./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 4e7fbc69 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_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stateful01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 15:31:57,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:31:57,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:31:57,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:31:57,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:31:57,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:31:57,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:31:57,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:31:57,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:31:57,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:31:57,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:31:57,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:31:57,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:31:57,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:31:57,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:31:57,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:31:57,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:31:57,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:31:57,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:31:57,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:31:57,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:31:57,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:31:57,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:31:57,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:31:57,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:31:57,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:31:57,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:31:57,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:31:57,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:31:57,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:31:57,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:31:57,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:31:57,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:31:57,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:31:57,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:31:57,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:31:57,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:31:57,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:31:57,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:31:57,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:31:57,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:31:57,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 15:31:57,848 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:31:57,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:31:57,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:31:57,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:31:57,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:31:57,851 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:31:57,851 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:31:57,851 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:31:57,852 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:31:57,852 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:31:57,853 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:31:57,853 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:31:57,854 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:31:57,854 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:31:57,854 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:31:57,855 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:31:57,855 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:31:57,855 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:31:57,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 15:31:57,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 15:31:57,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:31:57,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:31:57,858 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:31:57,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:31:57,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:31:57,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:31:57,859 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 15:31:57,860 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 15:31:57,860 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 15:31:57,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:31:57,861 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:31:57,861 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:31:57,861 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:31:57,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:31:57,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:31:57,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:31:57,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:31:57,862 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:31:57,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:31:57,863 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:31:57,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:31:57,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:31:57,864 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_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2022-11-23 15:31:58,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:31:58,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:31:58,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:31:58,197 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:31:58,198 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:31:58,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/pthread/stateful01-1.i [2022-11-23 15:32:01,285 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:32:01,513 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:32:01,514 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/sv-benchmarks/c/pthread/stateful01-1.i [2022-11-23 15:32:01,532 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/data/b02b800b1/456c3d3e02de4371bb11f4d6d84d5bb0/FLAG4ca83d5cb [2022-11-23 15:32:01,557 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/data/b02b800b1/456c3d3e02de4371bb11f4d6d84d5bb0 [2022-11-23 15:32:01,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:32:01,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:32:01,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:32:01,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:32:01,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:32:01,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:32:01" (1/1) ... [2022-11-23 15:32:01,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff4e6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:01, skipping insertion in model container [2022-11-23 15:32:01,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:32:01" (1/1) ... [2022-11-23 15:32:01,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:32:01,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:32:02,023 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_0f1268c6-8c06-4772-9600-69c030acda36/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-11-23 15:32:02,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:32:02,042 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:32:02,082 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_0f1268c6-8c06-4772-9600-69c030acda36/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-11-23 15:32:02,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:32:02,115 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:32:02,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02 WrapperNode [2022-11-23 15:32:02,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:32:02,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:32:02,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:32:02,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:32:02,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02" (1/1) ... [2022-11-23 15:32:02,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02" (1/1) ... [2022-11-23 15:32:02,176 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-11-23 15:32:02,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:32:02,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:32:02,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:32:02,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:32:02,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02" (1/1) ... [2022-11-23 15:32:02,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02" (1/1) ... [2022-11-23 15:32:02,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02" (1/1) ... [2022-11-23 15:32:02,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02" (1/1) ... [2022-11-23 15:32:02,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02" (1/1) ... [2022-11-23 15:32:02,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02" (1/1) ... [2022-11-23 15:32:02,215 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02" (1/1) ... [2022-11-23 15:32:02,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02" (1/1) ... [2022-11-23 15:32:02,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:32:02,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:32:02,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:32:02,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:32:02,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02" (1/1) ... [2022-11-23 15:32:02,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:32:02,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:32:02,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:32:02,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:32:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:32:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 15:32:02,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 15:32:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 15:32:02,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 15:32:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:32:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 15:32:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:32:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:32:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:32:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:32:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:32:02,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:32:02,366 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 15:32:02,590 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:32:02,593 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:32:02,977 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:32:02,985 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:32:02,992 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:32:02,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:32:02 BoogieIcfgContainer [2022-11-23 15:32:02,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:32:02,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:32:03,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:32:03,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:32:03,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:32:01" (1/3) ... [2022-11-23 15:32:03,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f45f27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:32:03, skipping insertion in model container [2022-11-23 15:32:03,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:02" (2/3) ... [2022-11-23 15:32:03,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f45f27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:32:03, skipping insertion in model container [2022-11-23 15:32:03,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:32:02" (3/3) ... [2022-11-23 15:32:03,011 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-11-23 15:32:03,031 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:32:03,031 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-23 15:32:03,032 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 15:32:03,142 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 15:32:03,177 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 15:32:03,193 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 105 transitions, 226 flow [2022-11-23 15:32:03,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 105 transitions, 226 flow [2022-11-23 15:32:03,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 105 transitions, 226 flow [2022-11-23 15:32:03,250 INFO L130 PetriNetUnfolder]: 1/103 cut-off events. [2022-11-23 15:32:03,251 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 15:32:03,254 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. [2022-11-23 15:32:03,256 INFO L119 LiptonReduction]: Number of co-enabled transitions 940 [2022-11-23 15:32:08,684 INFO L134 LiptonReduction]: Checked pairs total: 3311 [2022-11-23 15:32:08,685 INFO L136 LiptonReduction]: Total number of compositions: 98 [2022-11-23 15:32:08,693 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 35 transitions, 86 flow [2022-11-23 15:32:08,735 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) [2022-11-23 15:32:08,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:32:08,760 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;@ddc7ba8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:32:08,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-23 15:32:08,764 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) [2022-11-23 15:32:08,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-23 15:32:08,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:08,770 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-23 15:32:08,770 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)] === [2022-11-23 15:32:08,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:08,776 INFO L85 PathProgramCache]: Analyzing trace with hash 371, now seen corresponding path program 1 times [2022-11-23 15:32:08,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:32:08,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577891576] [2022-11-23 15:32:08,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:08,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:32:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:08,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:08,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:32:08,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577891576] [2022-11-23 15:32:08,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577891576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:08,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:08,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 15:32:08,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912997394] [2022-11-23 15:32:08,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:08,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:32:08,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:32:08,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:32:08,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:32:08,933 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) [2022-11-23 15:32:09,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:09,031 INFO L93 Difference]: Finished difference Result 321 states and 754 transitions. [2022-11-23 15:32:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:32:09,033 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 [2022-11-23 15:32:09,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:09,055 INFO L225 Difference]: With dead ends: 321 [2022-11-23 15:32:09,056 INFO L226 Difference]: Without dead ends: 321 [2022-11-23 15:32:09,057 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 [2022-11-23 15:32:09,063 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 [2022-11-23 15:32:09,069 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] [2022-11-23 15:32:09,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-23 15:32:09,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-11-23 15:32:09,147 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) [2022-11-23 15:32:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 754 transitions. [2022-11-23 15:32:09,151 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 754 transitions. Word has length 1 [2022-11-23 15:32:09,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:09,152 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 754 transitions. [2022-11-23 15:32:09,152 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) [2022-11-23 15:32:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 754 transitions. [2022-11-23 15:32:09,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:32:09,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:09,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:32:09,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:32:09,154 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)] === [2022-11-23 15:32:09,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash 365256, now seen corresponding path program 1 times [2022-11-23 15:32:09,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:32:09,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080381707] [2022-11-23 15:32:09,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:09,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:32:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:09,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:32:09,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080381707] [2022-11-23 15:32:09,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080381707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:09,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:09,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:32:09,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551620368] [2022-11-23 15:32:09,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:09,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:32:09,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:32:09,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:32:09,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:32:09,380 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) [2022-11-23 15:32:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:09,427 INFO L93 Difference]: Finished difference Result 305 states and 724 transitions. [2022-11-23 15:32:09,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:32:09,428 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 [2022-11-23 15:32:09,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:09,430 INFO L225 Difference]: With dead ends: 305 [2022-11-23 15:32:09,430 INFO L226 Difference]: Without dead ends: 305 [2022-11-23 15:32:09,431 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 [2022-11-23 15:32:09,432 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 [2022-11-23 15:32:09,432 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] [2022-11-23 15:32:09,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-23 15:32:09,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-11-23 15:32:09,448 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) [2022-11-23 15:32:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 724 transitions. [2022-11-23 15:32:09,451 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 724 transitions. Word has length 3 [2022-11-23 15:32:09,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:09,451 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 724 transitions. [2022-11-23 15:32:09,451 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) [2022-11-23 15:32:09,451 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 724 transitions. [2022-11-23 15:32:09,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:32:09,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:09,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:32:09,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:32:09,452 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)] === [2022-11-23 15:32:09,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:09,453 INFO L85 PathProgramCache]: Analyzing trace with hash 365257, now seen corresponding path program 1 times [2022-11-23 15:32:09,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:32:09,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013163294] [2022-11-23 15:32:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:09,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:32:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:09,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:09,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:32:09,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013163294] [2022-11-23 15:32:09,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013163294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:09,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:09,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:32:09,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53593681] [2022-11-23 15:32:09,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:09,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:32:09,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:32:09,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:32:09,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:32:09,658 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) [2022-11-23 15:32:09,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:09,693 INFO L93 Difference]: Finished difference Result 289 states and 694 transitions. [2022-11-23 15:32:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:32:09,695 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 [2022-11-23 15:32:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:09,697 INFO L225 Difference]: With dead ends: 289 [2022-11-23 15:32:09,699 INFO L226 Difference]: Without dead ends: 289 [2022-11-23 15:32:09,700 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 [2022-11-23 15:32:09,702 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 [2022-11-23 15:32:09,703 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] [2022-11-23 15:32:09,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-23 15:32:09,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-11-23 15:32:09,724 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) [2022-11-23 15:32:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 694 transitions. [2022-11-23 15:32:09,728 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 694 transitions. Word has length 3 [2022-11-23 15:32:09,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:09,729 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 694 transitions. [2022-11-23 15:32:09,729 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) [2022-11-23 15:32:09,730 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 694 transitions. [2022-11-23 15:32:09,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:32:09,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:09,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:32:09,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:32:09,733 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)] === [2022-11-23 15:32:09,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:09,734 INFO L85 PathProgramCache]: Analyzing trace with hash 351017854, now seen corresponding path program 1 times [2022-11-23 15:32:09,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:32:09,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070880411] [2022-11-23 15:32:09,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:09,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:32:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:09,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:32:09,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070880411] [2022-11-23 15:32:09,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070880411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:09,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:09,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:32:09,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442842325] [2022-11-23 15:32:09,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:09,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:32:09,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:32:09,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:32:09,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:32:09,926 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) [2022-11-23 15:32:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:09,970 INFO L93 Difference]: Finished difference Result 226 states and 521 transitions. [2022-11-23 15:32:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:32:09,971 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 [2022-11-23 15:32:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:09,973 INFO L225 Difference]: With dead ends: 226 [2022-11-23 15:32:09,974 INFO L226 Difference]: Without dead ends: 226 [2022-11-23 15:32:09,976 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 [2022-11-23 15:32:09,977 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 [2022-11-23 15:32:09,979 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] [2022-11-23 15:32:09,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-23 15:32:09,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-11-23 15:32:10,004 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) [2022-11-23 15:32:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 521 transitions. [2022-11-23 15:32:10,006 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 521 transitions. Word has length 5 [2022-11-23 15:32:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:10,007 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 521 transitions. [2022-11-23 15:32:10,007 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) [2022-11-23 15:32:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 521 transitions. [2022-11-23 15:32:10,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:32:10,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:10,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:32:10,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:32:10,010 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)] === [2022-11-23 15:32:10,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:10,012 INFO L85 PathProgramCache]: Analyzing trace with hash 351017855, now seen corresponding path program 1 times [2022-11-23 15:32:10,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:32:10,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321225589] [2022-11-23 15:32:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:10,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:32:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:10,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:32:10,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321225589] [2022-11-23 15:32:10,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321225589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:10,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:10,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:32:10,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872857431] [2022-11-23 15:32:10,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:10,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:32:10,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:32:10,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:32:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:32:10,164 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) [2022-11-23 15:32:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:10,202 INFO L93 Difference]: Finished difference Result 163 states and 348 transitions. [2022-11-23 15:32:10,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:32:10,204 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 [2022-11-23 15:32:10,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:10,205 INFO L225 Difference]: With dead ends: 163 [2022-11-23 15:32:10,205 INFO L226 Difference]: Without dead ends: 163 [2022-11-23 15:32:10,205 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 [2022-11-23 15:32:10,207 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 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, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:32:10,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 6 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:32:10,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-23 15:32:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-23 15:32:10,218 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) [2022-11-23 15:32:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 348 transitions. [2022-11-23 15:32:10,219 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 348 transitions. Word has length 5 [2022-11-23 15:32:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:10,219 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 348 transitions. [2022-11-23 15:32:10,220 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) [2022-11-23 15:32:10,220 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 348 transitions. [2022-11-23 15:32:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 15:32:10,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:10,223 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] [2022-11-23 15:32:10,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:32:10,224 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)] === [2022-11-23 15:32:10,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:10,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1701045054, now seen corresponding path program 1 times [2022-11-23 15:32:10,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:32:10,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709621000] [2022-11-23 15:32:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:10,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:32:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:32:10,305 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:32:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:32:10,388 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:32:10,389 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:32:10,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-11-23 15:32:10,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-23 15:32:10,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-23 15:32:10,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-23 15:32:10,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-23 15:32:10,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-23 15:32:10,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-23 15:32:10,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-23 15:32:10,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-23 15:32:10,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-11-23 15:32:10,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-11-23 15:32:10,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-23 15:32:10,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:32:10,397 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-23 15:32:10,402 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 15:32:10,403 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:32:10,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:32:10 BasicIcfg [2022-11-23 15:32:10,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:32:10,443 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:32:10,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:32:10,444 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:32:10,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:32:02" (3/4) ... [2022-11-23 15:32:10,448 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:32:10,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:32:10,448 INFO L158 Benchmark]: Toolchain (without parser) took 8886.54ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 99.3MB in the beginning and 74.8MB in the end (delta: 24.5MB). Peak memory consumption was 83.7MB. Max. memory is 16.1GB. [2022-11-23 15:32:10,449 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory was 59.5MB in the beginning and 59.4MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:32:10,449 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.81ms. Allocated memory is still 144.7MB. Free memory was 98.8MB in the beginning and 79.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 15:32:10,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.25ms. Allocated memory is still 144.7MB. Free memory was 79.4MB in the beginning and 77.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:32:10,450 INFO L158 Benchmark]: Boogie Preprocessor took 41.13ms. Allocated memory is still 144.7MB. Free memory was 77.4MB in the beginning and 75.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:32:10,450 INFO L158 Benchmark]: RCFGBuilder took 776.91ms. Allocated memory is still 144.7MB. Free memory was 75.8MB in the beginning and 104.4MB in the end (delta: -28.6MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-11-23 15:32:10,451 INFO L158 Benchmark]: TraceAbstraction took 7443.54ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 104.4MB in the beginning and 74.8MB in the end (delta: 29.6MB). Peak memory consumption was 86.0MB. Max. memory is 16.1GB. [2022-11-23 15:32:10,451 INFO L158 Benchmark]: Witness Printer took 4.57ms. Allocated memory is still 201.3MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:32:10,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory was 59.5MB in the beginning and 59.4MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 552.81ms. Allocated memory is still 144.7MB. Free memory was 98.8MB in the beginning and 79.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.25ms. Allocated memory is still 144.7MB. Free memory was 79.4MB in the beginning and 77.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.13ms. Allocated memory is still 144.7MB. Free memory was 77.4MB in the beginning and 75.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 776.91ms. Allocated memory is still 144.7MB. Free memory was 75.8MB in the beginning and 104.4MB in the end (delta: -28.6MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * TraceAbstraction took 7443.54ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 104.4MB in the beginning and 74.8MB in the end (delta: 29.6MB). Peak memory consumption was 86.0MB. Max. memory is 16.1GB. * Witness Printer took 4.57ms. Allocated memory is still 201.3MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 111 PlacesBefore, 42 PlacesAfterwards, 105 TransitionsBefore, 35 TransitionsAfterwards, 940 CoEnabledTransitionPairs, 6 FixpointIterations, 65 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 98 TotalNumberOfCompositions, 3311 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1958, independent: 1795, independent conditional: 0, independent unconditional: 1795, dependent: 163, dependent conditional: 0, dependent unconditional: 163, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 679, independent: 647, independent conditional: 0, independent unconditional: 647, 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: 679, independent: 635, independent conditional: 0, independent unconditional: 635, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 113, independent: 29, independent conditional: 0, independent unconditional: 29, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1958, independent: 1148, independent conditional: 0, independent unconditional: 1148, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 679, unknown conditional: 0, unknown unconditional: 679] , Statistics on independence cache: Total cache size (in pairs): 206, Positive cache size: 188, Positive conditional cache size: 0, Positive unconditional cache size: 188, 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 [#in~arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=9, t1={5:0}, t2={6:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [#in~arg={0:0}, #in~arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=10, t1={5:0}, t2={6:0}] [L697] 1 data1++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L723] 0 \read(t1) VAL [#in~arg={0:0}, #in~arg={0:0}, \read(t1)=9, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L700] 1 data2++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [#in~arg={0:0}, #in~arg={0:0}, \read(t1)=9, \result={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L724] 0 \read(t2) VAL [#in~arg={0:0}, #in~arg={0:0}, \read(t2)=10, \result={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L707] 2 data1+=5 VAL [#in~arg={0:0}, #in~arg={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [#in~arg={0:0}, #in~arg={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [#in~arg={0:0}, #in~arg={0:0}, \read(t2)=10, \result={0:0}, \result={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 [#in~arg={0:0}, #in~arg={0:0}, \result={0:0}, \result={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: 7.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 93 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 93 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 109 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 30 mSDtfsCounter, 109 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2022-11-23 15:32:10,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stateful01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 15:32:13,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:32:13,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:32:13,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:32:13,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:32:13,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:32:13,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:32:13,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:32:13,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:32:13,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:32:13,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:32:13,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:32:13,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:32:13,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:32:13,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:32:13,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:32:13,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:32:13,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:32:13,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:32:13,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:32:13,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:32:13,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:32:13,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:32:13,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:32:13,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:32:13,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:32:13,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:32:13,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:32:13,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:32:13,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:32:13,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:32:13,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:32:13,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:32:13,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:32:13,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:32:13,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:32:13,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:32:13,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:32:13,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:32:13,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:32:13,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:32:13,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-23 15:32:13,321 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:32:13,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:32:13,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:32:13,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:32:13,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:32:13,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:32:13,324 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:32:13,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:32:13,324 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:32:13,324 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:32:13,326 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:32:13,326 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:32:13,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 15:32:13,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 15:32:13,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:32:13,328 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:32:13,328 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:32:13,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:32:13,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:32:13,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:32:13,329 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 15:32:13,329 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 15:32:13,329 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 15:32:13,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:32:13,330 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:32:13,330 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:32:13,330 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:32:13,330 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:32:13,331 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:32:13,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:32:13,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:32:13,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:32:13,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:32:13,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:32:13,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:32:13,332 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:32:13,333 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:32:13,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:32:13,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:32:13,333 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_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2022-11-23 15:32:13,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:32:13,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:32:13,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:32:13,758 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:32:13,759 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:32:13,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/pthread/stateful01-1.i [2022-11-23 15:32:17,067 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:32:17,448 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:32:17,448 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/sv-benchmarks/c/pthread/stateful01-1.i [2022-11-23 15:32:17,463 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/data/b0e0d3111/fbd9c1ba1b8a49dab23cdd24f6a54b08/FLAGeca48bc47 [2022-11-23 15:32:17,485 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/data/b0e0d3111/fbd9c1ba1b8a49dab23cdd24f6a54b08 [2022-11-23 15:32:17,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:32:17,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:32:17,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:32:17,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:32:17,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:32:17,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:32:17" (1/1) ... [2022-11-23 15:32:17,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@741d300a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:17, skipping insertion in model container [2022-11-23 15:32:17,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:32:17" (1/1) ... [2022-11-23 15:32:17,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:32:17,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:32:17,898 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_0f1268c6-8c06-4772-9600-69c030acda36/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-11-23 15:32:17,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:32:17,923 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:32:18,012 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_0f1268c6-8c06-4772-9600-69c030acda36/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-11-23 15:32:18,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:32:18,093 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:32:18,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18 WrapperNode [2022-11-23 15:32:18,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:32:18,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:32:18,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:32:18,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:32:18,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18" (1/1) ... [2022-11-23 15:32:18,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18" (1/1) ... [2022-11-23 15:32:18,188 INFO L138 Inliner]: procedures = 172, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2022-11-23 15:32:18,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:32:18,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:32:18,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:32:18,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:32:18,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18" (1/1) ... [2022-11-23 15:32:18,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18" (1/1) ... [2022-11-23 15:32:18,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18" (1/1) ... [2022-11-23 15:32:18,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18" (1/1) ... [2022-11-23 15:32:18,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18" (1/1) ... [2022-11-23 15:32:18,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18" (1/1) ... [2022-11-23 15:32:18,236 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18" (1/1) ... [2022-11-23 15:32:18,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18" (1/1) ... [2022-11-23 15:32:18,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:32:18,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:32:18,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:32:18,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:32:18,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18" (1/1) ... [2022-11-23 15:32:18,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:32:18,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:32:18,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:32:18,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:32:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 15:32:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 15:32:18,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 15:32:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 15:32:18,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 15:32:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 15:32:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:32:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:32:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:32:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 15:32:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:32:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-23 15:32:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:32:18,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:32:18,344 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 15:32:18,533 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:32:18,535 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:32:18,917 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:32:18,925 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:32:18,926 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:32:18,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:32:18 BoogieIcfgContainer [2022-11-23 15:32:18,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:32:18,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:32:18,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:32:18,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:32:18,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:32:17" (1/3) ... [2022-11-23 15:32:18,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c31c6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:32:18, skipping insertion in model container [2022-11-23 15:32:18,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:18" (2/3) ... [2022-11-23 15:32:18,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c31c6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:32:18, skipping insertion in model container [2022-11-23 15:32:18,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:32:18" (3/3) ... [2022-11-23 15:32:18,948 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-11-23 15:32:18,969 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:32:18,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-23 15:32:18,970 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 15:32:19,119 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 15:32:19,173 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 15:32:19,207 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 106 transitions, 228 flow [2022-11-23 15:32:19,213 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 106 transitions, 228 flow [2022-11-23 15:32:19,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 106 transitions, 228 flow [2022-11-23 15:32:19,290 INFO L130 PetriNetUnfolder]: 1/104 cut-off events. [2022-11-23 15:32:19,293 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 15:32:19,297 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. [2022-11-23 15:32:19,299 INFO L119 LiptonReduction]: Number of co-enabled transitions 940 [2022-11-23 15:32:31,769 INFO L134 LiptonReduction]: Checked pairs total: 3275 [2022-11-23 15:32:31,770 INFO L136 LiptonReduction]: Total number of compositions: 99 [2022-11-23 15:32:31,778 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 35 transitions, 86 flow [2022-11-23 15:32:31,830 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) [2022-11-23 15:32:31,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:32:31,857 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;@2f527bb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:32:31,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-23 15:32:31,861 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) [2022-11-23 15:32:31,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-23 15:32:31,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:31,867 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-23 15:32:31,868 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)] === [2022-11-23 15:32:31,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:31,873 INFO L85 PathProgramCache]: Analyzing trace with hash 374, now seen corresponding path program 1 times [2022-11-23 15:32:31,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:32:31,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093564175] [2022-11-23 15:32:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:31,888 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 [2022-11-23 15:32:31,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:32:31,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:32:31,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:31,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 15:32:31,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:32:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:31,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:32:31,969 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:32:31,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093564175] [2022-11-23 15:32:31,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093564175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:31,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:31,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 15:32:31,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191464919] [2022-11-23 15:32:31,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:31,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:32:31,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:32:31,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:32:31,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:32:32,002 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) [2022-11-23 15:32:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:32,105 INFO L93 Difference]: Finished difference Result 321 states and 754 transitions. [2022-11-23 15:32:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:32:32,108 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 [2022-11-23 15:32:32,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:32,122 INFO L225 Difference]: With dead ends: 321 [2022-11-23 15:32:32,122 INFO L226 Difference]: Without dead ends: 321 [2022-11-23 15:32:32,124 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 [2022-11-23 15:32:32,127 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-23 15:32:32,129 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] [2022-11-23 15:32:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-23 15:32:32,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-11-23 15:32:32,248 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) [2022-11-23 15:32:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 754 transitions. [2022-11-23 15:32:32,260 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 754 transitions. Word has length 1 [2022-11-23 15:32:32,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:32,260 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 754 transitions. [2022-11-23 15:32:32,260 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) [2022-11-23 15:32:32,261 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 754 transitions. [2022-11-23 15:32:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:32:32,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:32,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:32:32,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:32,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:32,491 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)] === [2022-11-23 15:32:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:32,492 INFO L85 PathProgramCache]: Analyzing trace with hash 368200, now seen corresponding path program 1 times [2022-11-23 15:32:32,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:32:32,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683001122] [2022-11-23 15:32:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:32,494 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 [2022-11-23 15:32:32,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:32:32,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:32:32,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:32,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:32:32,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:32:32,700 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 15:32:32,701 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 [2022-11-23 15:32:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:32,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:32:32,721 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:32:32,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683001122] [2022-11-23 15:32:32,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683001122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:32,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:32,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:32:32,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408438516] [2022-11-23 15:32:32,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:32,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:32:32,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:32:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:32:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:32:32,726 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) [2022-11-23 15:32:32,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:32,809 INFO L93 Difference]: Finished difference Result 305 states and 724 transitions. [2022-11-23 15:32:32,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:32:32,809 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 [2022-11-23 15:32:32,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:32,813 INFO L225 Difference]: With dead ends: 305 [2022-11-23 15:32:32,813 INFO L226 Difference]: Without dead ends: 305 [2022-11-23 15:32:32,814 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 [2022-11-23 15:32:32,815 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:32:32,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 6 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:32:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-23 15:32:32,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-11-23 15:32:32,843 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) [2022-11-23 15:32:32,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 724 transitions. [2022-11-23 15:32:32,848 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 724 transitions. Word has length 3 [2022-11-23 15:32:32,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:32,848 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 724 transitions. [2022-11-23 15:32:32,849 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) [2022-11-23 15:32:32,849 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 724 transitions. [2022-11-23 15:32:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:32:32,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:32,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:32:32,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 15:32:33,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:33,062 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)] === [2022-11-23 15:32:33,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:33,063 INFO L85 PathProgramCache]: Analyzing trace with hash 368202, now seen corresponding path program 1 times [2022-11-23 15:32:33,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:32:33,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385475331] [2022-11-23 15:32:33,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:33,063 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 [2022-11-23 15:32:33,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:32:33,065 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:32:33,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:33,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:32:33,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:32:33,225 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 15:32:33,226 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 [2022-11-23 15:32:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:33,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:32:33,247 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:32:33,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385475331] [2022-11-23 15:32:33,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385475331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:33,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:33,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:32:33,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259100848] [2022-11-23 15:32:33,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:33,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:32:33,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:32:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:32:33,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:32:33,250 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) [2022-11-23 15:32:33,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:33,316 INFO L93 Difference]: Finished difference Result 289 states and 694 transitions. [2022-11-23 15:32:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:32:33,316 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 [2022-11-23 15:32:33,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:33,319 INFO L225 Difference]: With dead ends: 289 [2022-11-23 15:32:33,319 INFO L226 Difference]: Without dead ends: 289 [2022-11-23 15:32:33,319 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 [2022-11-23 15:32:33,321 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:32:33,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 6 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:32:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-23 15:32:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-11-23 15:32:33,336 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) [2022-11-23 15:32:33,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 694 transitions. [2022-11-23 15:32:33,339 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 694 transitions. Word has length 3 [2022-11-23 15:32:33,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:33,339 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 694 transitions. [2022-11-23 15:32:33,340 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) [2022-11-23 15:32:33,340 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 694 transitions. [2022-11-23 15:32:33,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:32:33,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:33,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:32:33,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 15:32:33,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:33,551 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)] === [2022-11-23 15:32:33,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:33,552 INFO L85 PathProgramCache]: Analyzing trace with hash 353849023, now seen corresponding path program 1 times [2022-11-23 15:32:33,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:32:33,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826295333] [2022-11-23 15:32:33,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:33,553 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 [2022-11-23 15:32:33,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:32:33,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:32:33,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:33,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:32:33,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:32:33,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:33,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-23 15:32:33,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-23 15:32:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:33,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:32:33,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:32:33,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826295333] [2022-11-23 15:32:33,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826295333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:33,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:33,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:32:33,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455003918] [2022-11-23 15:32:33,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:33,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:32:33,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:32:33,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:32:33,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:32:33,744 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) [2022-11-23 15:32:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:33,802 INFO L93 Difference]: Finished difference Result 226 states and 521 transitions. [2022-11-23 15:32:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:32:33,803 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 [2022-11-23 15:32:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:33,805 INFO L225 Difference]: With dead ends: 226 [2022-11-23 15:32:33,805 INFO L226 Difference]: Without dead ends: 226 [2022-11-23 15:32:33,805 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 [2022-11-23 15:32:33,807 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:32:33,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 6 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:32:33,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-23 15:32:33,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-11-23 15:32:33,818 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) [2022-11-23 15:32:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 521 transitions. [2022-11-23 15:32:33,820 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 521 transitions. Word has length 5 [2022-11-23 15:32:33,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:33,821 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 521 transitions. [2022-11-23 15:32:33,821 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) [2022-11-23 15:32:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 521 transitions. [2022-11-23 15:32:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:32:33,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:33,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:32:33,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 15:32:34,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:34,038 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)] === [2022-11-23 15:32:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash 353849025, now seen corresponding path program 1 times [2022-11-23 15:32:34,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:32:34,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4475511] [2022-11-23 15:32:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:34,040 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 [2022-11-23 15:32:34,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:32:34,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:32:34,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:34,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:32:34,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:32:34,161 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 15:32:34,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-23 15:32:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:34,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:32:34,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:32:34,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4475511] [2022-11-23 15:32:34,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4475511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:34,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:34,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:32:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83388388] [2022-11-23 15:32:34,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:34,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:32:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:32:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:32:34,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:32:34,188 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) [2022-11-23 15:32:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:34,248 INFO L93 Difference]: Finished difference Result 163 states and 348 transitions. [2022-11-23 15:32:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:32:34,248 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 [2022-11-23 15:32:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:34,249 INFO L225 Difference]: With dead ends: 163 [2022-11-23 15:32:34,249 INFO L226 Difference]: Without dead ends: 163 [2022-11-23 15:32:34,250 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 [2022-11-23 15:32:34,251 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:32:34,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 6 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:32:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-23 15:32:34,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-23 15:32:34,257 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) [2022-11-23 15:32:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 348 transitions. [2022-11-23 15:32:34,259 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 348 transitions. Word has length 5 [2022-11-23 15:32:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:34,259 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 348 transitions. [2022-11-23 15:32:34,259 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) [2022-11-23 15:32:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 348 transitions. [2022-11-23 15:32:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 15:32:34,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:34,261 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] [2022-11-23 15:32:34,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 15:32:34,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:34,474 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)] === [2022-11-23 15:32:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:34,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1390378928, now seen corresponding path program 1 times [2022-11-23 15:32:34,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:32:34,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136377556] [2022-11-23 15:32:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:34,475 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 [2022-11-23 15:32:34,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:32:34,476 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:32:34,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:34,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:32:34,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:32:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:34,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:32:34,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:32:34,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136377556] [2022-11-23 15:32:34,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136377556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:34,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:34,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 15:32:34,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079218765] [2022-11-23 15:32:34,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:34,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:32:34,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:32:34,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:32:34,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:32:34,868 INFO L87 Difference]: Start difference. First operand 163 states and 348 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) [2022-11-23 15:32:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:35,402 INFO L93 Difference]: Finished difference Result 260 states and 543 transitions. [2022-11-23 15:32:35,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 15:32:35,403 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 [2022-11-23 15:32:35,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:35,406 INFO L225 Difference]: With dead ends: 260 [2022-11-23 15:32:35,406 INFO L226 Difference]: Without dead ends: 260 [2022-11-23 15:32:35,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:32:35,407 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 43 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:32:35,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 100 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:32:35,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-23 15:32:35,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 241. [2022-11-23 15:32:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 239 states have (on average 2.1213389121338913) internal successors, (507), 240 states have internal predecessors, (507), 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) [2022-11-23 15:32:35,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 507 transitions. [2022-11-23 15:32:35,419 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 507 transitions. Word has length 23 [2022-11-23 15:32:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:35,420 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 507 transitions. [2022-11-23 15:32:35,420 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) [2022-11-23 15:32:35,420 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 507 transitions. [2022-11-23 15:32:35,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 15:32:35,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:35,423 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] [2022-11-23 15:32:35,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 15:32:35,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:35,642 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)] === [2022-11-23 15:32:35,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:35,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1390378973, now seen corresponding path program 1 times [2022-11-23 15:32:35,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:32:35,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007147460] [2022-11-23 15:32:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:35,644 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 [2022-11-23 15:32:35,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:32:35,645 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:32:35,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:32:35,795 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:32:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:32:35,940 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 15:32:35,941 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:32:35,942 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-11-23 15:32:35,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-23 15:32:35,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-23 15:32:35,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-23 15:32:35,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-23 15:32:35,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-23 15:32:35,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-23 15:32:35,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-23 15:32:35,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-23 15:32:35,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-11-23 15:32:35,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-11-23 15:32:35,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-23 15:32:35,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 15:32:36,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:32:36,149 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:32:36,153 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 15:32:36,153 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:32:36,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:32:36 BasicIcfg [2022-11-23 15:32:36,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:32:36,209 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:32:36,209 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:32:36,210 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:32:36,210 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:32:18" (3/4) ... [2022-11-23 15:32:36,213 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:32:36,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:32:36,215 INFO L158 Benchmark]: Toolchain (without parser) took 18724.39ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 64.7MB in the beginning and 63.7MB in the end (delta: 1.0MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2022-11-23 15:32:36,215 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 73.4MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:32:36,216 INFO L158 Benchmark]: CACSL2BoogieTranslator took 600.04ms. Allocated memory is still 88.1MB. Free memory was 64.5MB in the beginning and 66.2MB in the end (delta: -1.7MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2022-11-23 15:32:36,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.26ms. Allocated memory is still 88.1MB. Free memory was 66.2MB in the beginning and 63.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:32:36,217 INFO L158 Benchmark]: Boogie Preprocessor took 50.52ms. Allocated memory is still 88.1MB. Free memory was 63.9MB in the beginning and 62.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:32:36,217 INFO L158 Benchmark]: RCFGBuilder took 686.59ms. Allocated memory is still 88.1MB. Free memory was 62.1MB in the beginning and 45.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:32:36,218 INFO L158 Benchmark]: TraceAbstraction took 17278.26ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 44.4MB in the beginning and 64.6MB in the end (delta: -20.2MB). Peak memory consumption was 253.0kB. Max. memory is 16.1GB. [2022-11-23 15:32:36,218 INFO L158 Benchmark]: Witness Printer took 4.62ms. Allocated memory is still 107.0MB. Free memory was 64.6MB in the beginning and 63.7MB in the end (delta: 918.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:32:36,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 73.4MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 600.04ms. Allocated memory is still 88.1MB. Free memory was 64.5MB in the beginning and 66.2MB in the end (delta: -1.7MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.26ms. Allocated memory is still 88.1MB. Free memory was 66.2MB in the beginning and 63.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.52ms. Allocated memory is still 88.1MB. Free memory was 63.9MB in the beginning and 62.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 686.59ms. Allocated memory is still 88.1MB. Free memory was 62.1MB in the beginning and 45.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 17278.26ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 44.4MB in the beginning and 64.6MB in the end (delta: -20.2MB). Peak memory consumption was 253.0kB. Max. memory is 16.1GB. * Witness Printer took 4.62ms. Allocated memory is still 107.0MB. Free memory was 64.6MB in the beginning and 63.7MB in the end (delta: 918.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.6s, 112 PlacesBefore, 42 PlacesAfterwards, 106 TransitionsBefore, 35 TransitionsAfterwards, 940 CoEnabledTransitionPairs, 6 FixpointIterations, 66 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 99 TotalNumberOfCompositions, 3275 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1961, independent: 1800, independent conditional: 0, independent unconditional: 1800, 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: 684, independent: 652, independent conditional: 0, independent unconditional: 652, 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: 684, independent: 641, independent conditional: 0, independent unconditional: 641, 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: 202, independent: 40, independent conditional: 0, independent unconditional: 40, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1961, independent: 1148, independent conditional: 0, independent unconditional: 1148, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 684, unknown conditional: 0, unknown unconditional: 684] , 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 [#in~arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=0, t1={5:0}, t2={7:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [#in~arg={0:0}, #in~arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=1, t1={5:0}, t2={7:0}] [L697] 1 data1++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L723] 0 \read(t1) VAL [#in~arg={0:0}, #in~arg={0:0}, \read(t1)=0, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}, t1={5:0}, t2={7:0}] [L700] 1 data2++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [#in~arg={0:0}, #in~arg={0:0}, \read(t1)=0, \result={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, t1={5:0}, t2={7:0}] [L724] 0 \read(t2) VAL [#in~arg={0:0}, #in~arg={0:0}, \read(t2)=1, \result={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, t1={5:0}, t2={7:0}] [L707] 2 data1+=5 VAL [#in~arg={0:0}, #in~arg={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [#in~arg={0:0}, #in~arg={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [#in~arg={0:0}, #in~arg={0:0}, \read(t2)=1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={7:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [#in~arg={0:0}, #in~arg={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={7:0}] - 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: 17.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 130 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 130 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 86 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 523 IncrementalHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 44 mSDtfsCounter, 523 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 250 SizeOfPredicates, 6 NumberOfNonLiveVariables, 428 ConjunctsInSsa, 28 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 [2022-11-23 15:32:36,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1268c6-8c06-4772-9600-69c030acda36/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample