./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix044.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_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/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_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix044.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/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_aca38aee-1361-47e5-b422-c70948ba3f5e/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 bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:37:55,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:37:55,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:37:55,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:37:55,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:37:55,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:37:55,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:37:55,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:37:55,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:37:55,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:37:55,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:37:55,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:37:55,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:37:55,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:37:55,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:37:55,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:37:55,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:37:55,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:37:55,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:37:55,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:37:55,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:37:55,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:37:55,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:37:55,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:37:55,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:37:55,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:37:55,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:37:55,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:37:55,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:37:55,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:37:55,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:37:55,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:37:55,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:37:55,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:37:55,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:37:55,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:37:55,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:37:55,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:37:55,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:37:55,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:37:55,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:37:55,841 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:37:55,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:37:55,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:37:55,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:37:55,871 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:37:55,871 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:37:55,871 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:37:55,872 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:37:55,872 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:37:55,881 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:37:55,881 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:37:55,881 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:37:55,882 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:37:55,886 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:37:55,887 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:37:55,887 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:37:55,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:37:55,888 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:37:55,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:37:55,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:37:55,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:37:55,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:37:55,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:37:55,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:37:55,890 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:37:55,890 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:37:55,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:37:55,890 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:37:55,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:37:55,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:37:55,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:37:55,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:37:55,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:37:55,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:37:55,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:37:55,895 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:37:55,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:37:55,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:37:55,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:37:55,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:37:55,896 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_aca38aee-1361-47e5-b422-c70948ba3f5e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 [2021-10-29 04:37:56,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:37:56,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:37:56,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:37:56,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:37:56,238 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:37:56,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/pthread-wmm/mix044.opt.i [2021-10-29 04:37:56,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/data/fe10bcddc/b2f165aad5614b33a04a6930b1ee39b1/FLAG73ea44339 [2021-10-29 04:37:57,250 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:37:57,251 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/sv-benchmarks/c/pthread-wmm/mix044.opt.i [2021-10-29 04:37:57,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/data/fe10bcddc/b2f165aad5614b33a04a6930b1ee39b1/FLAG73ea44339 [2021-10-29 04:37:57,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/data/fe10bcddc/b2f165aad5614b33a04a6930b1ee39b1 [2021-10-29 04:37:57,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:37:57,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:37:57,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:37:57,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:37:57,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:37:57,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:37:57" (1/1) ... [2021-10-29 04:37:57,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a08a58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:57, skipping insertion in model container [2021-10-29 04:37:57,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:37:57" (1/1) ... [2021-10-29 04:37:57,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:37:57,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:37:57,787 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_aca38aee-1361-47e5-b422-c70948ba3f5e/sv-benchmarks/c/pthread-wmm/mix044.opt.i[944,957] [2021-10-29 04:37:58,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:37:58,154 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:37:58,173 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_aca38aee-1361-47e5-b422-c70948ba3f5e/sv-benchmarks/c/pthread-wmm/mix044.opt.i[944,957] [2021-10-29 04:37:58,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:37:58,298 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:37:58,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:58 WrapperNode [2021-10-29 04:37:58,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:37:58,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:37:58,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:37:58,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:37:58,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:58" (1/1) ... [2021-10-29 04:37:58,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:58" (1/1) ... [2021-10-29 04:37:58,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:37:58,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:37:58,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:37:58,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:37:58,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:58" (1/1) ... [2021-10-29 04:37:58,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:58" (1/1) ... [2021-10-29 04:37:58,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:58" (1/1) ... [2021-10-29 04:37:58,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:58" (1/1) ... [2021-10-29 04:37:58,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:58" (1/1) ... [2021-10-29 04:37:58,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:58" (1/1) ... [2021-10-29 04:37:58,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:58" (1/1) ... [2021-10-29 04:37:58,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:37:58,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:37:58,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:37:58,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:37:58,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:58" (1/1) ... [2021-10-29 04:37:58,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:37:58,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:37:58,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:37:58,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:37:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 04:37:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-29 04:37:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:37:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:37:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-29 04:37:58,626 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-29 04:37:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-29 04:37:58,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-29 04:37:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-29 04:37:58,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-29 04:37:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-10-29 04:37:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-10-29 04:37:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:37:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-29 04:37:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:37:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:37:58,632 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 04:38:00,881 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:38:00,881 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 04:38:00,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:38:00 BoogieIcfgContainer [2021-10-29 04:38:00,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:38:00,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:38:00,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:38:00,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:38:00,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:37:57" (1/3) ... [2021-10-29 04:38:00,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e580260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:38:00, skipping insertion in model container [2021-10-29 04:38:00,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:58" (2/3) ... [2021-10-29 04:38:00,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e580260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:38:00, skipping insertion in model container [2021-10-29 04:38:00,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:38:00" (3/3) ... [2021-10-29 04:38:00,901 INFO L111 eAbstractionObserver]: Analyzing ICFG mix044.opt.i [2021-10-29 04:38:00,908 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-29 04:38:00,908 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:38:00,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 04:38:00,909 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-29 04:38:00,977 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,977 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,979 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,979 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,979 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,979 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,982 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,982 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,983 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,983 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,985 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,985 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,985 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,986 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,987 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,989 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,990 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,990 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,991 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,991 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,992 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,992 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,993 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,993 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,993 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,994 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,994 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,994 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,994 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,995 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,995 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,995 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,996 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,996 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,997 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,997 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,997 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,997 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,998 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,998 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,999 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:00,999 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,000 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,000 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,000 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,001 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,001 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,001 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,001 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,002 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,002 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,002 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,002 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,003 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,003 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,003 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,004 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,005 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,005 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,005 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,006 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,006 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,006 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,006 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,007 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,007 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,007 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,008 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,008 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,009 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,012 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,013 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,014 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,015 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,015 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,016 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,022 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,023 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,023 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,034 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,034 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,034 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,035 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,035 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,035 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,036 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,038 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,039 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,040 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,040 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,042 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,042 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,043 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,043 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,043 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,043 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,044 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,044 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,044 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,044 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,045 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,045 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,047 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,048 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,048 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,048 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:38:01,050 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-29 04:38:01,121 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:38:01,140 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 04:38:01,150 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-29 04:38:01,168 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-29 04:38:01,179 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 129 transitions, 278 flow [2021-10-29 04:38:01,185 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 129 transitions, 278 flow [2021-10-29 04:38:01,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 278 flow [2021-10-29 04:38:01,289 INFO L129 PetriNetUnfolder]: 2/125 cut-off events. [2021-10-29 04:38:01,289 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-29 04:38:01,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2021-10-29 04:38:01,302 INFO L116 LiptonReduction]: Number of co-enabled transitions 2878 [2021-10-29 04:38:13,432 INFO L131 LiptonReduction]: Checked pairs total: 6593 [2021-10-29 04:38:13,433 INFO L133 LiptonReduction]: Total number of compositions: 107 [2021-10-29 04:38:13,442 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 34 transitions, 88 flow [2021-10-29 04:38:13,626 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3162 states, 3159 states have (on average 4.074707185818297) internal successors, (12872), 3161 states have internal predecessors, (12872), 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 04:38:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 3162 states, 3159 states have (on average 4.074707185818297) internal successors, (12872), 3161 states have internal predecessors, (12872), 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 04:38:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:38:13,648 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:13,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:13,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:13,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:13,656 INFO L85 PathProgramCache]: Analyzing trace with hash 667551178, now seen corresponding path program 1 times [2021-10-29 04:38:13,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:13,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704263699] [2021-10-29 04:38:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:13,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:14,074 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 04:38:14,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:14,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704263699] [2021-10-29 04:38:14,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704263699] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:14,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:14,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 04:38:14,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375953739] [2021-10-29 04:38:14,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:38:14,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:14,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:38:14,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:38:14,124 INFO L87 Difference]: Start difference. First operand has 3162 states, 3159 states have (on average 4.074707185818297) internal successors, (12872), 3161 states have internal predecessors, (12872), 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 4.5) internal successors, (9), 2 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 04:38:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:14,265 INFO L93 Difference]: Finished difference Result 2682 states and 10328 transitions. [2021-10-29 04:38:14,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:38:14,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 04:38:14,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:14,331 INFO L225 Difference]: With dead ends: 2682 [2021-10-29 04:38:14,331 INFO L226 Difference]: Without dead ends: 2602 [2021-10-29 04:38:14,332 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 04:38:14,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-10-29 04:38:14,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2602. [2021-10-29 04:38:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2601 states have (on average 3.869281045751634) internal successors, (10064), 2601 states have internal predecessors, (10064), 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 04:38:14,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 10064 transitions. [2021-10-29 04:38:14,592 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 10064 transitions. Word has length 9 [2021-10-29 04:38:14,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:14,593 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 10064 transitions. [2021-10-29 04:38:14,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 04:38:14,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 10064 transitions. [2021-10-29 04:38:14,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 04:38:14,598 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:14,598 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:14,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:38:14,599 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:14,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:14,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1320442842, now seen corresponding path program 1 times [2021-10-29 04:38:14,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:14,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869012288] [2021-10-29 04:38:14,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:14,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:14,715 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 04:38:14,715 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:14,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869012288] [2021-10-29 04:38:14,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869012288] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:14,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:14,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:38:14,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265986567] [2021-10-29 04:38:14,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:38:14,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:14,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:38:14,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:38:14,719 INFO L87 Difference]: Start difference. First operand 2602 states and 10064 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 04:38:14,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:14,791 INFO L93 Difference]: Finished difference Result 2962 states and 11072 transitions. [2021-10-29 04:38:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:38:14,794 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 04:38:14,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:14,829 INFO L225 Difference]: With dead ends: 2962 [2021-10-29 04:38:14,829 INFO L226 Difference]: Without dead ends: 2482 [2021-10-29 04:38:14,830 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 04:38:14,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2021-10-29 04:38:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2482. [2021-10-29 04:38:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2481 states have (on average 3.8323256751309955) internal successors, (9508), 2481 states have internal predecessors, (9508), 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 04:38:15,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 9508 transitions. [2021-10-29 04:38:15,062 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 9508 transitions. Word has length 12 [2021-10-29 04:38:15,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:15,063 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 9508 transitions. [2021-10-29 04:38:15,064 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 04:38:15,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 9508 transitions. [2021-10-29 04:38:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 04:38:15,068 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:15,068 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:15,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:38:15,069 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:15,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:15,070 INFO L85 PathProgramCache]: Analyzing trace with hash -742380357, now seen corresponding path program 1 times [2021-10-29 04:38:15,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:15,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44550140] [2021-10-29 04:38:15,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:15,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:15,211 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 04:38:15,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:15,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44550140] [2021-10-29 04:38:15,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44550140] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:15,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:15,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:38:15,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645988448] [2021-10-29 04:38:15,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:38:15,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:15,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:38:15,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:38:15,214 INFO L87 Difference]: Start difference. First operand 2482 states and 9508 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 04:38:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:15,292 INFO L93 Difference]: Finished difference Result 2622 states and 9750 transitions. [2021-10-29 04:38:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:38:15,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 04:38:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:15,323 INFO L225 Difference]: With dead ends: 2622 [2021-10-29 04:38:15,323 INFO L226 Difference]: Without dead ends: 2202 [2021-10-29 04:38:15,323 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 04:38:15,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2021-10-29 04:38:15,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 2202. [2021-10-29 04:38:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2201 states have (on average 3.781917310313494) internal successors, (8324), 2201 states have internal predecessors, (8324), 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 04:38:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 8324 transitions. [2021-10-29 04:38:15,516 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 8324 transitions. Word has length 13 [2021-10-29 04:38:15,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:15,516 INFO L470 AbstractCegarLoop]: Abstraction has 2202 states and 8324 transitions. [2021-10-29 04:38:15,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 04:38:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 8324 transitions. [2021-10-29 04:38:15,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 04:38:15,521 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:15,521 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:15,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 04:38:15,522 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:15,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:15,522 INFO L85 PathProgramCache]: Analyzing trace with hash -552293420, now seen corresponding path program 1 times [2021-10-29 04:38:15,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:15,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046466130] [2021-10-29 04:38:15,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:15,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:15,785 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 04:38:15,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:15,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046466130] [2021-10-29 04:38:15,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046466130] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:15,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:15,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:38:15,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793215966] [2021-10-29 04:38:15,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:38:15,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:15,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:38:15,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:38:15,790 INFO L87 Difference]: Start difference. First operand 2202 states and 8324 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:15,995 INFO L93 Difference]: Finished difference Result 2370 states and 8718 transitions. [2021-10-29 04:38:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:38:15,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 04:38:15,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:16,026 INFO L225 Difference]: With dead ends: 2370 [2021-10-29 04:38:16,026 INFO L226 Difference]: Without dead ends: 2090 [2021-10-29 04:38:16,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:38:16,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-10-29 04:38:16,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2090. [2021-10-29 04:38:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2089 states have (on average 3.7472474868358066) internal successors, (7828), 2089 states have internal predecessors, (7828), 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 04:38:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 7828 transitions. [2021-10-29 04:38:16,157 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 7828 transitions. Word has length 15 [2021-10-29 04:38:16,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:16,158 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 7828 transitions. [2021-10-29 04:38:16,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 7828 transitions. [2021-10-29 04:38:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 04:38:16,165 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:16,165 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:16,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 04:38:16,166 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:16,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:16,167 INFO L85 PathProgramCache]: Analyzing trace with hash 397001740, now seen corresponding path program 1 times [2021-10-29 04:38:16,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:16,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436400100] [2021-10-29 04:38:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:16,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:16,345 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 04:38:16,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:16,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436400100] [2021-10-29 04:38:16,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436400100] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:16,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:16,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 04:38:16,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278465014] [2021-10-29 04:38:16,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:38:16,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:16,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:38:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:38:16,349 INFO L87 Difference]: Start difference. First operand 2090 states and 7828 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 04:38:16,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:16,571 INFO L93 Difference]: Finished difference Result 2610 states and 9614 transitions. [2021-10-29 04:38:16,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 04:38:16,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2021-10-29 04:38:16,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:16,635 INFO L225 Difference]: With dead ends: 2610 [2021-10-29 04:38:16,636 INFO L226 Difference]: Without dead ends: 2386 [2021-10-29 04:38:16,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:38:16,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2021-10-29 04:38:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2322. [2021-10-29 04:38:16,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2321 states have (on average 3.7208099956915124) internal successors, (8636), 2321 states have internal predecessors, (8636), 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 04:38:16,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 8636 transitions. [2021-10-29 04:38:16,751 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 8636 transitions. Word has length 17 [2021-10-29 04:38:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:16,752 INFO L470 AbstractCegarLoop]: Abstraction has 2322 states and 8636 transitions. [2021-10-29 04:38:16,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 04:38:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 8636 transitions. [2021-10-29 04:38:16,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 04:38:16,759 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:16,759 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:16,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 04:38:16,760 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:16,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1821107797, now seen corresponding path program 1 times [2021-10-29 04:38:16,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:16,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638370430] [2021-10-29 04:38:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:16,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:16,856 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 04:38:16,857 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:16,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638370430] [2021-10-29 04:38:16,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638370430] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:16,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:16,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:38:16,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764773692] [2021-10-29 04:38:16,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:38:16,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:16,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:38:16,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:38:16,860 INFO L87 Difference]: Start difference. First operand 2322 states and 8636 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 04:38:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:16,917 INFO L93 Difference]: Finished difference Result 2400 states and 8145 transitions. [2021-10-29 04:38:16,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:38:16,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-10-29 04:38:16,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:16,941 INFO L225 Difference]: With dead ends: 2400 [2021-10-29 04:38:16,941 INFO L226 Difference]: Without dead ends: 1824 [2021-10-29 04:38:16,941 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 04:38:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2021-10-29 04:38:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1824. [2021-10-29 04:38:17,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1823 states have (on average 3.3713658804168953) internal successors, (6146), 1823 states have internal predecessors, (6146), 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 04:38:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 6146 transitions. [2021-10-29 04:38:17,088 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 6146 transitions. Word has length 17 [2021-10-29 04:38:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:17,089 INFO L470 AbstractCegarLoop]: Abstraction has 1824 states and 6146 transitions. [2021-10-29 04:38:17,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 04:38:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 6146 transitions. [2021-10-29 04:38:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 04:38:17,095 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:17,095 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:17,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 04:38:17,095 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:17,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1830758029, now seen corresponding path program 1 times [2021-10-29 04:38:17,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:17,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607914787] [2021-10-29 04:38:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:17,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:17,248 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 04:38:17,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:17,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607914787] [2021-10-29 04:38:17,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607914787] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:17,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:17,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:38:17,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992008509] [2021-10-29 04:38:17,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:38:17,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:17,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:38:17,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:38:17,251 INFO L87 Difference]: Start difference. First operand 1824 states and 6146 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:17,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:17,343 INFO L93 Difference]: Finished difference Result 1531 states and 4708 transitions. [2021-10-29 04:38:17,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:38:17,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 04:38:17,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:17,351 INFO L225 Difference]: With dead ends: 1531 [2021-10-29 04:38:17,352 INFO L226 Difference]: Without dead ends: 1162 [2021-10-29 04:38:17,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 04:38:17,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2021-10-29 04:38:17,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1162. [2021-10-29 04:38:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 3.012919896640827) internal successors, (3498), 1161 states have internal predecessors, (3498), 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 04:38:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 3498 transitions. [2021-10-29 04:38:17,443 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 3498 transitions. Word has length 18 [2021-10-29 04:38:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:17,444 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 3498 transitions. [2021-10-29 04:38:17,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 3498 transitions. [2021-10-29 04:38:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 04:38:17,448 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:17,448 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:17,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 04:38:17,449 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:17,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1732479307, now seen corresponding path program 1 times [2021-10-29 04:38:17,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:17,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349059804] [2021-10-29 04:38:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:17,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:17,646 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 04:38:17,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:17,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349059804] [2021-10-29 04:38:17,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349059804] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:17,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:17,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 04:38:17,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023265055] [2021-10-29 04:38:17,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:38:17,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:17,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:38:17,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:38:17,650 INFO L87 Difference]: Start difference. First operand 1162 states and 3498 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 04:38:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:17,744 INFO L93 Difference]: Finished difference Result 967 states and 2874 transitions. [2021-10-29 04:38:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:38:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2021-10-29 04:38:17,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:17,751 INFO L225 Difference]: With dead ends: 967 [2021-10-29 04:38:17,751 INFO L226 Difference]: Without dead ends: 844 [2021-10-29 04:38:17,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 04:38:17,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-10-29 04:38:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2021-10-29 04:38:17,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 3.01779359430605) internal successors, (2544), 843 states have internal predecessors, (2544), 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 04:38:17,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2544 transitions. [2021-10-29 04:38:17,791 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2544 transitions. Word has length 20 [2021-10-29 04:38:17,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:17,792 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2544 transitions. [2021-10-29 04:38:17,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 04:38:17,792 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2544 transitions. [2021-10-29 04:38:17,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 04:38:17,798 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:17,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:17,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 04:38:17,798 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:17,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:17,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1080322910, now seen corresponding path program 1 times [2021-10-29 04:38:17,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:17,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527403558] [2021-10-29 04:38:17,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:17,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:17,936 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 04:38:17,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:17,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527403558] [2021-10-29 04:38:17,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527403558] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:17,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:17,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:38:17,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282501490] [2021-10-29 04:38:17,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:38:17,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:17,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:38:17,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:38:17,942 INFO L87 Difference]: Start difference. First operand 844 states and 2544 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:17,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:17,991 INFO L93 Difference]: Finished difference Result 1092 states and 3213 transitions. [2021-10-29 04:38:17,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:38:17,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-29 04:38:17,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:17,999 INFO L225 Difference]: With dead ends: 1092 [2021-10-29 04:38:17,999 INFO L226 Difference]: Without dead ends: 724 [2021-10-29 04:38:18,000 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:38:18,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-10-29 04:38:18,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 718. [2021-10-29 04:38:18,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 2.8507670850767086) internal successors, (2044), 717 states have internal predecessors, (2044), 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 04:38:18,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 2044 transitions. [2021-10-29 04:38:18,061 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 2044 transitions. Word has length 23 [2021-10-29 04:38:18,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:18,062 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 2044 transitions. [2021-10-29 04:38:18,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:18,063 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 2044 transitions. [2021-10-29 04:38:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 04:38:18,066 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:18,067 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:18,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-29 04:38:18,067 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:18,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:18,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1885648072, now seen corresponding path program 2 times [2021-10-29 04:38:18,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:18,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615273054] [2021-10-29 04:38:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:18,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:18,159 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 04:38:18,160 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:18,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615273054] [2021-10-29 04:38:18,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615273054] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:18,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:18,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:38:18,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020124038] [2021-10-29 04:38:18,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:38:18,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:18,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:38:18,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:38:18,162 INFO L87 Difference]: Start difference. First operand 718 states and 2044 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:18,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:18,202 INFO L93 Difference]: Finished difference Result 989 states and 2713 transitions. [2021-10-29 04:38:18,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:38:18,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-29 04:38:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:18,206 INFO L225 Difference]: With dead ends: 989 [2021-10-29 04:38:18,206 INFO L226 Difference]: Without dead ends: 657 [2021-10-29 04:38:18,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 04:38:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-10-29 04:38:18,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 629. [2021-10-29 04:38:18,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 628 states have (on average 2.627388535031847) internal successors, (1650), 628 states have internal predecessors, (1650), 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 04:38:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1650 transitions. [2021-10-29 04:38:18,238 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1650 transitions. Word has length 23 [2021-10-29 04:38:18,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:18,238 INFO L470 AbstractCegarLoop]: Abstraction has 629 states and 1650 transitions. [2021-10-29 04:38:18,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1650 transitions. [2021-10-29 04:38:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 04:38:18,242 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:18,242 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:18,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-29 04:38:18,243 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:18,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:18,244 INFO L85 PathProgramCache]: Analyzing trace with hash -598231956, now seen corresponding path program 3 times [2021-10-29 04:38:18,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:18,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436688710] [2021-10-29 04:38:18,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:18,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:18,381 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 04:38:18,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:18,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436688710] [2021-10-29 04:38:18,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436688710] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:18,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:18,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 04:38:18,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482133397] [2021-10-29 04:38:18,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:38:18,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:18,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:38:18,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:38:18,385 INFO L87 Difference]: Start difference. First operand 629 states and 1650 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:18,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:18,493 INFO L93 Difference]: Finished difference Result 591 states and 1574 transitions. [2021-10-29 04:38:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 04:38:18,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-29 04:38:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:18,496 INFO L225 Difference]: With dead ends: 591 [2021-10-29 04:38:18,496 INFO L226 Difference]: Without dead ends: 209 [2021-10-29 04:38:18,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-10-29 04:38:18,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-29 04:38:18,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 185. [2021-10-29 04:38:18,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.472826086956522) internal successors, (455), 184 states have internal predecessors, (455), 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 04:38:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 455 transitions. [2021-10-29 04:38:18,505 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 455 transitions. Word has length 23 [2021-10-29 04:38:18,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:18,506 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 455 transitions. [2021-10-29 04:38:18,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:18,506 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 455 transitions. [2021-10-29 04:38:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-29 04:38:18,508 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:18,508 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:18,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-29 04:38:18,508 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:18,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2065601654, now seen corresponding path program 1 times [2021-10-29 04:38:18,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:18,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7986940] [2021-10-29 04:38:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:18,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:38:18,602 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 04:38:18,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:18,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7986940] [2021-10-29 04:38:18,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7986940] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:18,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:18,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:38:18,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647493699] [2021-10-29 04:38:18,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:38:18,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:18,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:38:18,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:38:18,606 INFO L87 Difference]: Start difference. First operand 185 states and 455 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:18,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:18,643 INFO L93 Difference]: Finished difference Result 236 states and 574 transitions. [2021-10-29 04:38:18,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:38:18,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-29 04:38:18,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:18,645 INFO L225 Difference]: With dead ends: 236 [2021-10-29 04:38:18,645 INFO L226 Difference]: Without dead ends: 93 [2021-10-29 04:38:18,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:38:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-29 04:38:18,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-10-29 04:38:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.1630434782608696) internal successors, (199), 92 states have internal predecessors, (199), 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 04:38:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 199 transitions. [2021-10-29 04:38:18,651 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 199 transitions. Word has length 27 [2021-10-29 04:38:18,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:18,651 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 199 transitions. [2021-10-29 04:38:18,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:18,652 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 199 transitions. [2021-10-29 04:38:18,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-29 04:38:18,653 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:38:18,653 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:18,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-29 04:38:18,653 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-29 04:38:18,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:38:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash -493015646, now seen corresponding path program 2 times [2021-10-29 04:38:18,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:38:18,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091231598] [2021-10-29 04:38:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:38:18,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:38:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:38:18,726 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:38:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:38:18,863 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:38:18,863 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:38:18,864 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:38:18,867 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:38:18,867 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-29 04:38:18,867 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-29 04:38:18,868 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-29 04:38:18,868 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-29 04:38:18,868 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:38:18,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-29 04:38:18,871 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:38:18,877 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-29 04:38:18,877 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:38:19,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:38:19 BasicIcfg [2021-10-29 04:38:19,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:38:19,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:38:19,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:38:19,016 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:38:19,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:38:00" (3/4) ... [2021-10-29 04:38:19,019 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:38:19,176 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:38:19,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:38:19,177 INFO L168 Benchmark]: Toolchain (without parser) took 21730.06 ms. Allocated memory was 86.0 MB in the beginning and 335.5 MB in the end (delta: 249.6 MB). Free memory was 59.4 MB in the beginning and 221.1 MB in the end (delta: -161.6 MB). Peak memory consumption was 203.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:19,178 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory is still 61.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:38:19,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 851.65 ms. Allocated memory is still 86.0 MB. Free memory was 59.3 MB in the beginning and 46.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:19,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.21 ms. Allocated memory is still 86.0 MB. Free memory was 46.7 MB in the beginning and 43.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:19,179 INFO L168 Benchmark]: Boogie Preprocessor took 88.84 ms. Allocated memory is still 86.0 MB. Free memory was 43.8 MB in the beginning and 41.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:19,179 INFO L168 Benchmark]: RCFGBuilder took 2366.72 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 41.5 MB in the beginning and 68.0 MB in the end (delta: -26.5 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:19,180 INFO L168 Benchmark]: TraceAbstraction took 18124.55 ms. Allocated memory was 104.9 MB in the beginning and 335.5 MB in the end (delta: 230.7 MB). Free memory was 67.4 MB in the beginning and 109.5 MB in the end (delta: -42.2 MB). Peak memory consumption was 188.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:19,180 INFO L168 Benchmark]: Witness Printer took 160.44 ms. Allocated memory is still 335.5 MB. Free memory was 109.5 MB in the beginning and 221.1 MB in the end (delta: -111.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:19,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory is still 61.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 851.65 ms. Allocated memory is still 86.0 MB. Free memory was 59.3 MB in the beginning and 46.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 128.21 ms. Allocated memory is still 86.0 MB. Free memory was 46.7 MB in the beginning and 43.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.84 ms. Allocated memory is still 86.0 MB. Free memory was 43.8 MB in the beginning and 41.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2366.72 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 41.5 MB in the beginning and 68.0 MB in the end (delta: -26.5 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18124.55 ms. Allocated memory was 104.9 MB in the beginning and 335.5 MB in the end (delta: 230.7 MB). Free memory was 67.4 MB in the beginning and 109.5 MB in the end (delta: -42.2 MB). Peak memory consumption was 188.8 MB. Max. memory is 16.1 GB. * Witness Printer took 160.44 ms. Allocated memory is still 335.5 MB. Free memory was 109.5 MB in the beginning and 221.1 MB in the end (delta: -111.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.2s, 140 PlacesBefore, 46 PlacesAfterwards, 129 TransitionsBefore, 34 TransitionsAfterwards, 2878 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 107 TotalNumberOfCompositions, 6593 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3871, positive: 3700, positive conditional: 0, positive unconditional: 3700, negative: 171, negative conditional: 0, negative unconditional: 171, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2005, positive: 1956, positive conditional: 0, positive unconditional: 1956, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2005, positive: 1934, positive conditional: 0, positive unconditional: 1934, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 71, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 667, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 635, negative conditional: 0, negative unconditional: 635, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3871, positive: 1744, positive conditional: 0, positive unconditional: 1744, negative: 122, negative conditional: 0, negative unconditional: 122, unknown: 2005, unknown conditional: 0, unknown unconditional: 2005] , Statistics on independence cache: Total cache size (in pairs): 252, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int __unbuffered_p3_EBX = 0; [L718] 0 int a = 0; [L720] 0 int b = 0; [L721] 0 _Bool main$tmp_guard0; [L722] 0 _Bool main$tmp_guard1; [L724] 0 int x = 0; [L726] 0 int y = 0; [L728] 0 int z = 0; [L729] 0 _Bool z$flush_delayed; [L730] 0 int z$mem_tmp; [L731] 0 _Bool z$r_buff0_thd0; [L732] 0 _Bool z$r_buff0_thd1; [L733] 0 _Bool z$r_buff0_thd2; [L734] 0 _Bool z$r_buff0_thd3; [L735] 0 _Bool z$r_buff0_thd4; [L736] 0 _Bool z$r_buff1_thd0; [L737] 0 _Bool z$r_buff1_thd1; [L738] 0 _Bool z$r_buff1_thd2; [L739] 0 _Bool z$r_buff1_thd3; [L740] 0 _Bool z$r_buff1_thd4; [L741] 0 _Bool z$read_delayed; [L742] 0 int *z$read_delayed_var; [L743] 0 int z$w_buff0; [L744] 0 _Bool z$w_buff0_used; [L745] 0 int z$w_buff1; [L746] 0 _Bool z$w_buff1_used; [L747] 0 _Bool weak$$choice0; [L748] 0 _Bool weak$$choice2; [L846] 0 pthread_t t1165; [L847] FCALL, FORK 0 pthread_create(&t1165, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L848] 0 pthread_t t1166; [L849] FCALL, FORK 0 pthread_create(&t1166, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L850] 0 pthread_t t1167; [L851] FCALL, FORK 0 pthread_create(&t1167, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L852] 0 pthread_t t1168; [L853] FCALL, FORK 0 pthread_create(&t1168, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L802] 4 z$w_buff1 = z$w_buff0 [L803] 4 z$w_buff0 = 2 [L804] 4 z$w_buff1_used = z$w_buff0_used [L805] 4 z$w_buff0_used = (_Bool)1 [L18] COND FALSE 4 !(!expression) [L807] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L808] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L809] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L810] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L811] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L812] 4 z$r_buff0_thd4 = (_Bool)1 [L815] 4 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L818] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L821] 4 __unbuffered_p3_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L752] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L755] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L767] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L760] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L762] 1 return 0; [L770] 2 __unbuffered_p1_EAX = y VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L782] 3 y = 1 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L785] 3 z = 1 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L788] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L788] EXPR 3 z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z [L788] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L788] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L789] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L789] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L790] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L790] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L791] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L791] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L792] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L792] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L795] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L797] 3 return 0; [L824] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L824] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L825] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L825] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L826] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L826] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L827] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L827] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L828] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L828] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L831] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L833] 4 return 0; [L855] 0 main$tmp_guard0 = __unbuffered_cnt == 4 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L3] COND FALSE 0 !(!cond) [L859] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L859] EXPR 0 z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z [L859] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L859] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L860] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L860] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L861] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L861] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L862] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L862] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L863] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L863] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L866] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L867] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L868] 0 z$flush_delayed = weak$$choice2 [L869] 0 z$mem_tmp = z [L870] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L870] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L871] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L871] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L872] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L872] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L873] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L873] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L874] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L874] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L875] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L876] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L876] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L877] 0 main$tmp_guard1 = !(x == 2 && z == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L878] EXPR 0 z$flush_delayed ? z$mem_tmp : z [L878] 0 z = z$flush_delayed ? z$mem_tmp : z [L879] 0 z$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=50, weak$$choice2=255, x=2, y=1, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 165 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 17.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 436 SDtfs, 739 SDslu, 821 SDs, 0 SdLazy, 212 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3162occurred in iteration=0, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 122 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 205 ConstructedInterpolants, 0 QuantifiedInterpolants, 736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 04:38:19,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca38aee-1361-47e5-b422-c70948ba3f5e/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...