./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG --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 e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:46:59,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:46:59,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:46:59,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:46:59,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:46:59,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:46:59,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:46:59,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:46:59,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:46:59,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:46:59,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:46:59,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:46:59,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:46:59,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:46:59,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:46:59,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:46:59,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:46:59,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:46:59,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:46:59,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:46:59,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:46:59,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:46:59,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:46:59,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:46:59,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:46:59,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:46:59,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:46:59,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:46:59,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:46:59,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:46:59,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:46:59,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:46:59,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:46:59,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:46:59,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:46:59,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:46:59,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:46:59,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:46:59,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:46:59,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:46:59,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:46:59,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:46:59,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:46:59,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:46:59,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:46:59,573 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:46:59,573 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:46:59,574 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:46:59,574 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:46:59,574 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:46:59,574 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:46:59,575 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:46:59,576 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:46:59,576 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:46:59,577 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:46:59,577 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:46:59,578 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:46:59,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:46:59,579 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:46:59,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:46:59,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:46:59,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:46:59,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:46:59,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:46:59,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:46:59,581 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:46:59,581 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:46:59,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:46:59,582 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:46:59,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:46:59,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:46:59,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:46:59,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:46:59,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:46:59,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:46:59,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:46:59,586 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:46:59,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:46:59,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:46:59,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:46:59,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:46:59,588 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_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad [2021-10-29 05:46:59,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:46:59,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:46:59,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:46:59,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:46:59,945 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:46:59,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-29 05:47:00,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/data/1855f0580/9fe7e87e0fac4e5aac8b901a7fdc9eb4/FLAG5c6f2733b [2021-10-29 05:47:00,756 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:47:00,758 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-29 05:47:00,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/data/1855f0580/9fe7e87e0fac4e5aac8b901a7fdc9eb4/FLAG5c6f2733b [2021-10-29 05:47:00,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/data/1855f0580/9fe7e87e0fac4e5aac8b901a7fdc9eb4 [2021-10-29 05:47:00,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:47:00,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:47:01,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:47:01,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:47:01,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:47:01,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:47:00" (1/1) ... [2021-10-29 05:47:01,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b6cbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01, skipping insertion in model container [2021-10-29 05:47:01,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:47:00" (1/1) ... [2021-10-29 05:47:01,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:47:01,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:47:01,298 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_719ef073-75b9-4229-b265-470235da1bfc/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-29 05:47:01,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:47:01,553 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:47:01,572 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_719ef073-75b9-4229-b265-470235da1bfc/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-29 05:47:01,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:47:01,658 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:47:01,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01 WrapperNode [2021-10-29 05:47:01,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:47:01,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:47:01,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:47:01,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:47:01,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01" (1/1) ... [2021-10-29 05:47:01,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01" (1/1) ... [2021-10-29 05:47:01,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:47:01,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:47:01,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:47:01,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:47:01,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01" (1/1) ... [2021-10-29 05:47:01,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01" (1/1) ... [2021-10-29 05:47:01,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01" (1/1) ... [2021-10-29 05:47:01,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01" (1/1) ... [2021-10-29 05:47:01,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01" (1/1) ... [2021-10-29 05:47:01,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01" (1/1) ... [2021-10-29 05:47:01,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01" (1/1) ... [2021-10-29 05:47:01,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:47:01,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:47:01,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:47:01,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:47:01,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01" (1/1) ... [2021-10-29 05:47:01,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:47:01,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:47:01,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:47:01,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:47:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:47:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-29 05:47:01,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:47:01,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:47:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-29 05:47:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-29 05:47:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-29 05:47:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-29 05:47:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-29 05:47:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-29 05:47:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:47:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-29 05:47:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:47:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:47:01,937 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-29 05:47:02,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:47:02,375 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-29 05:47:02,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:02 BoogieIcfgContainer [2021-10-29 05:47:02,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:47:02,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:47:02,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:47:02,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:47:02,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:47:00" (1/3) ... [2021-10-29 05:47:02,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb744a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:47:02, skipping insertion in model container [2021-10-29 05:47:02,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:01" (2/3) ... [2021-10-29 05:47:02,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb744a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:47:02, skipping insertion in model container [2021-10-29 05:47:02,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:02" (3/3) ... [2021-10-29 05:47:02,392 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-29 05:47:02,398 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-29 05:47:02,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:47:02,398 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:47:02,398 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-29 05:47:02,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,457 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,457 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,458 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,458 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,460 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,460 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,463 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,465 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,486 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,487 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,492 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,493 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,493 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,493 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:47:02,499 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-29 05:47:02,569 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:47:02,579 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 [2021-10-29 05:47:02,579 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-29 05:47:02,615 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-29 05:47:02,628 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-29 05:47:02,631 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-29 05:47:02,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-10-29 05:47:02,686 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-10-29 05:47:02,686 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-29 05:47:02,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 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. 0/77 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-29 05:47:02,694 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2021-10-29 05:47:06,297 INFO L131 LiptonReduction]: Checked pairs total: 2368 [2021-10-29 05:47:06,297 INFO L133 LiptonReduction]: Total number of compositions: 73 [2021-10-29 05:47:06,307 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2021-10-29 05:47:06,335 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 178 states, 177 states have (on average 2.7231638418079096) internal successors, (482), 177 states have internal predecessors, (482), 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) [2021-10-29 05:47:06,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 177 states have (on average 2.7231638418079096) internal successors, (482), 177 states have internal predecessors, (482), 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) [2021-10-29 05:47:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:47:06,347 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:47:06,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:47:06,348 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:47:06,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:47:06,354 INFO L85 PathProgramCache]: Analyzing trace with hash -310839676, now seen corresponding path program 1 times [2021-10-29 05:47:06,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:47:06,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091712025] [2021-10-29 05:47:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:47:06,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:47:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:47:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:47:06,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:47:06,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091712025] [2021-10-29 05:47:06,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091712025] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:47:06,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:47:06,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:47:06,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402695004] [2021-10-29 05:47:06,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:47:06,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:47:06,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:47:06,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:47:06,788 INFO L87 Difference]: Start difference. First operand has 178 states, 177 states have (on average 2.7231638418079096) internal successors, (482), 177 states have internal predecessors, (482), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-29 05:47:06,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:47:06,845 INFO L93 Difference]: Finished difference Result 166 states and 441 transitions. [2021-10-29 05:47:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:47:06,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-29 05:47:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:47:06,875 INFO L225 Difference]: With dead ends: 166 [2021-10-29 05:47:06,876 INFO L226 Difference]: Without dead ends: 166 [2021-10-29 05:47:06,877 INFO L786 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 [2021-10-29 05:47:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-29 05:47:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-10-29 05:47:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.672727272727273) internal successors, (441), 165 states have internal predecessors, (441), 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) [2021-10-29 05:47:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2021-10-29 05:47:06,946 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2021-10-29 05:47:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:47:06,950 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2021-10-29 05:47:06,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-29 05:47:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2021-10-29 05:47:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:47:06,956 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:47:06,956 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:47:06,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:47:06,957 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:47:06,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:47:06,959 INFO L85 PathProgramCache]: Analyzing trace with hash -515150132, now seen corresponding path program 1 times [2021-10-29 05:47:06,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:47:06,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037248328] [2021-10-29 05:47:06,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:47:06,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:47:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:47:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:47:07,093 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:47:07,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037248328] [2021-10-29 05:47:07,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037248328] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:47:07,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:47:07,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:47:07,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659756236] [2021-10-29 05:47:07,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:47:07,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:47:07,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:47:07,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:47:07,098 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-29 05:47:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:47:07,139 INFO L93 Difference]: Finished difference Result 184 states and 465 transitions. [2021-10-29 05:47:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:47:07,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-10-29 05:47:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:47:07,145 INFO L225 Difference]: With dead ends: 184 [2021-10-29 05:47:07,147 INFO L226 Difference]: Without dead ends: 88 [2021-10-29 05:47:07,148 INFO L786 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 [2021-10-29 05:47:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-29 05:47:07,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-29 05:47:07,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.3793103448275863) internal successors, (207), 87 states have internal predecessors, (207), 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) [2021-10-29 05:47:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 207 transitions. [2021-10-29 05:47:07,172 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 207 transitions. Word has length 9 [2021-10-29 05:47:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:47:07,173 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 207 transitions. [2021-10-29 05:47:07,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-29 05:47:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 207 transitions. [2021-10-29 05:47:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:47:07,175 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:47:07,176 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:47:07,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:47:07,177 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:47:07,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:47:07,178 INFO L85 PathProgramCache]: Analyzing trace with hash -277019481, now seen corresponding path program 1 times [2021-10-29 05:47:07,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:47:07,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909252503] [2021-10-29 05:47:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:47:07,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:47:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:47:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:47:07,362 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:47:07,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909252503] [2021-10-29 05:47:07,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909252503] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:47:07,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:47:07,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:47:07,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124934823] [2021-10-29 05:47:07,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:47:07,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:47:07,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:47:07,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:47:07,376 INFO L87 Difference]: Start difference. First operand 88 states and 207 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:47:07,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:47:07,421 INFO L93 Difference]: Finished difference Result 118 states and 268 transitions. [2021-10-29 05:47:07,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:47:07,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 05:47:07,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:47:07,425 INFO L225 Difference]: With dead ends: 118 [2021-10-29 05:47:07,425 INFO L226 Difference]: Without dead ends: 64 [2021-10-29 05:47:07,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:47:07,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-29 05:47:07,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-29 05:47:07,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 63 states have internal predecessors, (137), 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) [2021-10-29 05:47:07,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2021-10-29 05:47:07,436 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2021-10-29 05:47:07,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:47:07,436 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2021-10-29 05:47:07,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:47:07,436 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2021-10-29 05:47:07,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:47:07,437 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:47:07,438 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:47:07,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:47:07,438 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:47:07,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:47:07,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1298481685, now seen corresponding path program 1 times [2021-10-29 05:47:07,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:47:07,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604781235] [2021-10-29 05:47:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:47:07,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:47:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:47:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:47:07,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:47:07,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604781235] [2021-10-29 05:47:07,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604781235] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:47:07,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:47:07,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:47:07,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308491607] [2021-10-29 05:47:07,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:47:07,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:47:07,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:47:07,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:47:07,640 INFO L87 Difference]: Start difference. First operand 64 states and 137 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) [2021-10-29 05:47:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:47:07,685 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2021-10-29 05:47:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:47:07,687 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 [2021-10-29 05:47:07,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:47:07,688 INFO L225 Difference]: With dead ends: 77 [2021-10-29 05:47:07,688 INFO L226 Difference]: Without dead ends: 56 [2021-10-29 05:47:07,689 INFO L786 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 [2021-10-29 05:47:07,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-29 05:47:07,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-29 05:47:07,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 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) [2021-10-29 05:47:07,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2021-10-29 05:47:07,701 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2021-10-29 05:47:07,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:47:07,701 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2021-10-29 05:47:07,702 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) [2021-10-29 05:47:07,702 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2021-10-29 05:47:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:47:07,703 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:47:07,703 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:47:07,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:47:07,703 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:47:07,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:47:07,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1593223979, now seen corresponding path program 1 times [2021-10-29 05:47:07,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:47:07,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036964137] [2021-10-29 05:47:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:47:07,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:47:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:47:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:47:07,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:47:07,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036964137] [2021-10-29 05:47:07,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036964137] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:47:07,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:47:07,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:47:07,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339424054] [2021-10-29 05:47:07,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:47:07,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:47:07,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:47:07,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:47:07,842 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:47:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:47:07,888 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2021-10-29 05:47:07,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:47:07,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 05:47:07,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:47:07,890 INFO L225 Difference]: With dead ends: 57 [2021-10-29 05:47:07,890 INFO L226 Difference]: Without dead ends: 42 [2021-10-29 05:47:07,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:47:07,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-29 05:47:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-29 05:47:07,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 41 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:47:07,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2021-10-29 05:47:07,907 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2021-10-29 05:47:07,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:47:07,908 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2021-10-29 05:47:07,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:47:07,908 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2021-10-29 05:47:07,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:47:07,910 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:47:07,910 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:47:07,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:47:07,911 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:47:07,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:47:07,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1250094408, now seen corresponding path program 1 times [2021-10-29 05:47:07,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:47:07,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803486697] [2021-10-29 05:47:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:47:07,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:47:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:47:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:47:08,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:47:08,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803486697] [2021-10-29 05:47:08,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803486697] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:47:08,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:47:08,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:47:08,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318908259] [2021-10-29 05:47:08,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:47:08,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:47:08,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:47:08,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:47:08,061 INFO L87 Difference]: Start difference. First operand 42 states and 69 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) [2021-10-29 05:47:08,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:47:08,131 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2021-10-29 05:47:08,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:47:08,132 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 [2021-10-29 05:47:08,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:47:08,133 INFO L225 Difference]: With dead ends: 39 [2021-10-29 05:47:08,133 INFO L226 Difference]: Without dead ends: 33 [2021-10-29 05:47:08,133 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:47:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-29 05:47:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-29 05:47:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 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) [2021-10-29 05:47:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2021-10-29 05:47:08,136 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2021-10-29 05:47:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:47:08,137 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2021-10-29 05:47:08,137 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) [2021-10-29 05:47:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2021-10-29 05:47:08,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:47:08,138 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:47:08,138 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:47:08,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:47:08,147 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:47:08,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:47:08,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1251829557, now seen corresponding path program 1 times [2021-10-29 05:47:08,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:47:08,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527453202] [2021-10-29 05:47:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:47:08,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:47:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:47:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:47:08,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:47:08,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527453202] [2021-10-29 05:47:08,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527453202] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:47:08,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:47:08,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:47:08,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67567765] [2021-10-29 05:47:08,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:47:08,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:47:08,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:47:08,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:47:08,243 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-10-29 05:47:08,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:47:08,262 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2021-10-29 05:47:08,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:47:08,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-10-29 05:47:08,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:47:08,263 INFO L225 Difference]: With dead ends: 32 [2021-10-29 05:47:08,263 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:47:08,264 INFO L786 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 [2021-10-29 05:47:08,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:47:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:47:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-29 05:47:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:47:08,280 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-29 05:47:08,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:47:08,282 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:47:08,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-10-29 05:47:08,282 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:47:08,283 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:47:08,285 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:08,286 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-29 05:47:08,286 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-29 05:47:08,287 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-29 05:47:08,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 05:47:08,289 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:47:08,294 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-29 05:47:08,294 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:47:08,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:47:08 BasicIcfg [2021-10-29 05:47:08,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:47:08,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:47:08,299 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:47:08,299 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:47:08,300 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:02" (3/4) ... [2021-10-29 05:47:08,303 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:47:08,311 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-29 05:47:08,311 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-29 05:47:08,312 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-29 05:47:08,320 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-29 05:47:08,321 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:47:08,321 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:47:08,321 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:47:08,387 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:47:08,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:47:08,389 INFO L168 Benchmark]: Toolchain (without parser) took 7393.33 ms. Allocated memory was 107.0 MB in the beginning and 159.4 MB in the end (delta: 52.4 MB). Free memory was 76.0 MB in the beginning and 128.4 MB in the end (delta: -52.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:08,390 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 107.0 MB. Free memory is still 62.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:08,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.63 ms. Allocated memory is still 107.0 MB. Free memory was 75.8 MB in the beginning and 71.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:08,392 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.53 ms. Allocated memory is still 107.0 MB. Free memory was 71.4 MB in the beginning and 69.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:08,392 INFO L168 Benchmark]: Boogie Preprocessor took 65.73 ms. Allocated memory is still 107.0 MB. Free memory was 69.7 MB in the beginning and 68.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:08,393 INFO L168 Benchmark]: RCFGBuilder took 559.91 ms. Allocated memory is still 107.0 MB. Free memory was 68.3 MB in the beginning and 56.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:08,393 INFO L168 Benchmark]: TraceAbstraction took 5917.84 ms. Allocated memory was 107.0 MB in the beginning and 159.4 MB in the end (delta: 52.4 MB). Free memory was 55.7 MB in the beginning and 130.5 MB in the end (delta: -74.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:08,393 INFO L168 Benchmark]: Witness Printer took 88.98 ms. Allocated memory is still 159.4 MB. Free memory was 130.5 MB in the beginning and 128.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:08,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 107.0 MB. Free memory is still 62.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 659.63 ms. Allocated memory is still 107.0 MB. Free memory was 75.8 MB in the beginning and 71.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.53 ms. Allocated memory is still 107.0 MB. Free memory was 71.4 MB in the beginning and 69.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.73 ms. Allocated memory is still 107.0 MB. Free memory was 69.7 MB in the beginning and 68.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 559.91 ms. Allocated memory is still 107.0 MB. Free memory was 68.3 MB in the beginning and 56.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5917.84 ms. Allocated memory was 107.0 MB in the beginning and 159.4 MB in the end (delta: 52.4 MB). Free memory was 55.7 MB in the beginning and 130.5 MB in the end (delta: -74.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 88.98 ms. Allocated memory is still 159.4 MB. Free memory was 130.5 MB in the beginning and 128.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 91 PlacesBefore, 30 PlacesAfterwards, 83 TransitionsBefore, 20 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2368 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1270, positive: 1188, positive conditional: 0, positive unconditional: 1188, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 885, positive: 849, positive conditional: 0, positive unconditional: 849, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 885, positive: 847, positive conditional: 0, positive unconditional: 847, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 137, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 132, negative conditional: 0, negative unconditional: 132, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1270, positive: 339, positive conditional: 0, positive unconditional: 339, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 885, unknown conditional: 0, unknown unconditional: 885] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - 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 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 149 SDslu, 97 SDs, 0 SdLazy, 66 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 296 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 05:47:08,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719ef073-75b9-4229-b265-470235da1bfc/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...