./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF --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 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:18:02,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:18:02,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:18:02,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:18:02,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:18:02,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:18:02,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:18:02,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:18:02,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:18:02,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:18:02,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:18:02,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:18:02,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:18:02,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:18:02,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:18:02,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:18:02,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:18:02,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:18:02,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:18:02,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:18:02,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:18:02,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:18:02,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:18:02,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:18:02,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:18:02,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:18:02,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:18:02,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:18:02,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:18:02,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:18:02,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:18:02,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:18:02,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:18:02,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:18:02,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:18:02,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:18:02,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:18:02,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:18:02,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:18:02,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:18:02,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:18:02,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:18:02,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:18:02,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:18:02,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:18:02,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:18:02,641 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:18:02,642 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:18:02,642 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:18:02,642 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:18:02,642 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:18:02,642 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:18:02,643 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:18:02,643 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:18:02,643 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:18:02,643 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:18:02,644 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:18:02,644 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:18:02,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:18:02,645 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:18:02,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:18:02,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:18:02,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:18:02,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:18:02,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:18:02,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:18:02,646 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:18:02,647 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:18:02,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:18:02,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:18:02,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:18:02,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:18:02,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:18:02,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:18:02,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:18:02,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:18:02,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:18:02,656 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:18:02,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:18:02,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:18:02,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:18:02,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:18:02,658 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_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 [2021-11-12 23:18:03,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:18:03,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:18:03,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:18:03,054 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:18:03,055 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:18:03,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2021-11-12 23:18:03,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/data/d89058871/cbc0c59d88694db696afd12f7830750a/FLAGacfa55fac [2021-11-12 23:18:03,826 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:18:03,826 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2021-11-12 23:18:03,842 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/data/d89058871/cbc0c59d88694db696afd12f7830750a/FLAGacfa55fac [2021-11-12 23:18:04,070 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/data/d89058871/cbc0c59d88694db696afd12f7830750a [2021-11-12 23:18:04,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:18:04,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:18:04,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:18:04,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:18:04,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:18:04,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:18:04" (1/1) ... [2021-11-12 23:18:04,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c13f0c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04, skipping insertion in model container [2021-11-12 23:18:04,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:18:04" (1/1) ... [2021-11-12 23:18:04,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:18:04,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:18:04,361 WARN L228 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_bc8958e1-f068-4a83-a873-3de14f2c3373/sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2021-11-12 23:18:04,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:18:04,620 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:18:04,639 WARN L228 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_bc8958e1-f068-4a83-a873-3de14f2c3373/sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2021-11-12 23:18:04,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:18:04,772 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:18:04,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04 WrapperNode [2021-11-12 23:18:04,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:18:04,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:18:04,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:18:04,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:18:04,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04" (1/1) ... [2021-11-12 23:18:04,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04" (1/1) ... [2021-11-12 23:18:04,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:18:04,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:18:04,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:18:04,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:18:04,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04" (1/1) ... [2021-11-12 23:18:04,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04" (1/1) ... [2021-11-12 23:18:04,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04" (1/1) ... [2021-11-12 23:18:04,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04" (1/1) ... [2021-11-12 23:18:04,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04" (1/1) ... [2021-11-12 23:18:04,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04" (1/1) ... [2021-11-12 23:18:04,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04" (1/1) ... [2021-11-12 23:18:04,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:18:04,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:18:04,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:18:04,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:18:04,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04" (1/1) ... [2021-11-12 23:18:04,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:18:04,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:18:04,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:18:04,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:18:05,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 23:18:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-12 23:18:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:18:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-12 23:18:05,042 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-12 23:18:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:18:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:18:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:18:05,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:18:05,045 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-12 23:18:05,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:18:05,378 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:18:05,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:18:05 BoogieIcfgContainer [2021-11-12 23:18:05,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:18:05,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:18:05,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:18:05,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:18:05,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:18:04" (1/3) ... [2021-11-12 23:18:05,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f09bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:18:05, skipping insertion in model container [2021-11-12 23:18:05,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:04" (2/3) ... [2021-11-12 23:18:05,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f09bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:18:05, skipping insertion in model container [2021-11-12 23:18:05,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:18:05" (3/3) ... [2021-11-12 23:18:05,390 INFO L111 eAbstractionObserver]: Analyzing ICFG 36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2021-11-12 23:18:05,396 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-12 23:18:05,397 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:18:05,397 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:18:05,397 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 23:18:05,426 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,427 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,427 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,427 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,427 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,428 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,428 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,428 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,428 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,429 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,429 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,429 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,430 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,430 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,430 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,430 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,431 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,431 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,432 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,432 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,435 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,436 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,436 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,436 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,436 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,436 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:18:05,439 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-12 23:18:05,507 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:18:05,515 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 [2021-11-12 23:18:05,515 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 23:18:05,545 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 23:18:05,584 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 76 transitions, 157 flow [2021-11-12 23:18:05,598 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 76 transitions, 157 flow [2021-11-12 23:18:05,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 78 places, 76 transitions, 157 flow [2021-11-12 23:18:05,655 INFO L129 PetriNetUnfolder]: 2/75 cut-off events. [2021-11-12 23:18:05,656 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-12 23:18:05,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 75 events. 2/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2021-11-12 23:18:05,662 INFO L116 LiptonReduction]: Number of co-enabled transitions 620 [2021-11-12 23:18:10,308 INFO L131 LiptonReduction]: Checked pairs total: 1443 [2021-11-12 23:18:10,308 INFO L133 LiptonReduction]: Total number of compositions: 66 [2021-11-12 23:18:10,320 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 18 transitions, 41 flow [2021-11-12 23:18:10,354 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 50 states, 49 states have (on average 1.836734693877551) internal successors, (90), 49 states have internal predecessors, (90), 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) [2021-11-12 23:18:10,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 49 states have (on average 1.836734693877551) internal successors, (90), 49 states have internal predecessors, (90), 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) [2021-11-12 23:18:10,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:18:10,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:10,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:18:10,364 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-12 23:18:10,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:10,371 INFO L85 PathProgramCache]: Analyzing trace with hash -723151479, now seen corresponding path program 1 times [2021-11-12 23:18:10,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:18:10,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367372364] [2021-11-12 23:18:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:10,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:18:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:18:10,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:18:10,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367372364] [2021-11-12 23:18:10,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367372364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:18:10,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:18:10,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:18:10,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894233892] [2021-11-12 23:18:10,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:10,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:18:10,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:18:10,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:18:10,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:18:10,691 INFO L87 Difference]: Start difference. First operand has 50 states, 49 states have (on average 1.836734693877551) internal successors, (90), 49 states have internal predecessors, (90), 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 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-12 23:18:10,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:10,783 INFO L93 Difference]: Finished difference Result 71 states and 117 transitions. [2021-11-12 23:18:10,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:18:10,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-11-12 23:18:10,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:10,796 INFO L225 Difference]: With dead ends: 71 [2021-11-12 23:18:10,796 INFO L226 Difference]: Without dead ends: 56 [2021-11-12 23:18:10,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:18:10,808 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 14 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.55ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:10,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 13 Invalid, 40 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 50.55ms Time] [2021-11-12 23:18:10,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-12 23:18:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-11-12 23:18:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.653061224489796) internal successors, (81), 49 states have internal predecessors, (81), 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) [2021-11-12 23:18:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 81 transitions. [2021-11-12 23:18:10,867 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 81 transitions. Word has length 6 [2021-11-12 23:18:10,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:10,868 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 81 transitions. [2021-11-12 23:18:10,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-12 23:18:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 81 transitions. [2021-11-12 23:18:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:18:10,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:10,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:18:10,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:18:10,871 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-12 23:18:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash 135830977, now seen corresponding path program 1 times [2021-11-12 23:18:10,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:18:10,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195507361] [2021-11-12 23:18:10,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:10,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:18:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:18:10,952 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:18:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:18:11,065 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:18:11,066 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:18:11,068 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-12 23:18:11,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2021-11-12 23:18:11,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:18:11,076 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 23:18:11,084 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-12 23:18:11,084 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:18:11,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:18:11 BasicIcfg [2021-11-12 23:18:11,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:18:11,133 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:18:11,133 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:18:11,134 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:18:11,134 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:18:05" (3/4) ... [2021-11-12 23:18:11,136 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-12 23:18:11,221 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:18:11,221 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:18:11,222 INFO L158 Benchmark]: Toolchain (without parser) took 7146.94ms. Allocated memory was 90.2MB in the beginning and 146.8MB in the end (delta: 56.6MB). Free memory was 49.8MB in the beginning and 78.6MB in the end (delta: -28.8MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2021-11-12 23:18:11,224 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory was 67.3MB in the beginning and 67.3MB in the end (delta: 50.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:18:11,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 696.44ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 49.6MB in the beginning and 84.7MB in the end (delta: -35.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2021-11-12 23:18:11,225 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.34ms. Allocated memory is still 119.5MB. Free memory was 84.7MB in the beginning and 82.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:18:11,226 INFO L158 Benchmark]: Boogie Preprocessor took 59.43ms. Allocated memory is still 119.5MB. Free memory was 82.9MB in the beginning and 81.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:18:11,226 INFO L158 Benchmark]: RCFGBuilder took 459.10ms. Allocated memory is still 119.5MB. Free memory was 81.4MB in the beginning and 69.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:18:11,227 INFO L158 Benchmark]: TraceAbstraction took 5749.77ms. Allocated memory was 119.5MB in the beginning and 146.8MB in the end (delta: 27.3MB). Free memory was 68.8MB in the beginning and 80.7MB in the end (delta: -11.9MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2021-11-12 23:18:11,227 INFO L158 Benchmark]: Witness Printer took 87.87ms. Allocated memory is still 146.8MB. Free memory was 80.7MB in the beginning and 78.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:18:11,230 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 90.2MB. Free memory was 67.3MB in the beginning and 67.3MB in the end (delta: 50.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 696.44ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 49.6MB in the beginning and 84.7MB in the end (delta: -35.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.34ms. Allocated memory is still 119.5MB. Free memory was 84.7MB in the beginning and 82.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.43ms. Allocated memory is still 119.5MB. Free memory was 82.9MB in the beginning and 81.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 459.10ms. Allocated memory is still 119.5MB. Free memory was 81.4MB in the beginning and 69.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5749.77ms. Allocated memory was 119.5MB in the beginning and 146.8MB in the end (delta: 27.3MB). Free memory was 68.8MB in the beginning and 80.7MB in the end (delta: -11.9MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * Witness Printer took 87.87ms. Allocated memory is still 146.8MB. Free memory was 80.7MB in the beginning and 78.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 78 PlacesBefore, 21 PlacesAfterwards, 76 TransitionsBefore, 18 TransitionsAfterwards, 620 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 66 TotalNumberOfCompositions, 1443 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 767, positive: 639, positive conditional: 0, positive unconditional: 639, negative: 128, negative conditional: 0, negative unconditional: 128, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 436, positive: 397, positive conditional: 0, positive unconditional: 397, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 436, positive: 385, positive conditional: 0, positive unconditional: 385, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 51, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 148, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 98, negative conditional: 0, negative unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 767, positive: 242, positive conditional: 0, positive unconditional: 242, negative: 89, negative conditional: 0, negative unconditional: 89, unknown: 436, unknown conditional: 0, unknown unconditional: 436] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - 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: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 int g = 42; [L683] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L684] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L694] 0 int r = __VERIFIER_nondet_int(); [L695] 0 int t; [L696] 0 pthread_t id; [L697] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={5:0}, arg={0:0}, B={3:0}, g=42, id={6:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, r=1] [L700] COND TRUE 0 \read(r) [L701] 0 g = 17 VAL [A={5:0}, arg={0:0}, B={3:0}, g=17, id={6:0}, r=1] [L705] 0 t = g [L706] CALL 0 __VERIFIER_assert(!(t == 17)) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [\old(cond)=0, A={5:0}, arg={0:0}, B={3:0}, cond=0, g=17] - UnprovableResult [Line: 697]: 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 3 procedures, 87 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 50.55ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 42.08ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 6 mSDtfsCounter, 37 mSolverCounterSat, 2.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2021-11-12 23:18:11,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8958e1-f068-4a83-a873-3de14f2c3373/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE