./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stateful01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stateful01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:52:26,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:52:26,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:52:26,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:52:26,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:52:26,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:52:26,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:52:26,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:52:26,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:52:26,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:52:26,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:52:26,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:52:26,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:52:26,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:52:26,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:52:26,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:52:26,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:52:26,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:52:26,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:52:26,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:52:26,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:52:26,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:52:26,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:52:26,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:52:26,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:52:26,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:52:26,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:52:26,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:52:26,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:52:26,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:52:26,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:52:26,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:52:26,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:52:26,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:52:26,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:52:26,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:52:26,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:52:26,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:52:26,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:52:26,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:52:26,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:52:26,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 12:52:26,736 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:52:26,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:52:26,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:52:26,736 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:52:26,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:52:26,737 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:52:26,737 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:52:26,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:52:26,737 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:52:26,737 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:52:26,738 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:52:26,738 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:52:26,738 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:52:26,738 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:52:26,738 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:52:26,738 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:52:26,739 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:52:26,739 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:52:26,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 12:52:26,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 12:52:26,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:52:26,740 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:52:26,740 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:52:26,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:52:26,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:52:26,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:52:26,741 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 12:52:26,741 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 12:52:26,741 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 12:52:26,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:52:26,741 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 12:52:26,741 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:52:26,741 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:52:26,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:52:26,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:52:26,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:52:26,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:52:26,742 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:52:26,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:52:26,742 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:52:26,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:52:26,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:52:26,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2022-12-14 12:52:26,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:52:26,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:52:26,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:52:26,934 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:52:26,934 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:52:26,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread/stateful01-1.i [2022-12-14 12:52:29,538 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:52:29,723 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:52:29,724 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/sv-benchmarks/c/pthread/stateful01-1.i [2022-12-14 12:52:29,741 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/data/0d3d9125a/4762dee0b2ec4a4ba8e6702a47e3852e/FLAGaa3150815 [2022-12-14 12:52:29,751 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/data/0d3d9125a/4762dee0b2ec4a4ba8e6702a47e3852e [2022-12-14 12:52:29,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:52:29,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:52:29,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:52:29,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:52:29,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:52:29,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:52:29" (1/1) ... [2022-12-14 12:52:29,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb184c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:29, skipping insertion in model container [2022-12-14 12:52:29,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:52:29" (1/1) ... [2022-12-14 12:52:29,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:52:29,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:52:30,010 WARN L237 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_1896c264-2712-4d26-9252-121a80c80376/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-12-14 12:52:30,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:52:30,023 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:52:30,056 WARN L237 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_1896c264-2712-4d26-9252-121a80c80376/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-12-14 12:52:30,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:52:30,082 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:52:30,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30 WrapperNode [2022-12-14 12:52:30,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:52:30,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:52:30,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:52:30,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:52:30,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30" (1/1) ... [2022-12-14 12:52:30,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30" (1/1) ... [2022-12-14 12:52:30,118 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-12-14 12:52:30,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:52:30,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:52:30,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:52:30,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:52:30,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30" (1/1) ... [2022-12-14 12:52:30,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30" (1/1) ... [2022-12-14 12:52:30,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30" (1/1) ... [2022-12-14 12:52:30,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30" (1/1) ... [2022-12-14 12:52:30,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30" (1/1) ... [2022-12-14 12:52:30,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30" (1/1) ... [2022-12-14 12:52:30,137 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30" (1/1) ... [2022-12-14 12:52:30,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30" (1/1) ... [2022-12-14 12:52:30,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:52:30,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:52:30,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:52:30,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:52:30,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30" (1/1) ... [2022-12-14 12:52:30,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:52:30,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:52:30,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:52:30,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:52:30,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 12:52:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 12:52:30,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 12:52:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 12:52:30,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 12:52:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:52:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 12:52:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:52:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:52:30,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:52:30,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:52:30,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:52:30,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:52:30,197 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 12:52:30,290 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:52:30,291 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:52:30,473 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:52:30,479 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:52:30,479 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 12:52:30,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:52:30 BoogieIcfgContainer [2022-12-14 12:52:30,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:52:30,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:52:30,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:52:30,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:52:30,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:52:29" (1/3) ... [2022-12-14 12:52:30,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2a6e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:52:30, skipping insertion in model container [2022-12-14 12:52:30,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:30" (2/3) ... [2022-12-14 12:52:30,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2a6e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:52:30, skipping insertion in model container [2022-12-14 12:52:30,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:52:30" (3/3) ... [2022-12-14 12:52:30,487 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-12-14 12:52:30,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:52:30,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-14 12:52:30,500 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 12:52:30,552 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 12:52:30,583 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:52:30,595 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 105 transitions, 226 flow [2022-12-14 12:52:30,598 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 105 transitions, 226 flow [2022-12-14 12:52:30,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 105 transitions, 226 flow [2022-12-14 12:52:30,641 INFO L130 PetriNetUnfolder]: 1/103 cut-off events. [2022-12-14 12:52:30,641 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 12:52:30,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 103 events. 1/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-12-14 12:52:30,645 INFO L119 LiptonReduction]: Number of co-enabled transitions 940 [2022-12-14 12:52:33,928 INFO L134 LiptonReduction]: Checked pairs total: 3275 [2022-12-14 12:52:33,929 INFO L136 LiptonReduction]: Total number of compositions: 100 [2022-12-14 12:52:33,935 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 35 transitions, 86 flow [2022-12-14 12:52:33,964 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 323 states, 313 states have (on average 2.415335463258786) internal successors, (756), 322 states have internal predecessors, (756), 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) [2022-12-14 12:52:33,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:52:33,987 INFO L357 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66110104, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:52:33,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-14 12:52:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 323 states, 313 states have (on average 2.415335463258786) internal successors, (756), 322 states have internal predecessors, (756), 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) [2022-12-14 12:52:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 12:52:33,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:33,992 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 12:52:33,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash 374, now seen corresponding path program 1 times [2022-12-14 12:52:34,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:52:34,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857476656] [2022-12-14 12:52:34,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:34,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:52:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:34,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:52:34,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857476656] [2022-12-14 12:52:34,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857476656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:34,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:34,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 12:52:34,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982943590] [2022-12-14 12:52:34,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:34,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:52:34,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:52:34,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:52:34,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:52:34,118 INFO L87 Difference]: Start difference. First operand has 323 states, 313 states have (on average 2.415335463258786) internal successors, (756), 322 states have internal predecessors, (756), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-12-14 12:52:34,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:34,164 INFO L93 Difference]: Finished difference Result 321 states and 754 transitions. [2022-12-14 12:52:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:52:34,166 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-12-14 12:52:34,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:34,174 INFO L225 Difference]: With dead ends: 321 [2022-12-14 12:52:34,174 INFO L226 Difference]: Without dead ends: 321 [2022-12-14 12:52:34,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:52:34,177 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:34,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:52:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-12-14 12:52:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-12-14 12:52:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 313 states have (on average 2.4089456869009584) internal successors, (754), 320 states have internal predecessors, (754), 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) [2022-12-14 12:52:34,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 754 transitions. [2022-12-14 12:52:34,226 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 754 transitions. Word has length 1 [2022-12-14 12:52:34,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:34,226 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 754 transitions. [2022-12-14 12:52:34,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-12-14 12:52:34,227 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 754 transitions. [2022-12-14 12:52:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:52:34,227 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:34,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:52:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:52:34,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:34,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash 366216, now seen corresponding path program 1 times [2022-12-14 12:52:34,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:52:34,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572318131] [2022-12-14 12:52:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:34,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:52:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:34,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:52:34,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572318131] [2022-12-14 12:52:34,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572318131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:34,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:34,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:52:34,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793618108] [2022-12-14 12:52:34,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:34,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:52:34,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:52:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:52:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:34,372 INFO L87 Difference]: Start difference. First operand 321 states and 754 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 12:52:34,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:34,400 INFO L93 Difference]: Finished difference Result 305 states and 724 transitions. [2022-12-14 12:52:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:52:34,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-12-14 12:52:34,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:34,402 INFO L225 Difference]: With dead ends: 305 [2022-12-14 12:52:34,402 INFO L226 Difference]: Without dead ends: 305 [2022-12-14 12:52:34,402 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:52:34,403 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:34,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 6 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:52:34,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-12-14 12:52:34,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-12-14 12:52:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 299 states have (on average 2.4214046822742477) internal successors, (724), 304 states have internal predecessors, (724), 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) [2022-12-14 12:52:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 724 transitions. [2022-12-14 12:52:34,419 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 724 transitions. Word has length 3 [2022-12-14 12:52:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:34,420 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 724 transitions. [2022-12-14 12:52:34,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 12:52:34,420 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 724 transitions. [2022-12-14 12:52:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:52:34,420 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:34,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:52:34,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:52:34,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:34,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:34,421 INFO L85 PathProgramCache]: Analyzing trace with hash 366217, now seen corresponding path program 1 times [2022-12-14 12:52:34,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:52:34,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245188100] [2022-12-14 12:52:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:34,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:52:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:34,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:52:34,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245188100] [2022-12-14 12:52:34,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245188100] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:34,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:34,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:52:34,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826205551] [2022-12-14 12:52:34,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:34,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:52:34,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:52:34,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:52:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:34,520 INFO L87 Difference]: Start difference. First operand 305 states and 724 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 12:52:34,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:34,547 INFO L93 Difference]: Finished difference Result 289 states and 694 transitions. [2022-12-14 12:52:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:52:34,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-12-14 12:52:34,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:34,548 INFO L225 Difference]: With dead ends: 289 [2022-12-14 12:52:34,548 INFO L226 Difference]: Without dead ends: 289 [2022-12-14 12:52:34,549 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:52:34,550 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:34,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 6 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:52:34,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-12-14 12:52:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-12-14 12:52:34,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 285 states have (on average 2.4350877192982456) internal successors, (694), 288 states have internal predecessors, (694), 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) [2022-12-14 12:52:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 694 transitions. [2022-12-14 12:52:34,562 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 694 transitions. Word has length 3 [2022-12-14 12:52:34,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:34,562 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 694 transitions. [2022-12-14 12:52:34,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 12:52:34,562 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 694 transitions. [2022-12-14 12:52:34,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:52:34,563 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:34,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:52:34,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:52:34,563 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:34,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:34,564 INFO L85 PathProgramCache]: Analyzing trace with hash 351943298, now seen corresponding path program 1 times [2022-12-14 12:52:34,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:52:34,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283726280] [2022-12-14 12:52:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:34,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:52:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:34,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:34,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:52:34,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283726280] [2022-12-14 12:52:34,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283726280] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:34,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:34,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:52:34,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095242236] [2022-12-14 12:52:34,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:34,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:52:34,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:52:34,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:52:34,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:52:34,702 INFO L87 Difference]: Start difference. First operand 289 states and 694 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:52:34,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:34,729 INFO L93 Difference]: Finished difference Result 226 states and 521 transitions. [2022-12-14 12:52:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:52:34,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 12:52:34,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:34,730 INFO L225 Difference]: With dead ends: 226 [2022-12-14 12:52:34,730 INFO L226 Difference]: Without dead ends: 226 [2022-12-14 12:52:34,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:52:34,731 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:34,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 6 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:52:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-12-14 12:52:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-12-14 12:52:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 223 states have (on average 2.336322869955157) internal successors, (521), 225 states have internal predecessors, (521), 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) [2022-12-14 12:52:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 521 transitions. [2022-12-14 12:52:34,738 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 521 transitions. Word has length 5 [2022-12-14 12:52:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:34,739 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 521 transitions. [2022-12-14 12:52:34,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:52:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 521 transitions. [2022-12-14 12:52:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:52:34,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:34,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:52:34,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 12:52:34,740 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:34,748 INFO L85 PathProgramCache]: Analyzing trace with hash 351943299, now seen corresponding path program 1 times [2022-12-14 12:52:34,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:52:34,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423305347] [2022-12-14 12:52:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:34,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:52:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:34,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:52:34,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423305347] [2022-12-14 12:52:34,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423305347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:34,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:34,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:52:34,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220295796] [2022-12-14 12:52:34,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:34,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:52:34,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:52:34,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:52:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:52:34,813 INFO L87 Difference]: Start difference. First operand 226 states and 521 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:52:34,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:34,835 INFO L93 Difference]: Finished difference Result 163 states and 348 transitions. [2022-12-14 12:52:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:52:34,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 12:52:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:34,837 INFO L225 Difference]: With dead ends: 163 [2022-12-14 12:52:34,837 INFO L226 Difference]: Without dead ends: 163 [2022-12-14 12:52:34,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:52:34,837 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:34,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 6 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:52:34,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-12-14 12:52:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-12-14 12:52:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 161 states have (on average 2.1614906832298137) internal successors, (348), 162 states have internal predecessors, (348), 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) [2022-12-14 12:52:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 348 transitions. [2022-12-14 12:52:34,841 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 348 transitions. Word has length 5 [2022-12-14 12:52:34,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:34,841 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 348 transitions. [2022-12-14 12:52:34,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:52:34,842 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 348 transitions. [2022-12-14 12:52:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 12:52:34,843 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:34,843 INFO L195 NwaCegarLoop]: 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] [2022-12-14 12:52:34,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:52:34,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:34,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:34,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1923113743, now seen corresponding path program 1 times [2022-12-14 12:52:34,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:52:34,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808957344] [2022-12-14 12:52:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:34,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:52:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:34,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:34,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:52:34,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808957344] [2022-12-14 12:52:34,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808957344] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:34,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:34,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:52:34,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660805170] [2022-12-14 12:52:34,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:34,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:52:34,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:52:34,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:52:34,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:34,945 INFO L87 Difference]: Start difference. First operand 163 states and 348 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2022-12-14 12:52:34,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:34,980 INFO L93 Difference]: Finished difference Result 115 states and 188 transitions. [2022-12-14 12:52:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:52:34,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 [2022-12-14 12:52:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:34,981 INFO L225 Difference]: With dead ends: 115 [2022-12-14 12:52:34,981 INFO L226 Difference]: Without dead ends: 115 [2022-12-14 12:52:34,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:34,982 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:34,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:52:34,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-14 12:52:34,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-12-14 12:52:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.663716814159292) internal successors, (188), 114 states have internal predecessors, (188), 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) [2022-12-14 12:52:34,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 188 transitions. [2022-12-14 12:52:34,986 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 188 transitions. Word has length 23 [2022-12-14 12:52:34,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:34,986 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 188 transitions. [2022-12-14 12:52:34,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2022-12-14 12:52:34,987 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 188 transitions. [2022-12-14 12:52:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 12:52:34,987 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:34,988 INFO L195 NwaCegarLoop]: 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] [2022-12-14 12:52:34,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 12:52:34,988 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:34,988 INFO L85 PathProgramCache]: Analyzing trace with hash 569379549, now seen corresponding path program 2 times [2022-12-14 12:52:34,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:52:34,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164102768] [2022-12-14 12:52:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:34,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:52:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:35,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:52:35,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164102768] [2022-12-14 12:52:35,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164102768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:35,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:35,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 12:52:35,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935872082] [2022-12-14 12:52:35,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:35,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 12:52:35,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:52:35,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 12:52:35,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-14 12:52:35,204 INFO L87 Difference]: Start difference. First operand 115 states and 188 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 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) [2022-12-14 12:52:35,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:35,373 INFO L93 Difference]: Finished difference Result 138 states and 222 transitions. [2022-12-14 12:52:35,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 12:52:35,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 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 [2022-12-14 12:52:35,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:35,374 INFO L225 Difference]: With dead ends: 138 [2022-12-14 12:52:35,374 INFO L226 Difference]: Without dead ends: 138 [2022-12-14 12:52:35,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-14 12:52:35,375 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:35,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 59 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:52:35,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-14 12:52:35,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2022-12-14 12:52:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 1.6363636363636365) internal successors, (216), 133 states have internal predecessors, (216), 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) [2022-12-14 12:52:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 216 transitions. [2022-12-14 12:52:35,380 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 216 transitions. Word has length 23 [2022-12-14 12:52:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:35,380 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 216 transitions. [2022-12-14 12:52:35,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 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) [2022-12-14 12:52:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 216 transitions. [2022-12-14 12:52:35,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 12:52:35,381 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:35,381 INFO L195 NwaCegarLoop]: 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] [2022-12-14 12:52:35,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 12:52:35,382 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:35,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:35,382 INFO L85 PathProgramCache]: Analyzing trace with hash 569379506, now seen corresponding path program 1 times [2022-12-14 12:52:35,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:52:35,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799729562] [2022-12-14 12:52:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:35,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:52:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:52:35,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:52:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:52:35,452 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:52:35,452 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:52:35,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-12-14 12:52:35,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-12-14 12:52:35,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-14 12:52:35,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-14 12:52:35,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-12-14 12:52:35,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-12-14 12:52:35,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-14 12:52:35,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-14 12:52:35,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-12-14 12:52:35,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-12-14 12:52:35,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-14 12:52:35,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-14 12:52:35,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 12:52:35,459 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-12-14 12:52:35,462 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 12:52:35,463 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 12:52:35,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 12:52:35 BasicIcfg [2022-12-14 12:52:35,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 12:52:35,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 12:52:35,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 12:52:35,486 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 12:52:35,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:52:30" (3/4) ... [2022-12-14 12:52:35,488 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 12:52:35,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 12:52:35,489 INFO L158 Benchmark]: Toolchain (without parser) took 5734.60ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 80.9MB in the beginning and 129.5MB in the end (delta: -48.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:52:35,489 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:52:35,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.93ms. Allocated memory is still 153.1MB. Free memory was 80.9MB in the beginning and 109.9MB in the end (delta: -29.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 12:52:35,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.51ms. Allocated memory is still 153.1MB. Free memory was 109.9MB in the beginning and 107.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:52:35,489 INFO L158 Benchmark]: Boogie Preprocessor took 20.39ms. Allocated memory is still 153.1MB. Free memory was 107.9MB in the beginning and 106.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:52:35,490 INFO L158 Benchmark]: RCFGBuilder took 339.89ms. Allocated memory is still 153.1MB. Free memory was 106.7MB in the beginning and 91.1MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 12:52:35,490 INFO L158 Benchmark]: TraceAbstraction took 5003.33ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 90.5MB in the beginning and 129.5MB in the end (delta: -39.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:52:35,490 INFO L158 Benchmark]: Witness Printer took 2.69ms. Allocated memory is still 184.5MB. Free memory is still 129.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:52:35,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.93ms. Allocated memory is still 153.1MB. Free memory was 80.9MB in the beginning and 109.9MB in the end (delta: -29.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.51ms. Allocated memory is still 153.1MB. Free memory was 109.9MB in the beginning and 107.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.39ms. Allocated memory is still 153.1MB. Free memory was 107.9MB in the beginning and 106.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 339.89ms. Allocated memory is still 153.1MB. Free memory was 106.7MB in the beginning and 91.1MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5003.33ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 90.5MB in the beginning and 129.5MB in the end (delta: -39.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.69ms. Allocated memory is still 184.5MB. Free memory is still 129.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 111 PlacesBefore, 42 PlacesAfterwards, 105 TransitionsBefore, 35 TransitionsAfterwards, 940 CoEnabledTransitionPairs, 6 FixpointIterations, 67 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 100 TotalNumberOfCompositions, 3275 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1922, independent: 1761, independent conditional: 0, independent unconditional: 1761, dependent: 161, dependent conditional: 0, dependent unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 668, independent: 636, independent conditional: 0, independent unconditional: 636, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 668, independent: 625, independent conditional: 0, independent unconditional: 625, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 80, independent: 33, independent conditional: 0, independent unconditional: 33, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1922, independent: 1125, independent conditional: 0, independent unconditional: 1125, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 668, unknown conditional: 0, unknown unconditional: 668] , Statistics on independence cache: Total cache size (in pairs): 201, Positive cache size: 183, Positive conditional cache size: 0, Positive unconditional cache size: 183, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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 - UnprovableResult [Line: 727]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 727. Possible FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=-1, t1={5:0}, t2={6:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=0, t1={5:0}, t2={6:0}] [L697] 1 data1++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L707] 2 data1+=5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=10, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=4, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L723] 0 \read(t1) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=4, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L700] 1 data2++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L724] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 721]: 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: 722]: 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 5 procedures, 135 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 444 IncrementalHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 42 mSDtfsCounter, 444 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 426 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 12:52:35,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stateful01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:52:37,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:52:37,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:52:37,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:52:37,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:52:37,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:52:37,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:52:37,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:52:37,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:52:37,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:52:37,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:52:37,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:52:37,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:52:37,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:52:37,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:52:37,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:52:37,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:52:37,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:52:37,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:52:37,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:52:37,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:52:37,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:52:37,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:52:37,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:52:37,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:52:37,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:52:37,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:52:37,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:52:37,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:52:37,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:52:37,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:52:37,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:52:37,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:52:37,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:52:37,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:52:37,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:52:37,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:52:37,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:52:37,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:52:37,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:52:37,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:52:37,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 12:52:37,151 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:52:37,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:52:37,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:52:37,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:52:37,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:52:37,152 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:52:37,153 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:52:37,153 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:52:37,153 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:52:37,153 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:52:37,153 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:52:37,154 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:52:37,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 12:52:37,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 12:52:37,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:52:37,155 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:52:37,155 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:52:37,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:52:37,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:52:37,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:52:37,156 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 12:52:37,156 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 12:52:37,156 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 12:52:37,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:52:37,157 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 12:52:37,157 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 12:52:37,157 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 12:52:37,157 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:52:37,157 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:52:37,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:52:37,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 12:52:37,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:52:37,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:52:37,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:52:37,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:52:37,159 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 12:52:37,159 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 12:52:37,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:52:37,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 12:52:37,159 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2022-12-14 12:52:37,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:52:37,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:52:37,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:52:37,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:52:37,415 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:52:37,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread/stateful01-1.i [2022-12-14 12:52:39,998 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:52:40,156 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:52:40,156 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/sv-benchmarks/c/pthread/stateful01-1.i [2022-12-14 12:52:40,166 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/data/b2fc5efbf/0a76f08c4f6f40c0a3c0c97d83b61400/FLAGe28e909bf [2022-12-14 12:52:40,177 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/data/b2fc5efbf/0a76f08c4f6f40c0a3c0c97d83b61400 [2022-12-14 12:52:40,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:52:40,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:52:40,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:52:40,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:52:40,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:52:40,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e257a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40, skipping insertion in model container [2022-12-14 12:52:40,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:52:40,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:52:40,430 WARN L237 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_1896c264-2712-4d26-9252-121a80c80376/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-12-14 12:52:40,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:52:40,445 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:52:40,474 WARN L237 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_1896c264-2712-4d26-9252-121a80c80376/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-12-14 12:52:40,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:52:40,504 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:52:40,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40 WrapperNode [2022-12-14 12:52:40,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:52:40,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:52:40,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:52:40,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:52:40,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,542 INFO L138 Inliner]: procedures = 172, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2022-12-14 12:52:40,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:52:40,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:52:40,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:52:40,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:52:40,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,564 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:52:40,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:52:40,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:52:40,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:52:40,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40" (1/1) ... [2022-12-14 12:52:40,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:52:40,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:52:40,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:52:40,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:52:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 12:52:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 12:52:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 12:52:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 12:52:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 12:52:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 12:52:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:52:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:52:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:52:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 12:52:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 12:52:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-14 12:52:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:52:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:52:40,630 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 12:52:40,739 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:52:40,741 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:52:40,989 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:52:40,996 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:52:40,996 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 12:52:40,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:52:40 BoogieIcfgContainer [2022-12-14 12:52:40,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:52:41,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:52:41,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:52:41,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:52:41,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:52:40" (1/3) ... [2022-12-14 12:52:41,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0b6cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:52:41, skipping insertion in model container [2022-12-14 12:52:41,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:52:40" (2/3) ... [2022-12-14 12:52:41,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0b6cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:52:41, skipping insertion in model container [2022-12-14 12:52:41,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:52:40" (3/3) ... [2022-12-14 12:52:41,007 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-12-14 12:52:41,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:52:41,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-14 12:52:41,024 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 12:52:41,084 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 12:52:41,115 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:52:41,129 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 106 transitions, 228 flow [2022-12-14 12:52:41,132 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 106 transitions, 228 flow [2022-12-14 12:52:41,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 106 transitions, 228 flow [2022-12-14 12:52:41,178 INFO L130 PetriNetUnfolder]: 1/104 cut-off events. [2022-12-14 12:52:41,178 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 12:52:41,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 104 events. 1/104 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-12-14 12:52:41,183 INFO L119 LiptonReduction]: Number of co-enabled transitions 940 [2022-12-14 12:52:53,539 INFO L134 LiptonReduction]: Checked pairs total: 3677 [2022-12-14 12:52:53,539 INFO L136 LiptonReduction]: Total number of compositions: 95 [2022-12-14 12:52:53,545 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 35 transitions, 86 flow [2022-12-14 12:52:53,580 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 323 states, 313 states have (on average 2.415335463258786) internal successors, (756), 322 states have internal predecessors, (756), 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) [2022-12-14 12:52:53,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:52:53,608 INFO L357 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7c732710, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:52:53,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-14 12:52:53,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 323 states, 313 states have (on average 2.415335463258786) internal successors, (756), 322 states have internal predecessors, (756), 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) [2022-12-14 12:52:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 12:52:53,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:53,615 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 12:52:53,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:53,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:53,619 INFO L85 PathProgramCache]: Analyzing trace with hash 370, now seen corresponding path program 1 times [2022-12-14 12:52:53,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:52:53,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554854511] [2022-12-14 12:52:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:53,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:53,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:52:53,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:52:53,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 12:52:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:53,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 12:52:53,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:52:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:53,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:52:53,686 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:52:53,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554854511] [2022-12-14 12:52:53,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554854511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:53,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:53,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 12:52:53,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838118105] [2022-12-14 12:52:53,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:53,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:52:53,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:52:53,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:52:53,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:52:53,713 INFO L87 Difference]: Start difference. First operand has 323 states, 313 states have (on average 2.415335463258786) internal successors, (756), 322 states have internal predecessors, (756), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-12-14 12:52:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:53,799 INFO L93 Difference]: Finished difference Result 321 states and 754 transitions. [2022-12-14 12:52:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:52:53,801 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-12-14 12:52:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:53,813 INFO L225 Difference]: With dead ends: 321 [2022-12-14 12:52:53,813 INFO L226 Difference]: Without dead ends: 321 [2022-12-14 12:52:53,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:52:53,817 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:53,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:52:53,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-12-14 12:52:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-12-14 12:52:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 313 states have (on average 2.4089456869009584) internal successors, (754), 320 states have internal predecessors, (754), 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) [2022-12-14 12:52:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 754 transitions. [2022-12-14 12:52:53,869 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 754 transitions. Word has length 1 [2022-12-14 12:52:53,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:53,869 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 754 transitions. [2022-12-14 12:52:53,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-12-14 12:52:53,870 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 754 transitions. [2022-12-14 12:52:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:52:53,870 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:53,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:52:53,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:52:54,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:54,072 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:54,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:54,074 INFO L85 PathProgramCache]: Analyzing trace with hash 364359, now seen corresponding path program 1 times [2022-12-14 12:52:54,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:52:54,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042082357] [2022-12-14 12:52:54,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:54,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:54,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:52:54,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:52:54,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 12:52:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:54,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:52:54,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:52:54,366 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 12:52:54,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-14 12:52:54,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:54,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:52:54,385 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:52:54,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042082357] [2022-12-14 12:52:54,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042082357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:54,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:54,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:52:54,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100177847] [2022-12-14 12:52:54,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:54,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:52:54,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:52:54,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:52:54,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:54,388 INFO L87 Difference]: Start difference. First operand 321 states and 754 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 12:52:54,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:54,444 INFO L93 Difference]: Finished difference Result 305 states and 724 transitions. [2022-12-14 12:52:54,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:52:54,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-12-14 12:52:54,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:54,447 INFO L225 Difference]: With dead ends: 305 [2022-12-14 12:52:54,447 INFO L226 Difference]: Without dead ends: 305 [2022-12-14 12:52:54,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:54,449 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:54,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 6 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:52:54,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-12-14 12:52:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-12-14 12:52:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 299 states have (on average 2.4214046822742477) internal successors, (724), 304 states have internal predecessors, (724), 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) [2022-12-14 12:52:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 724 transitions. [2022-12-14 12:52:54,472 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 724 transitions. Word has length 3 [2022-12-14 12:52:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:54,472 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 724 transitions. [2022-12-14 12:52:54,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 12:52:54,472 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 724 transitions. [2022-12-14 12:52:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:52:54,472 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:54,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:52:54,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 12:52:54,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:54,675 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:54,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:54,676 INFO L85 PathProgramCache]: Analyzing trace with hash 364361, now seen corresponding path program 1 times [2022-12-14 12:52:54,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:52:54,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030938996] [2022-12-14 12:52:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:54,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:54,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:52:54,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:52:54,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 12:52:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:54,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:52:54,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:52:54,849 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 12:52:54,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-12-14 12:52:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:54,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:52:54,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:52:54,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030938996] [2022-12-14 12:52:54,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030938996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:54,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:54,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:52:54,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080933651] [2022-12-14 12:52:54,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:54,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:52:54,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:52:54,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:52:54,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:54,862 INFO L87 Difference]: Start difference. First operand 305 states and 724 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 12:52:54,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:54,909 INFO L93 Difference]: Finished difference Result 289 states and 694 transitions. [2022-12-14 12:52:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:52:54,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-12-14 12:52:54,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:54,911 INFO L225 Difference]: With dead ends: 289 [2022-12-14 12:52:54,911 INFO L226 Difference]: Without dead ends: 289 [2022-12-14 12:52:54,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:54,913 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:54,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 6 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:52:54,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-12-14 12:52:54,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-12-14 12:52:54,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 285 states have (on average 2.4350877192982456) internal successors, (694), 288 states have internal predecessors, (694), 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) [2022-12-14 12:52:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 694 transitions. [2022-12-14 12:52:54,930 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 694 transitions. Word has length 3 [2022-12-14 12:52:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:54,930 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 694 transitions. [2022-12-14 12:52:54,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 12:52:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 694 transitions. [2022-12-14 12:52:54,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:52:54,931 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:54,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:52:54,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 12:52:55,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:55,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:55,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:55,134 INFO L85 PathProgramCache]: Analyzing trace with hash 350157822, now seen corresponding path program 1 times [2022-12-14 12:52:55,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:52:55,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658442367] [2022-12-14 12:52:55,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:55,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:55,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:52:55,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:52:55,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 12:52:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:55,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:52:55,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:52:55,322 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 12:52:55,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-14 12:52:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:55,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:52:55,345 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:52:55,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658442367] [2022-12-14 12:52:55,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658442367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:55,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:55,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:52:55,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026150455] [2022-12-14 12:52:55,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:55,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:52:55,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:52:55,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:52:55,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:55,346 INFO L87 Difference]: Start difference. First operand 289 states and 694 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:52:55,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:55,394 INFO L93 Difference]: Finished difference Result 226 states and 521 transitions. [2022-12-14 12:52:55,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:52:55,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 12:52:55,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:55,395 INFO L225 Difference]: With dead ends: 226 [2022-12-14 12:52:55,395 INFO L226 Difference]: Without dead ends: 226 [2022-12-14 12:52:55,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:55,396 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:55,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 6 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:52:55,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-12-14 12:52:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-12-14 12:52:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 223 states have (on average 2.336322869955157) internal successors, (521), 225 states have internal predecessors, (521), 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) [2022-12-14 12:52:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 521 transitions. [2022-12-14 12:52:55,403 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 521 transitions. Word has length 5 [2022-12-14 12:52:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:55,403 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 521 transitions. [2022-12-14 12:52:55,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:52:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 521 transitions. [2022-12-14 12:52:55,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:52:55,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:55,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:52:55,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 12:52:55,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:55,605 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:55,605 INFO L85 PathProgramCache]: Analyzing trace with hash 350157823, now seen corresponding path program 1 times [2022-12-14 12:52:55,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:52:55,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351674704] [2022-12-14 12:52:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:55,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:55,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:52:55,607 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:52:55,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 12:52:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:55,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:52:55,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:52:55,685 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 12:52:55,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 12:52:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:55,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:52:55,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:52:55,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351674704] [2022-12-14 12:52:55,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351674704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:55,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:55,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:52:55,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033886417] [2022-12-14 12:52:55,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:55,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:52:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:52:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:52:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:55,717 INFO L87 Difference]: Start difference. First operand 226 states and 521 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:52:55,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:55,752 INFO L93 Difference]: Finished difference Result 163 states and 348 transitions. [2022-12-14 12:52:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:52:55,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 12:52:55,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:55,753 INFO L225 Difference]: With dead ends: 163 [2022-12-14 12:52:55,753 INFO L226 Difference]: Without dead ends: 163 [2022-12-14 12:52:55,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:55,754 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:55,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 6 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:52:55,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-12-14 12:52:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-12-14 12:52:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 161 states have (on average 2.1614906832298137) internal successors, (348), 162 states have internal predecessors, (348), 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) [2022-12-14 12:52:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 348 transitions. [2022-12-14 12:52:55,758 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 348 transitions. Word has length 5 [2022-12-14 12:52:55,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:55,759 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 348 transitions. [2022-12-14 12:52:55,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:52:55,759 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 348 transitions. [2022-12-14 12:52:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 12:52:55,759 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:55,760 INFO L195 NwaCegarLoop]: 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] [2022-12-14 12:52:55,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 12:52:55,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:55,961 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:55,962 INFO L85 PathProgramCache]: Analyzing trace with hash -613612118, now seen corresponding path program 1 times [2022-12-14 12:52:55,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:52:55,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144760762] [2022-12-14 12:52:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:55,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:55,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:52:55,967 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:52:55,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 12:52:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:56,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:52:56,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:52:56,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-12-14 12:52:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:56,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:52:56,146 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:52:56,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144760762] [2022-12-14 