was 106.9MB. Max. memory is 16.1GB. [2021-11-25 20:23:21,533 INFO L158 Benchmark]: Boogie Preprocessor took 476.33ms. Allocated memory was 264.2MB in the beginning and 528.5MB in the end (delta: 264.2MB). Free memory was 133.5MB in the beginning and 370.5MB in the end (delta: -236.9MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2021-11-25 20:23:21,534 INFO L158 Benchmark]: RCFGBuilder took 9700.98ms. Allocated memory was 528.5MB in the beginning and 828.4MB in the end (delta: 299.9MB). Free memory was 370.5MB in the beginning and 215.2MB in the end (delta: 155.3MB). Peak memory consumption was 457.2MB. Max. memory is 16.1GB. [2021-11-25 20:23:21,534 INFO L158 Benchmark]: TraceAbstraction took 357972.79ms. Allocated memory was 828.4MB in the beginning and 3.2GB in the end (delta: 2.4GB). Free memory was 214.1MB in the beginning and 2.8GB in the end (delta: -2.5GB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:23:21,534 INFO L158 Benchmark]: Witness Printer took 231.22ms. Allocated memory is still 3.2GB. Free memory was 2.8GB in the beginning and 2.7GB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-25 20:23:21,535 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4142.72ms. Allocated memory was 102.8MB in the beginning and 264.2MB in the end (delta: 161.5MB). Free memory was 53.6MB in the beginning and 167.0MB in the end (delta: -113.5MB). Peak memory consumption was 112.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 540.22ms. Allocated memory is still 264.2MB. Free memory was 167.0MB in the beginning and 133.5MB in the end (delta: 33.5MB). Peak memory consumption was 106.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 476.33ms. Allocated memory was 264.2MB in the beginning and 528.5MB in the end (delta: 264.2MB). Free memory was 133.5MB in the beginning and 370.5MB in the end (delta: -236.9MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. * RCFGBuilder took 9700.98ms. Allocated memory was 528.5MB in the beginning and 828.4MB in the end (delta: 299.9MB). Free memory was 370.5MB in the beginning and 215.2MB in the end (delta: 155.3MB). Peak memory consumption was 457.2MB. Max. memory is 16.1GB. * TraceAbstraction took 357972.79ms. Allocated memory was 828.4MB in the beginning and 3.2GB in the end (delta: 2.4GB). Free memory was 214.1MB in the beginning and 2.8GB in the end (delta: -2.5GB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 231.22ms. Allocated memory is still 3.2GB. Free memory was 2.8GB in the beginning and 2.7GB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int t2_pc = 0; [L11180] int t3_pc = 0; [L11181] int m_st ; [L11182] int t1_st ; [L11183] int t2_st ; [L11184] int t3_st ; [L11185] int m_i ; [L11186] int t1_i ; [L11187] int t2_i ; [L11188] int t3_i ; [L11189] int M_E = 2; [L11190] int T1_E = 2; [L11191] int T2_E = 2; [L11192] int T3_E = 2; [L11193] int E_M = 2; [L11194] int E_1 = 2; [L11195] int E_2 = 2; [L11196] int E_3 = 2; [L11202] int token ; [L11204] int local ; [L11901] COND FALSE !(__VERIFIER_nondet_int()) [L11904] CALL main2() [L11888] int __retres1 ; [L11892] CALL init_model() [L11801] m_i = 1 [L11802] t1_i = 1 [L11803] t2_i = 1 [L11804] t3_i = 1 [L11892] RET init_model() [L11893] CALL start_simulation() [L11829] int kernel_st ; [L11830] int tmp ; [L11831] int tmp___0 ; [L11835] kernel_st = 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11836] FCALL update_channels() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11837] CALL init_threads() [L11457] COND TRUE m_i == 1 [L11458] m_st = 0 [L11462] COND TRUE t1_i == 1 [L11463] t1_st = 0 [L11467] COND TRUE t2_i == 1 [L11468] t2_st = 0 [L11472] COND TRUE t3_i == 1 [L11473] t3_st = 0 [L11837] RET init_threads() [L11838] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11594] COND FALSE !(M_E == 0) [L11599] COND FALSE !(T1_E == 0) [L11604] COND FALSE !(T2_E == 0) [L11609] COND FALSE !(T3_E == 0) [L11614] COND FALSE !(E_M == 0) [L11619] COND FALSE !(E_1 == 0) [L11624] COND FALSE !(E_2 == 0) [L11629] COND FALSE !(E_3 == 0) [L11838] RET fire_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11839] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11373] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11383] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11392] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11402] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11411] COND FALSE !(t2_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11421] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11430] COND FALSE !(t3_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11440] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11839] RET activate_threads() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11840] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11642] COND FALSE !(M_E == 1) [L11647] COND FALSE !(T1_E == 1) [L11652] COND FALSE !(T2_E == 1) [L11657] COND FALSE !(T3_E == 1) [L11662] COND FALSE !(E_M == 1) [L11667] COND FALSE !(E_1 == 1) [L11672] COND FALSE !(E_2 == 1) [L11677] COND FALSE !(E_3 == 1) [L11840] RET reset_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11843] COND TRUE 1 [L11846] kernel_st = 1 [L11847] CALL eval() [L11513] int tmp ; VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11517] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11520] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11482] int __retres1 ; [L11485] COND TRUE m_st == 0 [L11486] __retres1 = 1 [L11508] return (__retres1); [L11520] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11520] tmp = exists_runnable_thread() [L11522] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, tmp=1, token=0] [L11527] COND TRUE m_st == 0 [L11528] int tmp_ndt_1; [L11529] tmp_ndt_1 = __VERIFIER_nondet_int() [L11530] COND FALSE !(\read(tmp_ndt_1)) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, tmp=1, tmp_ndt_1=0, token=0] [L11541] COND TRUE t1_st == 0 [L11542] int tmp_ndt_2; [L11543] tmp_ndt_2 = __VERIFIER_nondet_int() [L11544] COND TRUE \read(tmp_ndt_2) [L11546] t1_st = 1 [L11547] CALL transmit1() [L11265] COND TRUE t1_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11276] COND TRUE 1 [L11278] t1_pc = 1 [L11279] t1_st = 2 [L11547] RET transmit1() [L11555] COND TRUE t2_st == 0 [L11556] int tmp_ndt_3; [L11557] tmp_ndt_3 = __VERIFIER_nondet_int() [L11558] COND TRUE \read(tmp_ndt_3) [L11560] t2_st = 1 [L11561] CALL transmit2() [L11301] COND TRUE t2_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11312] COND TRUE 1 [L11314] t2_pc = 1 [L11315] t2_st = 2 [L11561] RET transmit2() [L11569] COND TRUE t3_st == 0 [L11570] int tmp_ndt_4; [L11571] tmp_ndt_4 = __VERIFIER_nondet_int() [L11572] COND TRUE \read(tmp_ndt_4) [L11574] t3_st = 1 [L11575] CALL transmit3() [L11337] COND TRUE t3_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=0, t3_st=1, token=0] [L11348] COND TRUE 1 [L11350] t3_pc = 1 [L11351] t3_st = 2 [L11575] RET transmit3() [L11517] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, tmp_ndt_4=1, token=0] [L11520] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11482] int __retres1 ; [L11485] COND TRUE m_st == 0 [L11486] __retres1 = 1 [L11508] return (__retres1); [L11520] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, tmp_ndt_4=1, token=0] [L11520] tmp = exists_runnable_thread() [L11522] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, tmp_ndt_4=1, token=0] [L11527] COND TRUE m_st == 0 [L11528] int tmp_ndt_1; [L11529] tmp_ndt_1 = __VERIFIER_nondet_int() [L11530] COND TRUE \read(tmp_ndt_1) [L11532] m_st = 1 [L11533] CALL master() [L11207] int tmp_var = __VERIFIER_nondet_int(); [L11209] COND TRUE m_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11220] COND TRUE 1 [L11223] token = __VERIFIER_nondet_int() [L11224] local = token [L11225] E_1 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11226] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11734] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11373] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11383] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11393] COND TRUE E_1 == 1 [L11394] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND TRUE \read(tmp___0) [L11705] t1_st = 0 [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11412] COND FALSE !(E_2 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11421] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11431] COND FALSE !(E_3 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11440] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11734] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11226] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11227] E_1 = 2 [L11228] m_pc = 1 [L11229] m_st = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11533] RET master() [L11541] COND TRUE t1_st == 0 [L11542] int tmp_ndt_2; [L11543] tmp_ndt_2 = __VERIFIER_nondet_int() [L11544] COND TRUE \read(tmp_ndt_2) [L11546] t1_st = 1 [L11547] CALL transmit1() [L11265] COND FALSE !(t1_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11268] COND TRUE t1_pc == 1 [L11284] token += 1 [L11285] E_2 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11286] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11734] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11373] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11374] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11383] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11393] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11402] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11412] COND TRUE E_2 == 1 [L11413] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND TRUE \read(tmp___1) [L11713] t2_st = 0 [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11431] COND FALSE !(E_3 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11440] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11734] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11286] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11287] E_2 = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11276] COND TRUE 1 [L11278] t1_pc = 1 [L11279] t1_st = 2 [L11547] RET transmit1() [L11555] COND TRUE t2_st == 0 [L11556] int tmp_ndt_3; [L11557] tmp_ndt_3 = __VERIFIER_nondet_int() [L11558] COND TRUE \read(tmp_ndt_3) [L11560] t2_st = 1 [L11561] CALL transmit2() [L11301] COND FALSE !(t2_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11304] COND TRUE t2_pc == 1 [L11320] token += 1 [L11321] E_3 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11322] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11734] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11373] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11374] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11383] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11393] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11402] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11412] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11421] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11431] COND TRUE E_3 == 1 [L11432] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND TRUE \read(tmp___2) [L11721] t3_st = 0 [L11734] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L11322] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L11323] E_3 = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L11312] COND TRUE 1 [L11314] t2_pc = 1 [L11315] t2_st = 2 [L11561] RET transmit2() [L11569] COND TRUE t3_st == 0 [L11570] int tmp_ndt_4; [L11571] tmp_ndt_4 = __VERIFIER_nondet_int() [L11572] COND TRUE \read(tmp_ndt_4) [L11574] t3_st = 1 [L11575] CALL transmit3() [L11337] COND FALSE !(t3_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=2] [L11340] COND TRUE t3_pc == 1 [L11356] token += 1 [L11357] E_M = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11358] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11734] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11373] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11374] COND TRUE E_M == 1 [L11375] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND TRUE \read(tmp) [L11697] m_st = 0 [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11393] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11402] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11412] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11421] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11431] COND FALSE !(E_3 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11440] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11734] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11358] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11359] E_M = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11348] COND TRUE 1 [L11350] t3_pc = 1 [L11351] t3_st = 2 [L11575] RET transmit3() [L11517] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=-2, tmp_ndt_2=-3, tmp_ndt_3=1, tmp_ndt_4=1, token=3] [L11520] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L11482] int __retres1 ; [L11485] COND TRUE m_st == 0 [L11486] __retres1 = 1 [L11508] return (__retres1); [L11520] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=-2, tmp_ndt_2=-3, tmp_ndt_3=1, tmp_ndt_4=1, token=3] [L11520] tmp = exists_runnable_thread() [L11522] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=-2, tmp_ndt_2=-3, tmp_ndt_3=1, tmp_ndt_4=1, token=3] [L11527] COND TRUE m_st == 0 [L11528] int tmp_ndt_1; [L11529] tmp_ndt_1 = __VERIFIER_nondet_int() [L11530] COND TRUE \read(tmp_ndt_1) [L11532] m_st = 1 [L11533] CALL master() [L11207] int tmp_var = __VERIFIER_nondet_int(); [L11209] COND FALSE !(m_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11212] COND TRUE m_pc == 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11234] COND FALSE !(token != local + 3) [L11239] COND TRUE tmp_var <= 5 [L11240] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11245] COND TRUE tmp_var <= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11246] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11247] COND TRUE tmp_var == 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11248] CALL error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L11173] reach_error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] - UnprovableResult [Line: 11094]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1738 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 357.7s, OverallIterations: 30, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 46.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118402 SdHoareTripleChecker+Valid, 23.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118308 mSDsluCounter, 322482 SdHoareTripleChecker+Invalid, 19.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 245828 mSDsCounter, 5115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38083 IncrementalHoareTripleChecker+Invalid, 43198 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5115 mSolverCounterUnsat, 94334 mSDtfsCounter, 38083 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4820 GetRequests, 3841 SyntacticMatches, 66 SemanticMatches, 913 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73945 ImplicationChecksByTransitivity, 169.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13066occurred in iteration=20, InterpolantAutomatonStates: 625, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.4s AutomataMinimizationTime, 29 MinimizatonAttempts, 30320 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 6193 NumberOfCodeBlocks, 6193 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 6572 ConstructedInterpolants, 0 QuantifiedInterpolants, 12185 SizeOfPredicates, 41 NumberOfNonLiveVariables, 14196 ConjunctsInSsa, 218 ConjunctsInUnsatCore, 58 InterpolantComputations, 25 PerfectInterpolantSequences, 3851/4359 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-25 20:23:21,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b8d8a8-7530-4339-8c84-f1440c8e9b48/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE