./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V --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 798582ee4a09ede0f5c496225fe921dfd53b0dfd5ded797f7106b8b9ef24e798 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:00:05,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:00:05,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:00:05,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:00:05,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:00:05,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:00:05,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:00:05,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:00:05,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:00:05,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:00:05,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:00:05,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:00:05,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:00:05,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:00:05,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:00:05,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:00:05,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:00:05,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:00:05,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:00:05,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:00:05,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:00:05,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:00:05,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:00:05,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:00:05,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:00:05,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:00:05,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:00:05,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:00:05,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:00:05,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:00:05,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:00:05,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:00:05,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:00:05,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:00:05,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:00:05,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:00:05,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:00:05,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:00:05,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:00:05,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:00:05,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:00:05,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:00:05,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:00:05,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:00:05,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:00:05,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:00:05,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:00:05,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:00:05,600 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:00:05,601 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:00:05,601 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:00:05,601 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:00:05,601 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:00:05,601 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:00:05,602 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:00:05,602 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:00:05,602 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:00:05,602 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:00:05,602 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:00:05,603 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:00:05,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:00:05,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:00:05,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:00:05,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:00:05,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:00:05,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:00:05,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:00:05,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:00:05,605 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:00:05,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:00:05,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:00:05,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:00:05,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:00:05,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:00:05,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:00:05,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:00:05,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:00:05,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:00:05,607 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:00:05,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:00:05,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:00:05,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:00:05,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:00:05,608 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_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 798582ee4a09ede0f5c496225fe921dfd53b0dfd5ded797f7106b8b9ef24e798 [2021-11-23 03:00:05,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:00:05,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:00:05,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:00:05,964 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:00:05,965 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:00:05,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i [2021-11-23 03:00:06,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/data/de55f845d/0faa8575ef8d4e9cb30d22cb4753ff6f/FLAGe9755bf37 [2021-11-23 03:00:06,707 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:00:06,708 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i [2021-11-23 03:00:06,744 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/data/de55f845d/0faa8575ef8d4e9cb30d22cb4753ff6f/FLAGe9755bf37 [2021-11-23 03:00:06,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/data/de55f845d/0faa8575ef8d4e9cb30d22cb4753ff6f [2021-11-23 03:00:06,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:00:06,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:00:06,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:00:06,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:00:06,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:00:06,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:00:06" (1/1) ... [2021-11-23 03:00:06,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@275941f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:06, skipping insertion in model container [2021-11-23 03:00:06,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:00:06" (1/1) ... [2021-11-23 03:00:06,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:00:07,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:00:07,239 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_f3c5ac49-7293-4342-aa2c-f0aee32a9925/sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i[949,962] [2021-11-23 03:00:07,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:00:07,449 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:00:07,461 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_f3c5ac49-7293-4342-aa2c-f0aee32a9925/sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i[949,962] [2021-11-23 03:00:07,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:00:07,558 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:00:07,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:07 WrapperNode [2021-11-23 03:00:07,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:00:07,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:00:07,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:00:07,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:00:07,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:07" (1/1) ... [2021-11-23 03:00:07,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:07" (1/1) ... [2021-11-23 03:00:07,666 INFO L137 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 291 [2021-11-23 03:00:07,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:00:07,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:00:07,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:00:07,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:00:07,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:07" (1/1) ... [2021-11-23 03:00:07,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:07" (1/1) ... [2021-11-23 03:00:07,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:07" (1/1) ... [2021-11-23 03:00:07,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:07" (1/1) ... [2021-11-23 03:00:07,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:07" (1/1) ... [2021-11-23 03:00:07,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:07" (1/1) ... [2021-11-23 03:00:07,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:07" (1/1) ... [2021-11-23 03:00:07,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:00:07,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:00:07,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:00:07,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:00:07,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:07" (1/1) ... [2021-11-23 03:00:07,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:00:07,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:00:07,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:00:07,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:00:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:00:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 03:00:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:00:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:00:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:00:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-23 03:00:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-23 03:00:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-23 03:00:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-23 03:00:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-23 03:00:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-23 03:00:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-11-23 03:00:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-11-23 03:00:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:00:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 03:00:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:00:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:00:07,831 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 03:00:07,982 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:00:07,983 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:00:08,703 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:00:09,092 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:00:09,093 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:00:09,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:00:09 BoogieIcfgContainer [2021-11-23 03:00:09,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:00:09,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:00:09,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:00:09,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:00:09,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:00:06" (1/3) ... [2021-11-23 03:00:09,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516da548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:00:09, skipping insertion in model container [2021-11-23 03:00:09,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:07" (2/3) ... [2021-11-23 03:00:09,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516da548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:00:09, skipping insertion in model container [2021-11-23 03:00:09,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:00:09" (3/3) ... [2021-11-23 03:00:09,107 INFO L111 eAbstractionObserver]: Analyzing ICFG mix051_tso.oepc.i [2021-11-23 03:00:09,113 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 03:00:09,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:00:09,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 03:00:09,114 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 03:00:09,170 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,172 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,172 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,172 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,172 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,173 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,173 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,173 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,174 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,174 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,175 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,175 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,175 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,175 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,175 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,176 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,176 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,177 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,177 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,177 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,177 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,177 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,178 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,178 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,178 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,179 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,179 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,179 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,179 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,180 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,180 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,180 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,180 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,180 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,181 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,181 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,182 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,182 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,182 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,182 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,182 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,183 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,183 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,183 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,183 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,184 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,184 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,184 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,184 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,185 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,185 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,185 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,185 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,186 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,187 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,187 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,187 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,188 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,188 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,188 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,190 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,190 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,191 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,191 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,191 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,191 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,191 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,192 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,192 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,193 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,193 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,196 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,196 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,196 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,197 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,198 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,198 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,199 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,199 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,199 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,205 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,205 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,206 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,206 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,206 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,206 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,207 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,207 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,207 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,208 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,208 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,208 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,208 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,209 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,209 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,209 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,209 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,209 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,210 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,210 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,210 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,210 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,211 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,211 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,211 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,211 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,211 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,211 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,212 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,212 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,212 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,213 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,218 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,218 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,219 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,219 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,219 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,219 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,219 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,220 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,220 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,221 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,224 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,224 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,224 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,224 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,225 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,225 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,225 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,225 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,225 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,226 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,226 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,226 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,227 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,227 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,227 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,228 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,228 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,228 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,228 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,228 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,229 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,229 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,231 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,231 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,231 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,232 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,232 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,232 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,232 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,232 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,233 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,233 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:00:09,233 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-23 03:00:09,291 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:00:09,300 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 [2021-11-23 03:00:09,300 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-23 03:00:09,319 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-23 03:00:09,337 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 136 transitions, 292 flow [2021-11-23 03:00:09,339 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 136 transitions, 292 flow [2021-11-23 03:00:09,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2021-11-23 03:00:09,393 INFO L129 PetriNetUnfolder]: 2/132 cut-off events. [2021-11-23 03:00:09,393 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-23 03:00:09,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-11-23 03:00:09,402 INFO L116 LiptonReduction]: Number of co-enabled transitions 3276 [2021-11-23 03:00:31,216 INFO L131 LiptonReduction]: Checked pairs total: 10438 [2021-11-23 03:00:31,216 INFO L133 LiptonReduction]: Total number of compositions: 118 [2021-11-23 03:00:31,224 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 34 transitions, 88 flow [2021-11-23 03:00:31,432 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3622 states, 3619 states have (on average 3.9743022934512298) internal successors, (14383), 3621 states have internal predecessors, (14383), 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) [2021-11-23 03:00:31,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 3622 states, 3619 states have (on average 3.9743022934512298) internal successors, (14383), 3621 states have internal predecessors, (14383), 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) [2021-11-23 03:00:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 03:00:31,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:31,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 03:00:31,456 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:31,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1224702162, now seen corresponding path program 1 times [2021-11-23 03:00:31,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:31,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562118003] [2021-11-23 03:00:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:31,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:31,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:31,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562118003] [2021-11-23 03:00:31,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562118003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:31,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:31,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 03:00:31,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781168886] [2021-11-23 03:00:31,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:31,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:00:31,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:31,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:00:31,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:00:31,858 INFO L87 Difference]: Start difference. First operand has 3622 states, 3619 states have (on average 3.9743022934512298) internal successors, (14383), 3621 states have internal predecessors, (14383), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-23 03:00:32,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:32,063 INFO L93 Difference]: Finished difference Result 2937 states and 11300 transitions. [2021-11-23 03:00:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:00:32,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-23 03:00:32,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:32,117 INFO L225 Difference]: With dead ends: 2937 [2021-11-23 03:00:32,118 INFO L226 Difference]: Without dead ends: 2812 [2021-11-23 03:00:32,118 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 [2021-11-23 03:00:32,122 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:32,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:00:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2021-11-23 03:00:32,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 2812. [2021-11-23 03:00:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2811 states have (on average 3.8687299893276412) internal successors, (10875), 2811 states have internal predecessors, (10875), 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) [2021-11-23 03:00:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 10875 transitions. [2021-11-23 03:00:32,379 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 10875 transitions. Word has length 5 [2021-11-23 03:00:32,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:32,380 INFO L470 AbstractCegarLoop]: Abstraction has 2812 states and 10875 transitions. [2021-11-23 03:00:32,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-23 03:00:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 10875 transitions. [2021-11-23 03:00:32,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:00:32,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:32,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:32,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:00:32,387 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash 254272724, now seen corresponding path program 1 times [2021-11-23 03:00:32,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:32,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423238023] [2021-11-23 03:00:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:32,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:32,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:32,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423238023] [2021-11-23 03:00:32,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423238023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:32,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:32,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:00:32,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316185016] [2021-11-23 03:00:32,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:32,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:00:32,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:32,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:00:32,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:00:32,732 INFO L87 Difference]: Start difference. First operand 2812 states and 10875 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-11-23 03:00:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:32,911 INFO L93 Difference]: Finished difference Result 2687 states and 10325 transitions. [2021-11-23 03:00:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:00:32,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2021-11-23 03:00:32,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:32,942 INFO L225 Difference]: With dead ends: 2687 [2021-11-23 03:00:32,942 INFO L226 Difference]: Without dead ends: 2687 [2021-11-23 03:00:32,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:00:32,945 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:32,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 12 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:00:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-11-23 03:00:33,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 2687. [2021-11-23 03:00:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2687 states, 2686 states have (on average 3.844005956813105) internal successors, (10325), 2686 states have internal predecessors, (10325), 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) [2021-11-23 03:00:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2687 states to 2687 states and 10325 transitions. [2021-11-23 03:00:33,080 INFO L78 Accepts]: Start accepts. Automaton has 2687 states and 10325 transitions. Word has length 11 [2021-11-23 03:00:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:33,082 INFO L470 AbstractCegarLoop]: Abstraction has 2687 states and 10325 transitions. [2021-11-23 03:00:33,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-11-23 03:00:33,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2687 states and 10325 transitions. [2021-11-23 03:00:33,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:00:33,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:33,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:33,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:00:33,091 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:33,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash -401198986, now seen corresponding path program 1 times [2021-11-23 03:00:33,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:33,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155332351] [2021-11-23 03:00:33,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:33,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:33,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:33,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155332351] [2021-11-23 03:00:33,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155332351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:33,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:33,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:00:33,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148934030] [2021-11-23 03:00:33,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:33,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:00:33,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:33,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:00:33,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:00:33,320 INFO L87 Difference]: Start difference. First operand 2687 states and 10325 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) [2021-11-23 03:00:33,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:33,531 INFO L93 Difference]: Finished difference Result 2859 states and 10977 transitions. [2021-11-23 03:00:33,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:00:33,532 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 [2021-11-23 03:00:33,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:33,566 INFO L225 Difference]: With dead ends: 2859 [2021-11-23 03:00:33,567 INFO L226 Difference]: Without dead ends: 2859 [2021-11-23 03:00:33,567 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 [2021-11-23 03:00:33,571 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:33,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 10 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:00:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2021-11-23 03:00:33,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 2859. [2021-11-23 03:00:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 3.8407977606717987) internal successors, (10977), 2858 states have internal predecessors, (10977), 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) [2021-11-23 03:00:33,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 10977 transitions. [2021-11-23 03:00:33,761 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 10977 transitions. Word has length 12 [2021-11-23 03:00:33,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:33,761 INFO L470 AbstractCegarLoop]: Abstraction has 2859 states and 10977 transitions. [2021-11-23 03:00:33,761 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) [2021-11-23 03:00:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 10977 transitions. [2021-11-23 03:00:33,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:00:33,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:33,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:33,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:00:33,765 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:33,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:33,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1196783536, now seen corresponding path program 1 times [2021-11-23 03:00:33,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:33,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256886275] [2021-11-23 03:00:33,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:33,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:33,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:33,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256886275] [2021-11-23 03:00:33,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256886275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:33,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:33,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:00:33,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122644344] [2021-11-23 03:00:33,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:33,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:00:33,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:00:33,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:00:33,969 INFO L87 Difference]: Start difference. First operand 2859 states and 10977 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-11-23 03:00:34,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:34,243 INFO L93 Difference]: Finished difference Result 3094 states and 11949 transitions. [2021-11-23 03:00:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:00:34,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-11-23 03:00:34,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:34,278 INFO L225 Difference]: With dead ends: 3094 [2021-11-23 03:00:34,278 INFO L226 Difference]: Without dead ends: 3094 [2021-11-23 03:00:34,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:00:34,282 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 38 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:34,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 28 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:00:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2021-11-23 03:00:34,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3094. [2021-11-23 03:00:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 3093 states have (on average 3.863239573229874) internal successors, (11949), 3093 states have internal predecessors, (11949), 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) [2021-11-23 03:00:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 11949 transitions. [2021-11-23 03:00:34,482 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 11949 transitions. Word has length 14 [2021-11-23 03:00:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:34,483 INFO L470 AbstractCegarLoop]: Abstraction has 3094 states and 11949 transitions. [2021-11-23 03:00:34,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-11-23 03:00:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 11949 transitions. [2021-11-23 03:00:34,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:00:34,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:34,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:34,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:00:34,487 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:34,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:34,490 INFO L85 PathProgramCache]: Analyzing trace with hash 890501912, now seen corresponding path program 2 times [2021-11-23 03:00:34,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:34,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050162809] [2021-11-23 03:00:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:34,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:34,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:34,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050162809] [2021-11-23 03:00:34,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050162809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:34,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:34,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:00:34,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800474943] [2021-11-23 03:00:34,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:34,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:00:34,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:00:34,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:00:34,754 INFO L87 Difference]: Start difference. First operand 3094 states and 11949 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-11-23 03:00:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:35,028 INFO L93 Difference]: Finished difference Result 3210 states and 12363 transitions. [2021-11-23 03:00:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:00:35,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-11-23 03:00:35,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:35,057 INFO L225 Difference]: With dead ends: 3210 [2021-11-23 03:00:35,058 INFO L226 Difference]: Without dead ends: 3210 [2021-11-23 03:00:35,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:00:35,059 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 46 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:35,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 27 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:00:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2021-11-23 03:00:35,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3085. [2021-11-23 03:00:35,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3085 states, 3084 states have (on average 3.86284046692607) internal successors, (11913), 3084 states have internal predecessors, (11913), 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) [2021-11-23 03:00:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 11913 transitions. [2021-11-23 03:00:35,181 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 11913 transitions. Word has length 14 [2021-11-23 03:00:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:35,182 INFO L470 AbstractCegarLoop]: Abstraction has 3085 states and 11913 transitions. [2021-11-23 03:00:35,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-11-23 03:00:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 11913 transitions. [2021-11-23 03:00:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:00:35,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:35,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:35,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:00:35,186 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:35,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash -602249242, now seen corresponding path program 3 times [2021-11-23 03:00:35,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:35,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603817338] [2021-11-23 03:00:35,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:35,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:35,344 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:35,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603817338] [2021-11-23 03:00:35,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603817338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:35,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:35,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:00:35,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604439181] [2021-11-23 03:00:35,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:35,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:00:35,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:35,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:00:35,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:00:35,346 INFO L87 Difference]: Start difference. First operand 3085 states and 11913 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-11-23 03:00:35,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:35,567 INFO L93 Difference]: Finished difference Result 3775 states and 14425 transitions. [2021-11-23 03:00:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:00:35,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-11-23 03:00:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:35,588 INFO L225 Difference]: With dead ends: 3775 [2021-11-23 03:00:35,589 INFO L226 Difference]: Without dead ends: 3775 [2021-11-23 03:00:35,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:00:35,590 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 75 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:35,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 20 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:00:35,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2021-11-23 03:00:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3467. [2021-11-23 03:00:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3467 states, 3466 states have (on average 3.815926139642239) internal successors, (13226), 3466 states have internal predecessors, (13226), 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) [2021-11-23 03:00:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3467 states to 3467 states and 13226 transitions. [2021-11-23 03:00:35,755 INFO L78 Accepts]: Start accepts. Automaton has 3467 states and 13226 transitions. Word has length 14 [2021-11-23 03:00:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:35,756 INFO L470 AbstractCegarLoop]: Abstraction has 3467 states and 13226 transitions. [2021-11-23 03:00:35,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-11-23 03:00:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3467 states and 13226 transitions. [2021-11-23 03:00:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:00:35,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:35,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:35,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:00:35,760 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:35,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:35,761 INFO L85 PathProgramCache]: Analyzing trace with hash 77790773, now seen corresponding path program 1 times [2021-11-23 03:00:35,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:35,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653670903] [2021-11-23 03:00:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:35,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:35,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:35,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653670903] [2021-11-23 03:00:35,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653670903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:35,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:35,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:00:35,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697989165] [2021-11-23 03:00:35,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:35,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:00:35,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:35,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:00:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:00:35,845 INFO L87 Difference]: Start difference. First operand 3467 states and 13226 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-23 03:00:36,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:36,029 INFO L93 Difference]: Finished difference Result 3508 states and 12211 transitions. [2021-11-23 03:00:36,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:00:36,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-11-23 03:00:36,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:36,045 INFO L225 Difference]: With dead ends: 3508 [2021-11-23 03:00:36,045 INFO L226 Difference]: Without dead ends: 2637 [2021-11-23 03:00:36,045 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 [2021-11-23 03:00:36,046 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:36,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 20 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:00:36,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2021-11-23 03:00:36,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2637. [2021-11-23 03:00:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 2636 states have (on average 3.4430955993930197) internal successors, (9076), 2636 states have internal predecessors, (9076), 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) [2021-11-23 03:00:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 9076 transitions. [2021-11-23 03:00:36,155 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 9076 transitions. Word has length 14 [2021-11-23 03:00:36,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:36,156 INFO L470 AbstractCegarLoop]: Abstraction has 2637 states and 9076 transitions. [2021-11-23 03:00:36,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-23 03:00:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 9076 transitions. [2021-11-23 03:00:36,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:00:36,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:36,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:36,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:00:36,161 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:36,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:36,161 INFO L85 PathProgramCache]: Analyzing trace with hash -832469673, now seen corresponding path program 1 times [2021-11-23 03:00:36,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:36,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771822753] [2021-11-23 03:00:36,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:36,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:36,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:36,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771822753] [2021-11-23 03:00:36,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771822753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:36,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:36,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:00:36,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971870710] [2021-11-23 03:00:36,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:36,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:00:36,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:36,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:00:36,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:00:36,247 INFO L87 Difference]: Start difference. First operand 2637 states and 9076 transitions. Second operand has 5 states, 5 states have (on average 3.0) 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) [2021-11-23 03:00:36,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:36,425 INFO L93 Difference]: Finished difference Result 2202 states and 7017 transitions. [2021-11-23 03:00:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:00:36,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) 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 [2021-11-23 03:00:36,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:36,435 INFO L225 Difference]: With dead ends: 2202 [2021-11-23 03:00:36,435 INFO L226 Difference]: Without dead ends: 1677 [2021-11-23 03:00:36,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:00:36,436 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 62 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:36,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 28 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:00:36,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2021-11-23 03:00:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1479. [2021-11-23 03:00:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1478 states have (on average 3.081867388362652) internal successors, (4555), 1478 states have internal predecessors, (4555), 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) [2021-11-23 03:00:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 4555 transitions. [2021-11-23 03:00:36,512 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 4555 transitions. Word has length 15 [2021-11-23 03:00:36,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:36,513 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 4555 transitions. [2021-11-23 03:00:36,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) 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) [2021-11-23 03:00:36,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 4555 transitions. [2021-11-23 03:00:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 03:00:36,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:36,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:36,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:00:36,517 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:36,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2103229682, now seen corresponding path program 1 times [2021-11-23 03:00:36,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:36,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562219972] [2021-11-23 03:00:36,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:36,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:36,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:36,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562219972] [2021-11-23 03:00:36,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562219972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:36,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:36,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:00:36,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969078771] [2021-11-23 03:00:36,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:36,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:00:36,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:36,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:00:36,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:00:36,620 INFO L87 Difference]: Start difference. First operand 1479 states and 4555 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-23 03:00:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:36,816 INFO L93 Difference]: Finished difference Result 1286 states and 3935 transitions. [2021-11-23 03:00:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:00:36,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2021-11-23 03:00:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:36,821 INFO L225 Difference]: With dead ends: 1286 [2021-11-23 03:00:36,822 INFO L226 Difference]: Without dead ends: 1137 [2021-11-23 03:00:36,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:00:36,823 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 112 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:36,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 32 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:00:36,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-11-23 03:00:36,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1017. [2021-11-23 03:00:36,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1016 states have (on average 3.1190944881889764) internal successors, (3169), 1016 states have internal predecessors, (3169), 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) [2021-11-23 03:00:36,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 3169 transitions. [2021-11-23 03:00:36,858 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 3169 transitions. Word has length 19 [2021-11-23 03:00:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:36,859 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 3169 transitions. [2021-11-23 03:00:36,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-23 03:00:36,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 3169 transitions. [2021-11-23 03:00:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 03:00:36,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:36,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:36,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:00:36,863 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:36,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:36,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1965333740, now seen corresponding path program 1 times [2021-11-23 03:00:36,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:36,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841296362] [2021-11-23 03:00:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:36,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:37,058 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:37,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841296362] [2021-11-23 03:00:37,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841296362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:37,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:37,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:00:37,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964256754] [2021-11-23 03:00:37,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:37,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:00:37,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:37,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:00:37,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:00:37,060 INFO L87 Difference]: Start difference. First operand 1017 states and 3169 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-11-23 03:00:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:37,234 INFO L93 Difference]: Finished difference Result 984 states and 3101 transitions. [2021-11-23 03:00:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:00:37,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2021-11-23 03:00:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:37,239 INFO L225 Difference]: With dead ends: 984 [2021-11-23 03:00:37,239 INFO L226 Difference]: Without dead ends: 964 [2021-11-23 03:00:37,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:00:37,240 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 94 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:37,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 32 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:00:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2021-11-23 03:00:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 940. [2021-11-23 03:00:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 939 states have (on average 3.198083067092652) internal successors, (3003), 939 states have internal predecessors, (3003), 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) [2021-11-23 03:00:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 3003 transitions. [2021-11-23 03:00:37,271 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 3003 transitions. Word has length 23 [2021-11-23 03:00:37,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:37,272 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 3003 transitions. [2021-11-23 03:00:37,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-11-23 03:00:37,272 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 3003 transitions. [2021-11-23 03:00:37,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:00:37,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:37,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:37,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:00:37,276 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:37,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:37,276 INFO L85 PathProgramCache]: Analyzing trace with hash 395561783, now seen corresponding path program 1 times [2021-11-23 03:00:37,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:37,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009109320] [2021-11-23 03:00:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:37,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:37,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:37,344 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:37,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009109320] [2021-11-23 03:00:37,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009109320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:37,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:37,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:00:37,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84921182] [2021-11-23 03:00:37,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:37,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:00:37,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:37,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:00:37,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:00:37,346 INFO L87 Difference]: Start difference. First operand 940 states and 3003 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-23 03:00:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:37,462 INFO L93 Difference]: Finished difference Result 1242 states and 3910 transitions. [2021-11-23 03:00:37,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:00:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-11-23 03:00:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:37,465 INFO L225 Difference]: With dead ends: 1242 [2021-11-23 03:00:37,465 INFO L226 Difference]: Without dead ends: 492 [2021-11-23 03:00:37,465 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 [2021-11-23 03:00:37,466 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:37,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 16 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:00:37,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-23 03:00:37,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2021-11-23 03:00:37,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 2.9226069246435844) internal successors, (1435), 491 states have internal predecessors, (1435), 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) [2021-11-23 03:00:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1435 transitions. [2021-11-23 03:00:37,481 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1435 transitions. Word has length 27 [2021-11-23 03:00:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:37,482 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1435 transitions. [2021-11-23 03:00:37,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-23 03:00:37,482 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1435 transitions. [2021-11-23 03:00:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:00:37,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:37,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:37,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:00:37,484 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:37,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:37,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1953775415, now seen corresponding path program 2 times [2021-11-23 03:00:37,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:37,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581707568] [2021-11-23 03:00:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:37,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:37,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:37,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581707568] [2021-11-23 03:00:37,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581707568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:37,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:37,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:00:37,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545433796] [2021-11-23 03:00:37,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:37,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:00:37,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:37,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:00:37,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:00:37,840 INFO L87 Difference]: Start difference. First operand 492 states and 1435 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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) [2021-11-23 03:00:38,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:38,228 INFO L93 Difference]: Finished difference Result 877 states and 2492 transitions. [2021-11-23 03:00:38,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:00:38,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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 27 [2021-11-23 03:00:38,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:38,231 INFO L225 Difference]: With dead ends: 877 [2021-11-23 03:00:38,231 INFO L226 Difference]: Without dead ends: 669 [2021-11-23 03:00:38,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:00:38,232 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 101 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:38,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 35 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:00:38,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-11-23 03:00:38,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 516. [2021-11-23 03:00:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.8640776699029127) internal successors, (1475), 515 states have internal predecessors, (1475), 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) [2021-11-23 03:00:38,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1475 transitions. [2021-11-23 03:00:38,250 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1475 transitions. Word has length 27 [2021-11-23 03:00:38,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:38,250 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1475 transitions. [2021-11-23 03:00:38,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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) [2021-11-23 03:00:38,250 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1475 transitions. [2021-11-23 03:00:38,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:00:38,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:38,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:38,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:00:38,253 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:38,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:38,253 INFO L85 PathProgramCache]: Analyzing trace with hash -945162301, now seen corresponding path program 3 times [2021-11-23 03:00:38,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:38,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213252017] [2021-11-23 03:00:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:38,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:38,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:38,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213252017] [2021-11-23 03:00:38,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213252017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:38,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:38,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:00:38,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869501712] [2021-11-23 03:00:38,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:38,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:00:38,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:00:38,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:00:38,626 INFO L87 Difference]: Start difference. First operand 516 states and 1475 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2021-11-23 03:00:38,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:38,934 INFO L93 Difference]: Finished difference Result 604 states and 1696 transitions. [2021-11-23 03:00:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:00:38,934 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 27 [2021-11-23 03:00:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:38,936 INFO L225 Difference]: With dead ends: 604 [2021-11-23 03:00:38,936 INFO L226 Difference]: Without dead ends: 458 [2021-11-23 03:00:38,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:00:38,937 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 100 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:38,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 40 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:00:38,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-23 03:00:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 388. [2021-11-23 03:00:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 2.86046511627907) internal successors, (1107), 387 states have internal predecessors, (1107), 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) [2021-11-23 03:00:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1107 transitions. [2021-11-23 03:00:38,952 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1107 transitions. Word has length 27 [2021-11-23 03:00:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:38,953 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 1107 transitions. [2021-11-23 03:00:38,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2021-11-23 03:00:38,953 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1107 transitions. [2021-11-23 03:00:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:00:38,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:38,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:38,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 03:00:38,955 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 03:00:38,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1907915837, now seen corresponding path program 4 times [2021-11-23 03:00:38,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:38,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358370043] [2021-11-23 03:00:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:38,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:00:39,035 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:00:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:00:39,145 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:00:39,145 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:00:39,146 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-23 03:00:39,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-23 03:00:39,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 7 remaining) [2021-11-23 03:00:39,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 7 remaining) [2021-11-23 03:00:39,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 7 remaining) [2021-11-23 03:00:39,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION (1 of 7 remaining) [2021-11-23 03:00:39,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-23 03:00:39,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 03:00:39,152 INFO L732 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:39,157 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-23 03:00:39,158 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:00:39,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:00:39 BasicIcfg [2021-11-23 03:00:39,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:00:39,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:00:39,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:00:39,265 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:00:39,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:00:09" (3/4) ... [2021-11-23 03:00:39,267 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 03:00:39,380 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:00:39,383 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:00:39,384 INFO L158 Benchmark]: Toolchain (without parser) took 32424.67ms. Allocated memory was 94.4MB in the beginning and 388.0MB in the end (delta: 293.6MB). Free memory was 58.2MB in the beginning and 170.2MB in the end (delta: -112.0MB). Peak memory consumption was 181.2MB. Max. memory is 16.1GB. [2021-11-23 03:00:39,384 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 63.7MB in the beginning and 63.7MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:00:39,385 INFO L158 Benchmark]: CACSL2BoogieTranslator took 595.82ms. Allocated memory is still 94.4MB. Free memory was 58.1MB in the beginning and 55.0MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:00:39,385 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.67ms. Allocated memory is still 94.4MB. Free memory was 55.0MB in the beginning and 51.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 03:00:39,386 INFO L158 Benchmark]: Boogie Preprocessor took 75.92ms. Allocated memory is still 94.4MB. Free memory was 51.8MB in the beginning and 49.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:00:39,387 INFO L158 Benchmark]: RCFGBuilder took 1351.60ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 49.4MB in the beginning and 74.8MB in the end (delta: -25.4MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2021-11-23 03:00:39,387 INFO L158 Benchmark]: TraceAbstraction took 30164.75ms. Allocated memory was 119.5MB in the beginning and 388.0MB in the end (delta: 268.4MB). Free memory was 74.0MB in the beginning and 190.1MB in the end (delta: -116.1MB). Peak memory consumption was 151.0MB. Max. memory is 16.1GB. [2021-11-23 03:00:39,388 INFO L158 Benchmark]: Witness Printer took 119.13ms. Allocated memory is still 388.0MB. Free memory was 190.1MB in the beginning and 170.2MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 03:00:39,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 63.7MB in the beginning and 63.7MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 595.82ms. Allocated memory is still 94.4MB. Free memory was 58.1MB in the beginning and 55.0MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.67ms. Allocated memory is still 94.4MB. Free memory was 55.0MB in the beginning and 51.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.92ms. Allocated memory is still 94.4MB. Free memory was 51.8MB in the beginning and 49.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1351.60ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 49.4MB in the beginning and 74.8MB in the end (delta: -25.4MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. * TraceAbstraction took 30164.75ms. Allocated memory was 119.5MB in the beginning and 388.0MB in the end (delta: 268.4MB). Free memory was 74.0MB in the beginning and 190.1MB in the end (delta: -116.1MB). Peak memory consumption was 151.0MB. Max. memory is 16.1GB. * Witness Printer took 119.13ms. Allocated memory is still 388.0MB. Free memory was 190.1MB in the beginning and 170.2MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.9s, 147 PlacesBefore, 46 PlacesAfterwards, 136 TransitionsBefore, 34 TransitionsAfterwards, 3276 CoEnabledTransitionPairs, 9 FixpointIterations, 45 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 118 TotalNumberOfCompositions, 10438 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4420, positive: 4132, positive conditional: 0, positive unconditional: 4132, negative: 288, negative conditional: 0, negative unconditional: 288, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2305, positive: 2222, positive conditional: 0, positive unconditional: 2222, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2305, positive: 2187, positive conditional: 0, positive unconditional: 2187, negative: 118, negative conditional: 0, negative unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 118, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1153, positive: 65, positive conditional: 0, positive unconditional: 65, negative: 1088, negative conditional: 0, negative unconditional: 1088, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4420, positive: 1910, positive conditional: 0, positive unconditional: 1910, negative: 205, negative conditional: 0, negative unconditional: 205, unknown: 2305, unknown conditional: 0, unknown unconditional: 2305] , Statistics on independence cache: Total cache size (in pairs): 192, Positive cache size: 168, Positive conditional cache size: 0, Positive unconditional cache size: 168, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24 - 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: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L714] 0 int __unbuffered_p2_EAX = 0; [L716] 0 int __unbuffered_p3_EAX = 0; [L718] 0 int a = 0; [L719] 0 _Bool main$tmp_guard0; [L720] 0 _Bool main$tmp_guard1; [L722] 0 int x = 0; [L723] 0 _Bool x$flush_delayed; [L724] 0 int x$mem_tmp; [L725] 0 _Bool x$r_buff0_thd0; [L726] 0 _Bool x$r_buff0_thd1; [L727] 0 _Bool x$r_buff0_thd2; [L728] 0 _Bool x$r_buff0_thd3; [L729] 0 _Bool x$r_buff0_thd4; [L730] 0 _Bool x$r_buff1_thd0; [L731] 0 _Bool x$r_buff1_thd1; [L732] 0 _Bool x$r_buff1_thd2; [L733] 0 _Bool x$r_buff1_thd3; [L734] 0 _Bool x$r_buff1_thd4; [L735] 0 _Bool x$read_delayed; [L736] 0 int *x$read_delayed_var; [L737] 0 int x$w_buff0; [L738] 0 _Bool x$w_buff0_used; [L739] 0 int x$w_buff1; [L740] 0 _Bool x$w_buff1_used; [L742] 0 int y = 0; [L744] 0 int z = 0; [L745] 0 _Bool weak$$choice0; [L746] 0 _Bool weak$$choice2; [L848] 0 pthread_t t1377; [L849] FCALL, FORK 0 pthread_create(&t1377, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1377, ((void *)0), P0, ((void *)0))=-3, t1377={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L850] 0 pthread_t t1378; [L851] FCALL, FORK 0 pthread_create(&t1378, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1378, ((void *)0), P1, ((void *)0))=-2, t1377={5:0}, t1378={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L770] 2 x$w_buff1 = x$w_buff0 [L771] 2 x$w_buff0 = 2 [L772] 2 x$w_buff1_used = x$w_buff0_used [L773] 2 x$w_buff0_used = (_Bool)1 [L774] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L774] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L775] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L776] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L777] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L778] 2 x$r_buff1_thd3 = x$r_buff0_thd3 [L779] 2 x$r_buff1_thd4 = x$r_buff0_thd4 [L780] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L783] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=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, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L852] 0 pthread_t t1379; [L853] FCALL, FORK 0 pthread_create(&t1379, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1379, ((void *)0), P2, ((void *)0))=-1, t1377={5:0}, t1378={6:0}, t1379={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L854] 0 pthread_t t1380; [L800] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=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, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=0] [L803] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=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, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=0] [L806] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L806] EXPR 3 x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x [L806] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L806] 3 x = x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L807] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$w_buff0_used [L807] 3 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$w_buff0_used [L808] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$w_buff1_used [L808] 3 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$w_buff1_used [L809] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$r_buff0_thd3 [L809] 3 x$r_buff0_thd3 = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$r_buff0_thd3 [L810] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$r_buff1_thd3 [L810] 3 x$r_buff1_thd3 = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$r_buff1_thd3 [L813] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L815] 3 return 0; [L855] FCALL, FORK 0 pthread_create(&t1380, ((void *)0), P3, ((void *)0)) VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1380, ((void *)0), P3, ((void *)0))=0, t1377={5:0}, t1378={6:0}, t1379={7:0}, t1380={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=0] [L820] 4 z = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, 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, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L823] 4 __unbuffered_p3_EAX = a VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, 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, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L750] 1 a = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, 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, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L753] 1 x = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, 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=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L756] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L756] EXPR 1 x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x [L756] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L756] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L757] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L757] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L758] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L758] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L759] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L759] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L760] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L760] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L763] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L765] 1 return 0; [L826] EXPR 4 x$w_buff0_used && x$r_buff0_thd4 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd4 ? x$w_buff1 : x) [L826] EXPR 4 x$w_buff1_used && x$r_buff1_thd4 ? x$w_buff1 : x [L826] EXPR 4 x$w_buff0_used && x$r_buff0_thd4 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd4 ? x$w_buff1 : x) [L826] 4 x = x$w_buff0_used && x$r_buff0_thd4 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd4 ? x$w_buff1 : x) [L827] EXPR 4 x$w_buff0_used && x$r_buff0_thd4 ? (_Bool)0 : x$w_buff0_used [L827] 4 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd4 ? (_Bool)0 : x$w_buff0_used [L828] EXPR 4 x$w_buff0_used && x$r_buff0_thd4 || x$w_buff1_used && x$r_buff1_thd4 ? (_Bool)0 : x$w_buff1_used [L828] 4 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd4 || x$w_buff1_used && x$r_buff1_thd4 ? (_Bool)0 : x$w_buff1_used [L829] EXPR 4 x$w_buff0_used && x$r_buff0_thd4 ? (_Bool)0 : x$r_buff0_thd4 [L829] 4 x$r_buff0_thd4 = x$w_buff0_used && x$r_buff0_thd4 ? (_Bool)0 : x$r_buff0_thd4 [L830] EXPR 4 x$w_buff0_used && x$r_buff0_thd4 || x$w_buff1_used && x$r_buff1_thd4 ? (_Bool)0 : x$r_buff1_thd4 [L830] 4 x$r_buff1_thd4 = x$w_buff0_used && x$r_buff0_thd4 || x$w_buff1_used && x$r_buff1_thd4 ? (_Bool)0 : x$r_buff1_thd4 [L786] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L786] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L787] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L787] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L788] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L788] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L789] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L789] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L790] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L790] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L793] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L795] 2 return 0; [L833] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L835] 4 return 0; [L857] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L859] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L859] RET 0 assume_abort_if_not(main$tmp_guard0) [L861] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L861] EXPR 0 x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x [L861] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L861] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L862] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L862] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L863] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L863] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L864] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L864] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L865] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L865] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L868] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L869] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L870] 0 x$flush_delayed = weak$$choice2 [L871] 0 x$mem_tmp = x [L872] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L872] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L873] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L873] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0) [L873] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L873] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L874] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L874] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1) [L874] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L874] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L875] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L875] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used) [L875] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L875] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L876] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L876] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L876] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L876] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L877] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L877] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0) [L877] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L877] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L878] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L878] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L878] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L878] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L879] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 0) [L880] EXPR 0 x$flush_delayed ? x$mem_tmp : x [L880] 0 x = x$flush_delayed ? x$mem_tmp : x [L881] 0 x$flush_delayed = (_Bool)0 [L883] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, 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: 851]: 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: 849]: 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: 855]: 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: 853]: 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 9 procedures, 172 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 29.9s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 22.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 760 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 760 mSDsluCounter, 308 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1049 mSDsCounter, 182 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1735 IncrementalHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 182 mSolverCounterUnsat, 94 mSDtfsCounter, 1735 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3622occurred in iteration=0, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 998 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 2167 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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! [2021-11-23 03:00:39,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c5ac49-7293-4342-aa2c-f0aee32a9925/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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