12:52:56,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144760762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:56,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:52:56,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:52:56,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739365514] [2022-12-14 12:52:56,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:56,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:52:56,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:52:56,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:52:56,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:56,148 INFO L87 Difference]: Start difference. First operand 163 states and 348 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2022-12-14 12:52:56,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:56,218 INFO L93 Difference]: Finished difference Result 115 states and 188 transitions. [2022-12-14 12:52:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:52:56,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 [2022-12-14 12:52:56,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:56,219 INFO L225 Difference]: With dead ends: 115 [2022-12-14 12:52:56,219 INFO L226 Difference]: Without dead ends: 115 [2022-12-14 12:52:56,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:52:56,220 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:56,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:52:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-14 12:52:56,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-12-14 12:52:56,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.663716814159292) internal successors, (188), 114 states have internal predecessors, (188), 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) [2022-12-14 12:52:56,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 188 transitions. [2022-12-14 12:52:56,225 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 188 transitions. Word has length 23 [2022-12-14 12:52:56,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:56,225 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 188 transitions. [2022-12-14 12:52:56,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2022-12-14 12:52:56,225 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 188 transitions. [2022-12-14 12:52:56,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 12:52:56,227 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:56,227 INFO L195 NwaCegarLoop]: 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] [2022-12-14 12:52:56,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 12:52:56,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:56,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 12:52:56,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:56,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1100091220, now seen corresponding path program 2 times [2022-12-14 12:52:56,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:52:56,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317510056] [2022-12-14 12:52:56,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:52:56,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:56,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:52:56,431 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:52:56,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 12:52:56,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-14 12:52:56,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-12-14 12:52:56,550 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:52:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:52:56,624 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 12:52:56,624 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:52:56,625 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-12-14 12:52:56,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-12-14 12:52:56,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-14 12:52:56,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-14 12:52:56,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-12-14 12:52:56,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-12-14 12:52:56,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-14 12:52:56,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-14 12:52:56,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-12-14 12:52:56,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-12-14 12:52:56,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-14 12:52:56,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-14 12:52:56,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 12:52:56,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:52:56,833 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-12-14 12:52:56,845 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 12:52:56,845 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 12:52:56,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 12:52:56 BasicIcfg [2022-12-14 12:52:56,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 12:52:56,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 12:52:56,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 12:52:56,893 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 12:52:56,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:52:40" (3/4) ... [2022-12-14 12:52:56,895 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 12:52:56,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 12:52:56,895 INFO L158 Benchmark]: Toolchain (without parser) took 16715.17ms. Allocated memory is still 77.6MB. Free memory was 55.1MB in the beginning and 31.5MB in the end (delta: 23.5MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2022-12-14 12:52:56,896 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:52:56,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.47ms. Allocated memory is still 77.6MB. Free memory was 54.9MB in the beginning and 52.4MB in the end (delta: 2.5MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2022-12-14 12:52:56,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.09ms. Allocated memory is still 77.6MB. Free memory was 52.4MB in the beginning and 50.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:52:56,896 INFO L158 Benchmark]: Boogie Preprocessor took 24.87ms. Allocated memory is still 77.6MB. Free memory was 50.2MB in the beginning and 48.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:52:56,896 INFO L158 Benchmark]: RCFGBuilder took 429.95ms. Allocated memory is still 77.6MB. Free memory was 48.5MB in the beginning and 55.3MB in the end (delta: -6.8MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-12-14 12:52:56,896 INFO L158 Benchmark]: TraceAbstraction took 15891.64ms. Allocated memory is still 77.6MB. Free memory was 54.4MB in the beginning and 32.1MB in the end (delta: 22.4MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2022-12-14 12:52:56,897 INFO L158 Benchmark]: Witness Printer took 2.54ms. Allocated memory is still 77.6MB. Free memory was 32.1MB in the beginning and 31.5MB in the end (delta: 527.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:52:56,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.47ms. Allocated memory is still 77.6MB. Free memory was 54.9MB in the beginning and 52.4MB in the end (delta: 2.5MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.09ms. Allocated memory is still 77.6MB. Free memory was 52.4MB in the beginning and 50.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.87ms. Allocated memory is still 77.6MB. Free memory was 50.2MB in the beginning and 48.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 429.95ms. Allocated memory is still 77.6MB. Free memory was 48.5MB in the beginning and 55.3MB in the end (delta: -6.8MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * TraceAbstraction took 15891.64ms. Allocated memory is still 77.6MB. Free memory was 54.4MB in the beginning and 32.1MB in the end (delta: 22.4MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * Witness Printer took 2.54ms. Allocated memory is still 77.6MB. Free memory was 32.1MB in the beginning and 31.5MB in the end (delta: 527.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.4s, 112 PlacesBefore, 42 PlacesAfterwards, 106 TransitionsBefore, 35 TransitionsAfterwards, 940 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 95 TotalNumberOfCompositions, 3677 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2158, independent: 1971, independent conditional: 0, independent unconditional: 1971, dependent: 187, dependent conditional: 0, dependent unconditional: 187, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 686, independent: 654, independent conditional: 0, independent unconditional: 654, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 686, independent: 643, independent conditional: 0, independent unconditional: 643, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 88, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2158, independent: 1317, independent conditional: 0, independent unconditional: 1317, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 686, unknown conditional: 0, unknown unconditional: 686] , Statistics on independence cache: Total cache size (in pairs): 209, Positive cache size: 191, Positive conditional cache size: 0, Positive unconditional cache size: 191, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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 - UnprovableResult [Line: 727]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 727. Possible FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=0, t1={7:0}, t2={5:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=1, t1={7:0}, t2={5:0}] [L697] 1 data1++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L723] 0 \read(t1) VAL [\read(t1)=0, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}, t1={7:0}, t2={5:0}] [L707] 2 data1+=5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=10, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=4, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L700] 1 data2++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={7:0}, t2={5:0}] [L724] 0 \read(t2) VAL [\read(t2)=1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={7:0}, t2={5:0}] [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={7:0}, t2={5:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={7:0}, t2={5:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 721]: 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: 722]: 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 5 procedures, 136 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 15.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 96 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 146 IncrementalHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 34 mSDtfsCounter, 146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 4 NumberOfNonLiveVariables, 424 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 could not prove your program: unable to determine feasibility of some traces [2022-12-14 12:52:56,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1896c264-2712-4d26-9252-121a80c80376/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample