./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix038.opt.i --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_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/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_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix038.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/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_b6ce571f-fa42-410e-a946-377b2b299a16/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 8aba011b4454b6464ed30c6424ccbb7bc43e89a3e2bf826373810de7cb8fe97a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:28:29,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:28:29,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:28:29,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:28:29,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:28:29,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:28:29,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:28:29,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:28:29,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:28:29,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:28:29,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:28:29,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:28:29,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:28:29,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:28:29,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:28:29,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:28:29,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:28:29,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:28:29,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:28:29,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:28:29,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:28:29,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:28:29,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:28:29,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:28:29,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:28:29,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:28:29,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:28:29,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:28:29,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:28:29,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:28:29,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:28:29,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:28:29,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:28:29,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:28:29,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:28:29,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:28:29,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:28:29,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:28:29,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:28:29,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:28:29,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:28:29,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:28:29,771 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:28:29,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:28:29,772 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:28:29,772 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:28:29,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:28:29,773 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:28:29,775 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:28:29,776 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:28:29,776 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:28:29,776 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:28:29,777 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:28:29,777 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:28:29,778 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:28:29,778 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:28:29,778 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:28:29,778 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:28:29,779 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:28:29,779 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:28:29,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:28:29,780 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:28:29,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:28:29,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:28:29,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:28:29,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:28:29,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:28:29,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:28:29,783 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:28:29,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:28:29,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:28:29,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:28:29,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:28:29,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:28:29,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:28:29,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:28:29,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:28:29,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:28:29,785 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:28:29,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:28:29,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:28:29,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:28:29,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:28:29,786 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_b6ce571f-fa42-410e-a946-377b2b299a16/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8aba011b4454b6464ed30c6424ccbb7bc43e89a3e2bf826373810de7cb8fe97a [2021-11-25 20:28:30,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:28:30,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:28:30,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:28:30,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:28:30,083 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:28:30,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/pthread-wmm/mix038.opt.i [2021-11-25 20:28:30,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7/data/615a9194a/bf6ff300c5c6464fb0909a24c8d2b515/FLAG71b62b1bc [2021-11-25 20:28:30,683 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:28:30,684 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/sv-benchmarks/c/pthread-wmm/mix038.opt.i [2021-11-25 20:28:30,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7/data/615a9194a/bf6ff300c5c6464fb0909a24c8d2b515/FLAG71b62b1bc [2021-11-25 20:28:31,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7/data/615a9194a/bf6ff300c5c6464fb0909a24c8d2b515 [2021-11-25 20:28:31,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:28:31,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:28:31,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:28:31,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:28:31,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:28:31,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:28:31" (1/1) ... [2021-11-25 20:28:31,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@369a5b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31, skipping insertion in model container [2021-11-25 20:28:31,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:28:31" (1/1) ... [2021-11-25 20:28:31,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:28:31,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:28:31,298 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_b6ce571f-fa42-410e-a946-377b2b299a16/sv-benchmarks/c/pthread-wmm/mix038.opt.i[944,957] [2021-11-25 20:28:31,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:28:31,550 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:28:31,560 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_b6ce571f-fa42-410e-a946-377b2b299a16/sv-benchmarks/c/pthread-wmm/mix038.opt.i[944,957] [2021-11-25 20:28:31,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:28:31,650 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:28:31,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31 WrapperNode [2021-11-25 20:28:31,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:28:31,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:28:31,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:28:31,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:28:31,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31" (1/1) ... [2021-11-25 20:28:31,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31" (1/1) ... [2021-11-25 20:28:31,706 INFO L137 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 184 [2021-11-25 20:28:31,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:28:31,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:28:31,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:28:31,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:28:31,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31" (1/1) ... [2021-11-25 20:28:31,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31" (1/1) ... [2021-11-25 20:28:31,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31" (1/1) ... [2021-11-25 20:28:31,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31" (1/1) ... [2021-11-25 20:28:31,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31" (1/1) ... [2021-11-25 20:28:31,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31" (1/1) ... [2021-11-25 20:28:31,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31" (1/1) ... [2021-11-25 20:28:31,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:28:31,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:28:31,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:28:31,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:28:31,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31" (1/1) ... [2021-11-25 20:28:31,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:28:31,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:28:31,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:28:31,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:28:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:28:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-25 20:28:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:28:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:28:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:28:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-25 20:28:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-25 20:28:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-25 20:28:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-25 20:28:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-25 20:28:31,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-25 20:28:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:28:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-25 20:28:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:28:31,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:28:31,888 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-25 20:28:32,082 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:28:32,099 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:28:32,461 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:28:32,822 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:28:32,822 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:28:32,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:28:32 BoogieIcfgContainer [2021-11-25 20:28:32,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:28:32,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:28:32,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:28:32,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:28:32,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:28:31" (1/3) ... [2021-11-25 20:28:32,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b545c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:28:32, skipping insertion in model container [2021-11-25 20:28:32,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:31" (2/3) ... [2021-11-25 20:28:32,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b545c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:28:32, skipping insertion in model container [2021-11-25 20:28:32,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:28:32" (3/3) ... [2021-11-25 20:28:32,840 INFO L111 eAbstractionObserver]: Analyzing ICFG mix038.opt.i [2021-11-25 20:28:32,846 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-25 20:28:32,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:28:32,846 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 20:28:32,846 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-25 20:28:32,898 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,898 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,899 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,900 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,900 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,900 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,900 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,901 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,901 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,901 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,901 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,902 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,903 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,903 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,903 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,904 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,904 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,904 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,904 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,905 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,905 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,905 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,905 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,905 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,905 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,906 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,906 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,906 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,906 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,906 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,906 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,907 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,907 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,907 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,907 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,907 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,907 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,907 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,909 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,909 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,909 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,910 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,910 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,910 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,910 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,910 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,910 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,910 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,911 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,911 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,911 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,911 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,911 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,911 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,911 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,912 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,912 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,912 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,913 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,914 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,914 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,914 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,914 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,915 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,915 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,915 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,915 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,915 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,915 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,915 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,916 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,916 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,917 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,920 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,920 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,920 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,921 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,921 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,922 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,922 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,922 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,922 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,928 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,929 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,929 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,929 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,929 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,929 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,929 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,929 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,930 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,930 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,930 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,930 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,930 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,930 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,932 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,932 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,932 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,933 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,933 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,933 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,933 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,933 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,934 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,934 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,934 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,934 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,934 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,934 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,935 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,935 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,935 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,935 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,935 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,935 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,936 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,936 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,936 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,936 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,936 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,936 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,937 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,937 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,937 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,937 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,937 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,938 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,938 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,938 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,938 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,939 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,939 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,939 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,944 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,944 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,944 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,944 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,946 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,946 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,946 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,946 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,946 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,946 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,947 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,947 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,948 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,949 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,949 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,949 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,949 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,949 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,949 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,950 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,950 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,950 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,950 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,950 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,950 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,951 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,951 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,951 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,951 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,951 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,951 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,952 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,952 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,953 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,953 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,953 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,953 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,953 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,953 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,954 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,954 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,954 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,954 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:28:32,954 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 20:28:33,039 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:28:33,046 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 20:28:33,046 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-25 20:28:33,059 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 20:28:33,074 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 117 transitions, 249 flow [2021-11-25 20:28:33,076 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 117 transitions, 249 flow [2021-11-25 20:28:33,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 125 places, 117 transitions, 249 flow [2021-11-25 20:28:33,163 INFO L129 PetriNetUnfolder]: 2/114 cut-off events. [2021-11-25 20:28:33,163 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-25 20:28:33,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 114 events. 2/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2021-11-25 20:28:33,170 INFO L116 LiptonReduction]: Number of co-enabled transitions 2016 [2021-11-25 20:28:38,313 INFO L131 LiptonReduction]: Checked pairs total: 4428 [2021-11-25 20:28:38,313 INFO L133 LiptonReduction]: Total number of compositions: 104 [2021-11-25 20:28:38,321 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 27 transitions, 69 flow [2021-11-25 20:28:38,396 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 634 states, 631 states have (on average 3.283676703645008) internal successors, (2072), 633 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 634 states, 631 states have (on average 3.283676703645008) internal successors, (2072), 633 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 20:28:38,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:38,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:38,408 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:28:38,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1924073570, now seen corresponding path program 1 times [2021-11-25 20:28:38,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:38,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959387509] [2021-11-25 20:28:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:38,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:38,795 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 20:28:38,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:38,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959387509] [2021-11-25 20:28:38,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959387509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:38,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:38,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 20:28:38,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835922885] [2021-11-25 20:28:38,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:38,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:28:38,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:38,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:28:38,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:28:38,834 INFO L87 Difference]: Start difference. First operand has 634 states, 631 states have (on average 3.283676703645008) internal successors, (2072), 633 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:38,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:38,943 INFO L93 Difference]: Finished difference Result 538 states and 1640 transitions. [2021-11-25 20:28:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:28:38,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 20:28:38,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:38,971 INFO L225 Difference]: With dead ends: 538 [2021-11-25 20:28:38,971 INFO L226 Difference]: Without dead ends: 522 [2021-11-25 20:28:38,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 20:28:38,977 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:38,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:28:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-11-25 20:28:39,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2021-11-25 20:28:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 3.071017274472169) internal successors, (1600), 521 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1600 transitions. [2021-11-25 20:28:39,067 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1600 transitions. Word has length 7 [2021-11-25 20:28:39,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:39,068 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 1600 transitions. [2021-11-25 20:28:39,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1600 transitions. [2021-11-25 20:28:39,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 20:28:39,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:39,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:39,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:28:39,071 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:28:39,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash 559943079, now seen corresponding path program 1 times [2021-11-25 20:28:39,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:39,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117766032] [2021-11-25 20:28:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:39,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:39,269 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 20:28:39,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:39,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117766032] [2021-11-25 20:28:39,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117766032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:39,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:39,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:28:39,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457455297] [2021-11-25 20:28:39,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:39,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:28:39,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:39,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:28:39,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:28:39,272 INFO L87 Difference]: Start difference. First operand 522 states and 1600 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:39,427 INFO L93 Difference]: Finished difference Result 878 states and 2514 transitions. [2021-11-25 20:28:39,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:28:39,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-25 20:28:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:39,435 INFO L225 Difference]: With dead ends: 878 [2021-11-25 20:28:39,435 INFO L226 Difference]: Without dead ends: 702 [2021-11-25 20:28:39,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 20:28:39,436 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:39,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:28:39,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-25 20:28:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 614. [2021-11-25 20:28:39,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 2.972267536704731) internal successors, (1822), 613 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:39,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1822 transitions. [2021-11-25 20:28:39,492 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1822 transitions. Word has length 10 [2021-11-25 20:28:39,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:39,492 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 1822 transitions. [2021-11-25 20:28:39,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1822 transitions. [2021-11-25 20:28:39,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 20:28:39,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:39,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:39,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:28:39,504 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:28:39,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:39,505 INFO L85 PathProgramCache]: Analyzing trace with hash 622725871, now seen corresponding path program 1 times [2021-11-25 20:28:39,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:39,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765763121] [2021-11-25 20:28:39,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:39,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:39,613 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 20:28:39,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:39,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765763121] [2021-11-25 20:28:39,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765763121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:39,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:39,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:28:39,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066010264] [2021-11-25 20:28:39,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:39,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:28:39,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:39,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:28:39,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:28:39,616 INFO L87 Difference]: Start difference. First operand 614 states and 1822 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:39,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:39,817 INFO L93 Difference]: Finished difference Result 726 states and 2050 transitions. [2021-11-25 20:28:39,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:28:39,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 20:28:39,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:39,824 INFO L225 Difference]: With dead ends: 726 [2021-11-25 20:28:39,824 INFO L226 Difference]: Without dead ends: 630 [2021-11-25 20:28:39,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:28:39,825 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:39,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 15 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:28:39,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-11-25 20:28:39,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 518. [2021-11-25 20:28:39,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 2.9593810444874276) internal successors, (1530), 517 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1530 transitions. [2021-11-25 20:28:39,850 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1530 transitions. Word has length 11 [2021-11-25 20:28:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:39,850 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 1530 transitions. [2021-11-25 20:28:39,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1530 transitions. [2021-11-25 20:28:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 20:28:39,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:39,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:39,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:28:39,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:28:39,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1236738638, now seen corresponding path program 1 times [2021-11-25 20:28:39,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:39,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946891158] [2021-11-25 20:28:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:39,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:39,943 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 20:28:39,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:39,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946891158] [2021-11-25 20:28:39,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946891158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:39,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:39,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:28:39,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884671776] [2021-11-25 20:28:39,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:39,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:28:39,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:39,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:28:39,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:28:39,946 INFO L87 Difference]: Start difference. First operand 518 states and 1530 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:40,043 INFO L93 Difference]: Finished difference Result 566 states and 1622 transitions. [2021-11-25 20:28:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:28:40,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 20:28:40,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:40,048 INFO L225 Difference]: With dead ends: 566 [2021-11-25 20:28:40,048 INFO L226 Difference]: Without dead ends: 502 [2021-11-25 20:28:40,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 20:28:40,051 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:40,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 8 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:28:40,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-11-25 20:28:40,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2021-11-25 20:28:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.934131736526946) internal successors, (1470), 501 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1470 transitions. [2021-11-25 20:28:40,074 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1470 transitions. Word has length 12 [2021-11-25 20:28:40,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:40,075 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1470 transitions. [2021-11-25 20:28:40,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,075 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1470 transitions. [2021-11-25 20:28:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 20:28:40,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:40,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:40,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:28:40,078 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:28:40,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:40,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1441459606, now seen corresponding path program 1 times [2021-11-25 20:28:40,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:40,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149617634] [2021-11-25 20:28:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:40,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:40,204 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 20:28:40,204 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:40,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149617634] [2021-11-25 20:28:40,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149617634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:40,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:40,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:28:40,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959803950] [2021-11-25 20:28:40,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:40,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:28:40,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:40,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:28:40,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:28:40,207 INFO L87 Difference]: Start difference. First operand 502 states and 1470 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:40,264 INFO L93 Difference]: Finished difference Result 356 states and 890 transitions. [2021-11-25 20:28:40,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:28:40,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 20:28:40,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:40,267 INFO L225 Difference]: With dead ends: 356 [2021-11-25 20:28:40,267 INFO L226 Difference]: Without dead ends: 356 [2021-11-25 20:28:40,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:28:40,269 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:40,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 6 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:28:40,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-25 20:28:40,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2021-11-25 20:28:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.507042253521127) internal successors, (890), 355 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 890 transitions. [2021-11-25 20:28:40,287 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 890 transitions. Word has length 13 [2021-11-25 20:28:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:40,288 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 890 transitions. [2021-11-25 20:28:40,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,288 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 890 transitions. [2021-11-25 20:28:40,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 20:28:40,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:40,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:40,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:28:40,290 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:28:40,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:40,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1447563756, now seen corresponding path program 1 times [2021-11-25 20:28:40,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:40,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656936006] [2021-11-25 20:28:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:40,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:40,407 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 20:28:40,407 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:40,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656936006] [2021-11-25 20:28:40,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656936006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:40,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:40,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:28:40,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076348338] [2021-11-25 20:28:40,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:40,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:28:40,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:40,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:28:40,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:28:40,408 INFO L87 Difference]: Start difference. First operand 356 states and 890 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:40,553 INFO L93 Difference]: Finished difference Result 508 states and 1222 transitions. [2021-11-25 20:28:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:28:40,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-25 20:28:40,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:40,556 INFO L225 Difference]: With dead ends: 508 [2021-11-25 20:28:40,556 INFO L226 Difference]: Without dead ends: 342 [2021-11-25 20:28:40,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:28:40,561 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:40,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 9 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:28:40,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-25 20:28:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 300. [2021-11-25 20:28:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 2.408026755852843) internal successors, (720), 299 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 720 transitions. [2021-11-25 20:28:40,574 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 720 transitions. Word has length 15 [2021-11-25 20:28:40,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:40,574 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 720 transitions. [2021-11-25 20:28:40,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,575 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 720 transitions. [2021-11-25 20:28:40,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 20:28:40,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:40,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:40,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:28:40,576 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:28:40,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:40,577 INFO L85 PathProgramCache]: Analyzing trace with hash 18352445, now seen corresponding path program 1 times [2021-11-25 20:28:40,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:40,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772174101] [2021-11-25 20:28:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:40,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:40,696 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 20:28:40,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:40,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772174101] [2021-11-25 20:28:40,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772174101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:40,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:40,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:28:40,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216236223] [2021-11-25 20:28:40,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:40,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:28:40,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:40,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:28:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:28:40,700 INFO L87 Difference]: Start difference. First operand 300 states and 720 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:40,766 INFO L93 Difference]: Finished difference Result 180 states and 374 transitions. [2021-11-25 20:28:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:28:40,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-25 20:28:40,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:40,768 INFO L225 Difference]: With dead ends: 180 [2021-11-25 20:28:40,768 INFO L226 Difference]: Without dead ends: 180 [2021-11-25 20:28:40,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:28:40,769 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 29 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:40,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 8 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:28:40,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-25 20:28:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-25 20:28:40,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.089385474860335) internal successors, (374), 179 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 374 transitions. [2021-11-25 20:28:40,776 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 374 transitions. Word has length 15 [2021-11-25 20:28:40,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:40,777 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 374 transitions. [2021-11-25 20:28:40,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 374 transitions. [2021-11-25 20:28:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 20:28:40,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:40,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:40,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:28:40,779 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:28:40,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:40,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1713000161, now seen corresponding path program 1 times [2021-11-25 20:28:40,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:40,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212679121] [2021-11-25 20:28:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:40,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:40,900 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 20:28:40,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:40,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212679121] [2021-11-25 20:28:40,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212679121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:40,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:40,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:28:40,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921530793] [2021-11-25 20:28:40,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:40,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:28:40,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:28:40,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:28:40,903 INFO L87 Difference]: Start difference. First operand 180 states and 374 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:40,974 INFO L93 Difference]: Finished difference Result 142 states and 300 transitions. [2021-11-25 20:28:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:28:40,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-25 20:28:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:40,975 INFO L225 Difference]: With dead ends: 142 [2021-11-25 20:28:40,975 INFO L226 Difference]: Without dead ends: 94 [2021-11-25 20:28:40,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:28:40,976 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 58 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:40,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 7 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:28:40,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-25 20:28:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-11-25 20:28:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.0) internal successors, (186), 93 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 186 transitions. [2021-11-25 20:28:40,980 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 186 transitions. Word has length 18 [2021-11-25 20:28:40,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:40,981 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 186 transitions. [2021-11-25 20:28:40,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:40,981 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 186 transitions. [2021-11-25 20:28:40,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 20:28:40,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:40,982 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] [2021-11-25 20:28:40,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:28:40,982 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:28:40,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:40,983 INFO L85 PathProgramCache]: Analyzing trace with hash -614445039, now seen corresponding path program 1 times [2021-11-25 20:28:40,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:40,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183327101] [2021-11-25 20:28:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:40,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:41,069 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 20:28:41,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:41,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183327101] [2021-11-25 20:28:41,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183327101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:41,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:41,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:28:41,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987778201] [2021-11-25 20:28:41,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:41,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:28:41,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:41,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:28:41,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:28:41,071 INFO L87 Difference]: Start difference. First operand 94 states and 186 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:41,187 INFO L93 Difference]: Finished difference Result 120 states and 232 transitions. [2021-11-25 20:28:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:28:41,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-25 20:28:41,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:41,189 INFO L225 Difference]: With dead ends: 120 [2021-11-25 20:28:41,189 INFO L226 Difference]: Without dead ends: 85 [2021-11-25 20:28:41,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:28:41,190 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:41,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 4 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:28:41,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-25 20:28:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74. [2021-11-25 20:28:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 73 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 136 transitions. [2021-11-25 20:28:41,194 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 136 transitions. Word has length 21 [2021-11-25 20:28:41,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:41,194 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 136 transitions. [2021-11-25 20:28:41,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:41,194 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 136 transitions. [2021-11-25 20:28:41,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 20:28:41,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:41,195 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] [2021-11-25 20:28:41,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:28:41,195 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:28:41,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:41,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1765510081, now seen corresponding path program 2 times [2021-11-25 20:28:41,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:41,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217543544] [2021-11-25 20:28:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:41,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:41,312 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 20:28:41,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:41,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217543544] [2021-11-25 20:28:41,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217543544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:41,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:41,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:28:41,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297568590] [2021-11-25 20:28:41,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:41,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:28:41,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:41,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:28:41,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:28:41,314 INFO L87 Difference]: Start difference. First operand 74 states and 136 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:41,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:41,447 INFO L93 Difference]: Finished difference Result 106 states and 195 transitions. [2021-11-25 20:28:41,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:28:41,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-25 20:28:41,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:41,448 INFO L225 Difference]: With dead ends: 106 [2021-11-25 20:28:41,448 INFO L226 Difference]: Without dead ends: 43 [2021-11-25 20:28:41,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:28:41,449 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 38 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:41,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 7 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:28:41,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-25 20:28:41,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-25 20:28:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 42 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:41,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2021-11-25 20:28:41,452 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 21 [2021-11-25 20:28:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:41,452 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2021-11-25 20:28:41,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:41,453 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2021-11-25 20:28:41,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 20:28:41,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:41,453 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] [2021-11-25 20:28:41,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:28:41,454 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:28:41,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash 699124685, now seen corresponding path program 3 times [2021-11-25 20:28:41,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:41,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517199635] [2021-11-25 20:28:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:41,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:41,620 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 20:28:41,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:41,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517199635] [2021-11-25 20:28:41,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517199635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:41,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:41,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:28:41,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515390597] [2021-11-25 20:28:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:41,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:28:41,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:28:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:28:41,622 INFO L87 Difference]: Start difference. First operand 43 states and 69 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:41,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:41,765 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-11-25 20:28:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:28:41,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-25 20:28:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:41,766 INFO L225 Difference]: With dead ends: 54 [2021-11-25 20:28:41,766 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 20:28:41,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:28:41,767 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 35 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:41,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 12 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:28:41,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 20:28:41,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-25 20:28:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:41,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-11-25 20:28:41,770 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 21 [2021-11-25 20:28:41,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:41,770 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-11-25 20:28:41,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-11-25 20:28:41,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 20:28:41,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:41,771 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] [2021-11-25 20:28:41,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:28:41,771 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:28:41,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:41,772 INFO L85 PathProgramCache]: Analyzing trace with hash 966342793, now seen corresponding path program 4 times [2021-11-25 20:28:41,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:41,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30935925] [2021-11-25 20:28:41,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:41,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:28:41,807 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:28:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:28:41,876 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:28:41,876 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:28:41,877 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-25 20:28:41,878 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-25 20:28:41,879 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-11-25 20:28:41,879 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-11-25 20:28:41,879 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 6 remaining) [2021-11-25 20:28:41,879 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-25 20:28:41,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:28:41,881 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:41,886 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-25 20:28:41,886 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:28:42,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:28:42 BasicIcfg [2021-11-25 20:28:42,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:28:42,002 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:28:42,002 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:28:42,002 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:28:42,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:28:32" (3/4) ... [2021-11-25 20:28:42,004 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 20:28:42,148 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 20:28:42,148 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:28:42,149 INFO L158 Benchmark]: Toolchain (without parser) took 11138.16ms. Allocated memory was 90.2MB in the beginning and 176.2MB in the end (delta: 86.0MB). Free memory was 52.4MB in the beginning and 117.8MB in the end (delta: -65.4MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2021-11-25 20:28:42,150 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 90.2MB. Free memory was 70.3MB in the beginning and 70.3MB in the end (delta: 16.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:28:42,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 637.34ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.2MB in the beginning and 74.4MB in the end (delta: -22.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 20:28:42,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.15ms. Allocated memory is still 109.1MB. Free memory was 74.0MB in the beginning and 71.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:28:42,151 INFO L158 Benchmark]: Boogie Preprocessor took 67.24ms. Allocated memory is still 109.1MB. Free memory was 71.9MB in the beginning and 69.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:28:42,151 INFO L158 Benchmark]: RCFGBuilder took 1052.44ms. Allocated memory is still 109.1MB. Free memory was 69.8MB in the beginning and 55.0MB in the end (delta: 14.7MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2021-11-25 20:28:42,152 INFO L158 Benchmark]: TraceAbstraction took 9172.50ms. Allocated memory was 109.1MB in the beginning and 176.2MB in the end (delta: 67.1MB). Free memory was 55.0MB in the beginning and 133.5MB in the end (delta: -78.5MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. [2021-11-25 20:28:42,152 INFO L158 Benchmark]: Witness Printer took 146.85ms. Allocated memory is still 176.2MB. Free memory was 133.5MB in the beginning and 117.8MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 20:28:42,154 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 90.2MB. Free memory was 70.3MB in the beginning and 70.3MB in the end (delta: 16.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 637.34ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.2MB in the beginning and 74.4MB in the end (delta: -22.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.15ms. Allocated memory is still 109.1MB. Free memory was 74.0MB in the beginning and 71.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.24ms. Allocated memory is still 109.1MB. Free memory was 71.9MB in the beginning and 69.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1052.44ms. Allocated memory is still 109.1MB. Free memory was 69.8MB in the beginning and 55.0MB in the end (delta: 14.7MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. * TraceAbstraction took 9172.50ms. Allocated memory was 109.1MB in the beginning and 176.2MB in the end (delta: 67.1MB). Free memory was 55.0MB in the beginning and 133.5MB in the end (delta: -78.5MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. * Witness Printer took 146.85ms. Allocated memory is still 176.2MB. Free memory was 133.5MB in the beginning and 117.8MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 125 PlacesBefore, 36 PlacesAfterwards, 117 TransitionsBefore, 27 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 43 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 104 TotalNumberOfCompositions, 4428 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2291, positive: 2145, positive conditional: 0, positive unconditional: 2145, negative: 146, negative conditional: 0, negative unconditional: 146, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1399, positive: 1364, positive conditional: 0, positive unconditional: 1364, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1399, positive: 1342, positive conditional: 0, positive unconditional: 1342, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 57, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 263, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 222, negative conditional: 0, negative unconditional: 222, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2291, positive: 781, positive conditional: 0, positive unconditional: 781, negative: 111, negative conditional: 0, negative unconditional: 111, unknown: 1399, unknown conditional: 0, unknown unconditional: 1399] , Statistics on independence cache: Total cache size (in pairs): 141, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - 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: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p1_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L715] 0 int __unbuffered_p2_EBX = 0; [L717] 0 int a = 0; [L718] 0 _Bool main$tmp_guard0; [L719] 0 _Bool main$tmp_guard1; [L721] 0 int x = 0; [L723] 0 int y = 0; [L724] 0 _Bool y$flush_delayed; [L725] 0 int y$mem_tmp; [L726] 0 _Bool y$r_buff0_thd0; [L727] 0 _Bool y$r_buff0_thd1; [L728] 0 _Bool y$r_buff0_thd2; [L729] 0 _Bool y$r_buff0_thd3; [L730] 0 _Bool y$r_buff1_thd0; [L731] 0 _Bool y$r_buff1_thd1; [L732] 0 _Bool y$r_buff1_thd2; [L733] 0 _Bool y$r_buff1_thd3; [L734] 0 _Bool y$read_delayed; [L735] 0 int *y$read_delayed_var; [L736] 0 int y$w_buff0; [L737] 0 _Bool y$w_buff0_used; [L738] 0 int y$w_buff1; [L739] 0 _Bool y$w_buff1_used; [L741] 0 int z = 0; [L742] 0 _Bool weak$$choice0; [L743] 0 _Bool weak$$choice2; [L833] 0 pthread_t t1004; [L834] FCALL, FORK 0 pthread_create(&t1004, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1004, ((void *)0), P0, ((void *)0))=-2, t1004={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L835] 0 pthread_t t1005; [L836] FCALL, FORK 0 pthread_create(&t1005, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1005, ((void *)0), P1, ((void *)0))=-1, t1004={5:0}, t1005={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L837] 0 pthread_t t1006; [L838] FCALL, FORK 0 pthread_create(&t1006, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1006, ((void *)0), P2, ((void *)0))=0, t1004={5:0}, t1005={6:0}, t1006={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L790] 3 y$w_buff1 = y$w_buff0 [L791] 3 y$w_buff0 = 1 [L792] 3 y$w_buff1_used = y$w_buff0_used [L793] 3 y$w_buff0_used = (_Bool)1 [L794] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L794] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L795] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L796] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L797] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L798] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L799] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L802] 3 z = 1 [L805] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L808] 3 __unbuffered_p2_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L747] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L750] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L762] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L755] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L757] 1 return 0; [L765] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L766] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L767] 2 y$flush_delayed = weak$$choice2 [L768] 2 y$mem_tmp = y [L769] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L769] 2 y = !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L770] EXPR 2 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L770] 2 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L771] EXPR 2 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L771] 2 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L772] EXPR 2 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L772] 2 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L773] EXPR 2 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L773] 2 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L774] EXPR 2 weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L774] 2 y$r_buff0_thd2 = weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L775] EXPR 2 weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L775] 2 y$r_buff1_thd2 = weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L776] 2 __unbuffered_p1_EAX = y [L777] EXPR 2 y$flush_delayed ? y$mem_tmp : y [L777] 2 y = y$flush_delayed ? y$mem_tmp : y [L778] 2 y$flush_delayed = (_Bool)0 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L783] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L785] 2 return 0; [L811] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L811] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L812] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L812] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L813] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L813] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L814] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L814] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L815] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L815] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L818] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L820] 3 return 0; [L840] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L842] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) VAL [\old(cond)=1, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, cond=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L842] RET 0 assume_abort_if_not(main$tmp_guard0) [L844] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L844] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L844] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L844] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L845] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L845] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L846] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L846] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L847] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L847] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L848] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L848] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L851] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 0) VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1004={5:0}, t1005={6:0}, t1006={3:0}, weak$$choice0=49, weak$$choice2=255, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L853] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 144 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 301 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 301 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 463 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 834 IncrementalHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 40 mSDtfsCounter, 834 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=634occurred in iteration=0, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 253 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 937 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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 20:28:42,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ce571f-fa42-410e-a946-377b2b299a16/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