./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/config/GemCutterReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:19:42,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:19:42,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:19:42,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:19:42,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:19:42,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:19:42,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:19:42,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:19:42,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:19:42,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:19:42,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:19:42,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:19:42,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:19:42,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:19:42,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:19:42,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:19:42,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:19:42,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:19:42,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:19:42,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:19:42,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:19:42,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:19:42,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:19:42,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:19:42,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:19:42,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:19:42,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:19:42,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:19:42,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:19:42,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:19:42,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:19:42,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:19:42,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:19:42,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:19:42,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:19:42,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:19:42,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:19:42,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:19:42,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:19:42,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:19:42,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:19:42,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/config/svcomp-Reach-32bit-GemCutter_Default.epf [2021-11-23 14:19:42,937 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:19:42,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:19:42,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:19:42,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:19:42,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 14:19:42,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 14:19:42,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:19:42,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:19:42,941 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:19:42,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:19:42,942 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 14:19:42,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:19:42,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 14:19:42,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:19:42,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:19:42,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:19:42,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:19:42,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 14:19:42,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:19:42,945 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:19:42,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:19:42,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:19:42,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:19:42,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-11-23 14:19:42,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:19:42,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:19:42,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:19:42,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:19:42,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:19:42,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:19:42,949 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2021-11-23 14:19:42,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:19:42,949 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:19:42,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-11-23 14:19:42,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:19:42,950 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-11-23 14:19:42,951 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-11-23 14:19:42,951 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_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 [2021-11-23 14:19:43,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:19:43,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:19:43,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:19:43,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:19:43,262 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:19:43,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2021-11-23 14:19:43,366 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/data/b977d2a11/32c1fdc586d940ce96c4dcc1b5404a49/FLAG84c1b8a8d [2021-11-23 14:19:43,955 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:19:43,955 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2021-11-23 14:19:43,978 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/data/b977d2a11/32c1fdc586d940ce96c4dcc1b5404a49/FLAG84c1b8a8d [2021-11-23 14:19:44,253 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/data/b977d2a11/32c1fdc586d940ce96c4dcc1b5404a49 [2021-11-23 14:19:44,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:19:44,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:19:44,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:19:44,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:19:44,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:19:44,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:44" (1/1) ... [2021-11-23 14:19:44,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618076b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44, skipping insertion in model container [2021-11-23 14:19:44,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:44" (1/1) ... [2021-11-23 14:19:44,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:19:44,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:19:44,767 WARN L230 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_95755c52-bae2-44cc-991d-f045eabbb607/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2021-11-23 14:19:44,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:19:44,833 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:19:44,899 WARN L230 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_95755c52-bae2-44cc-991d-f045eabbb607/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2021-11-23 14:19:44,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:19:44,974 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:19:44,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44 WrapperNode [2021-11-23 14:19:44,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:19:44,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:19:44,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:19:44,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:19:44,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44" (1/1) ... [2021-11-23 14:19:45,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44" (1/1) ... [2021-11-23 14:19:45,071 INFO L137 Inliner]: procedures = 173, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2021-11-23 14:19:45,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:19:45,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:19:45,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:19:45,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:19:45,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44" (1/1) ... [2021-11-23 14:19:45,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44" (1/1) ... [2021-11-23 14:19:45,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44" (1/1) ... [2021-11-23 14:19:45,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44" (1/1) ... [2021-11-23 14:19:45,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44" (1/1) ... [2021-11-23 14:19:45,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44" (1/1) ... [2021-11-23 14:19:45,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44" (1/1) ... [2021-11-23 14:19:45,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:19:45,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:19:45,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:19:45,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:19:45,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44" (1/1) ... [2021-11-23 14:19:45,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:19:45,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:45,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:19:45,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:19:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 14:19:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 14:19:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-23 14:19:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:19:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 14:19:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-23 14:19:45,238 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-23 14:19:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 14:19:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:19:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:19:45,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:19:45,241 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 14:19:45,423 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:19:45,424 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:19:45,677 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:19:45,691 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:19:45,691 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-23 14:19:45,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:45 BoogieIcfgContainer [2021-11-23 14:19:45,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:19:45,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:19:45,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:19:45,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:19:45,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:19:44" (1/3) ... [2021-11-23 14:19:45,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa28e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:45, skipping insertion in model container [2021-11-23 14:19:45,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:44" (2/3) ... [2021-11-23 14:19:45,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa28e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:45, skipping insertion in model container [2021-11-23 14:19:45,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:45" (3/3) ... [2021-11-23 14:19:45,702 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2021-11-23 14:19:45,707 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 14:19:45,708 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:19:45,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 14:19:45,708 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 14:19:45,750 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,750 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,750 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,750 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,751 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,751 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,751 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,751 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,752 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,752 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,752 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,752 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,752 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,753 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,753 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,753 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,754 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,754 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,754 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,754 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,754 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,755 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,755 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,755 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,755 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,755 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,756 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,756 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,756 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,756 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,757 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,757 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,760 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,760 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,761 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,761 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,761 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,761 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,761 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,762 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:45,768 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-11-23 14:19:45,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-23 14:19:45,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:45,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-23 14:19:45,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2021-11-23 14:19:45,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of1ForFork0 ======== [2021-11-23 14:19:45,874 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:19:45,874 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 14:19:46,081 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:19:46,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:46,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1391821224, now seen corresponding path program 1 times [2021-11-23 14:19:46,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:46,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987172073] [2021-11-23 14:19:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:46,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:46,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:46,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987172073] [2021-11-23 14:19:46,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987172073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:19:46,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:19:46,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:19:46,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105832192] [2021-11-23 14:19:46,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:19:46,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:19:46,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:46,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:19:46,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:19:46,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:46,683 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:46,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:46,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:47,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:19:47,086 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:19:47,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:47,090 INFO L85 PathProgramCache]: Analyzing trace with hash 582229803, now seen corresponding path program 1 times [2021-11-23 14:19:47,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:47,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932632295] [2021-11-23 14:19:47,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:47,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:47,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:47,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932632295] [2021-11-23 14:19:47,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932632295] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:19:47,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196832710] [2021-11-23 14:19:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:47,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:47,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:47,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:19:47,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 14:19:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:47,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 14:19:47,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:19:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:47,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:19:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:47,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196832710] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:19:47,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:19:47,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-23 14:19:47,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694844187] [2021-11-23 14:19:47,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:19:47,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 14:19:47,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:47,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 14:19:47,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-23 14:19:47,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:47,786 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:47,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:47,787 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:47,787 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:47,862 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 14:19:47,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 14:19:48,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:48,092 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 14:19:48,093 INFO L308 ceAbstractionStarter]: Result for error location t_funThread1of1ForFork0 was SAFE (1/2) [2021-11-23 14:19:48,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-23 14:19:48,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:48,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-23 14:19:48,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2021-11-23 14:19:48,102 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-23 14:19:48,103 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:19:48,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 14:19:48,187 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-23 14:19:48,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:48,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1887320846, now seen corresponding path program 1 times [2021-11-23 14:19:48,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:48,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849625045] [2021-11-23 14:19:48,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:48,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:48,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:48,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849625045] [2021-11-23 14:19:48,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849625045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:19:48,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:19:48,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:19:48,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283421646] [2021-11-23 14:19:48,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:19:48,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:19:48,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:48,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:19:48,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:19:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:48,311 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:48,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:48,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:48,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:48,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 14:19:48,348 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-23 14:19:48,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:48,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1839694122, now seen corresponding path program 1 times [2021-11-23 14:19:48,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:48,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702385761] [2021-11-23 14:19:48,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:48,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 14:19:48,372 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 14:19:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 14:19:48,432 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 14:19:48,432 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 14:19:48,432 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2021-11-23 14:19:48,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 14:19:48,440 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 14:19:48,440 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/2) [2021-11-23 14:19:48,441 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-23 14:19:48,441 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-11-23 14:19:48,451 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,452 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,452 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,452 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,452 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,452 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,452 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,452 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,453 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,453 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,453 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,453 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,453 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,453 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,454 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,454 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,454 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,454 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,454 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,454 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,455 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,455 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,455 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,455 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,455 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,455 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,456 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,456 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,456 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,456 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,456 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,456 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,457 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,457 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,457 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,457 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,458 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,458 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,458 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,458 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,458 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,458 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,458 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,459 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,459 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,459 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,459 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,459 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,460 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,460 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,460 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,460 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,460 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,460 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,461 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,461 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,461 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,461 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,461 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,461 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,461 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,462 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,462 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,462 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,463 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,463 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,463 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,463 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,463 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,463 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,464 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,464 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,464 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,464 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,465 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,465 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,465 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,465 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,465 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,465 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:48,467 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-23 14:19:48,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-23 14:19:48,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:48,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-23 14:19:48,476 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of2ForFork0 ======== [2021-11-23 14:19:48,477 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:19:48,477 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 14:19:48,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2021-11-23 14:19:48,571 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:19:48,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:48,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1250376856, now seen corresponding path program 1 times [2021-11-23 14:19:48,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:48,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418437648] [2021-11-23 14:19:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:48,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:48,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:48,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418437648] [2021-11-23 14:19:48,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418437648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:19:48,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:19:48,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:19:48,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781272287] [2021-11-23 14:19:48,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:19:48,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:19:48,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:48,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:19:48,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:19:48,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:48,644 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:48,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:48,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:49,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:49,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 14:19:49,674 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:19:49,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:49,675 INFO L85 PathProgramCache]: Analyzing trace with hash -340099093, now seen corresponding path program 1 times [2021-11-23 14:19:49,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:49,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782291823] [2021-11-23 14:19:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:49,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:49,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:49,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782291823] [2021-11-23 14:19:49,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782291823] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:19:49,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781936394] [2021-11-23 14:19:49,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:49,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:49,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:49,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:19:49,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 14:19:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:49,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 14:19:49,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:19:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:49,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:19:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:50,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781936394] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:19:50,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:19:50,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-23 14:19:50,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980374221] [2021-11-23 14:19:50,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:19:50,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 14:19:50,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:50,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 14:19:50,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-23 14:19:50,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:50,194 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:50,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:50,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:50,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 14:19:50,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 14:19:50,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 14:19:50,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 14:19:50,855 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 14:19:50,856 INFO L308 ceAbstractionStarter]: Result for error location t_funThread1of2ForFork0 was SAFE (1/3) [2021-11-23 14:19:50,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-23 14:19:50,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:50,860 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-23 14:19:50,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-23 14:19:50,867 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:19:50,867 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 14:19:50,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2021-11-23 14:19:50,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-23 14:19:50,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:50,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1314629612, now seen corresponding path program 1 times [2021-11-23 14:19:50,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:50,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110189796] [2021-11-23 14:19:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:50,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 14:19:51,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:51,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110189796] [2021-11-23 14:19:51,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110189796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:19:51,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:19:51,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:19:51,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189112101] [2021-11-23 14:19:51,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:19:51,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:19:51,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:51,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:19:51,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:19:51,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:51,123 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:51,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:51,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:51,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:51,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 14:19:51,169 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-23 14:19:51,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:51,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1926619430, now seen corresponding path program 1 times [2021-11-23 14:19:51,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:51,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547310793] [2021-11-23 14:19:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:51,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:51,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:51,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547310793] [2021-11-23 14:19:51,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547310793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:19:51,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:19:51,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 14:19:51,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179901563] [2021-11-23 14:19:51,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:19:51,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 14:19:51,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:51,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 14:19:51,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:19:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:51,287 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:51,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:51,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:51,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:51,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 14:19:51,398 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-23 14:19:51,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:51,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2015116882, now seen corresponding path program 1 times [2021-11-23 14:19:51,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:51,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432523344] [2021-11-23 14:19:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:51,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 14:19:51,436 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 14:19:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 14:19:51,497 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 14:19:51,497 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 14:19:51,498 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2021-11-23 14:19:51,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 14:19:51,501 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-23 14:19:51,502 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/3) [2021-11-23 14:19:51,502 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-23 14:19:51,502 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-11-23 14:19:51,520 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,520 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,524 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,524 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,525 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,525 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,525 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,525 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,525 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,525 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,527 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,527 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,527 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,527 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,552 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,552 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,552 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,553 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,553 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,553 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,553 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,553 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,553 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,553 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,554 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,554 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,554 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,554 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,554 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,554 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,555 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,555 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,555 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,555 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,555 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,555 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,555 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,556 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,556 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,556 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,556 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,556 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,556 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,556 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,557 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,557 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,557 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,557 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,557 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,557 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,557 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,557 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,558 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,558 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,558 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,558 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,558 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,558 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,561 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,561 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,564 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,564 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,564 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,564 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,564 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,565 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,565 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,565 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,565 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,565 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,566 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,566 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,566 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,566 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,566 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,567 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,567 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,567 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,568 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,568 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,568 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,568 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,568 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,569 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,569 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,569 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,569 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,570 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,570 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,570 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,570 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,570 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,571 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,571 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,571 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,572 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,572 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,572 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,572 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,572 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:51,574 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-23 14:19:51,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-23 14:19:51,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:51,577 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-23 14:19:51,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-23 14:19:51,584 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:19:51,584 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 14:19:51,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2021-11-23 14:19:51,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-23 14:19:51,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:51,736 INFO L85 PathProgramCache]: Analyzing trace with hash 455499667, now seen corresponding path program 1 times [2021-11-23 14:19:51,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:51,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525575778] [2021-11-23 14:19:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:51,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 14:19:51,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:51,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525575778] [2021-11-23 14:19:51,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525575778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:19:51,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:19:51,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:19:51,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38953643] [2021-11-23 14:19:51,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:19:51,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:19:51,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:51,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:19:51,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:19:51,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:51,830 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:51,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:51,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:51,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:51,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 14:19:51,883 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-23 14:19:51,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:51,883 INFO L85 PathProgramCache]: Analyzing trace with hash -198698441, now seen corresponding path program 1 times [2021-11-23 14:19:51,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:51,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341005102] [2021-11-23 14:19:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:51,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:51,997 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 14:19:51,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:51,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341005102] [2021-11-23 14:19:51,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341005102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:19:51,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:19:51,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 14:19:51,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396655460] [2021-11-23 14:19:51,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:19:52,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 14:19:52,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:52,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 14:19:52,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:19:52,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:52,001 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:52,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:52,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:52,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:52,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 14:19:52,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-23 14:19:52,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:52,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2120036297, now seen corresponding path program 1 times [2021-11-23 14:19:52,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:52,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100971531] [2021-11-23 14:19:52,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:52,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 14:19:52,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:52,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100971531] [2021-11-23 14:19:52,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100971531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:19:52,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:19:52,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 14:19:52,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715151280] [2021-11-23 14:19:52,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:19:52,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 14:19:52,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:52,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 14:19:52,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:19:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:52,273 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:52,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:52,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:52,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:52,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:52,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 14:19:52,387 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-23 14:19:52,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:52,388 INFO L85 PathProgramCache]: Analyzing trace with hash 744666399, now seen corresponding path program 1 times [2021-11-23 14:19:52,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:52,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889018918] [2021-11-23 14:19:52,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:52,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 14:19:52,421 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 14:19:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 14:19:52,485 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 14:19:52,485 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 14:19:52,485 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2021-11-23 14:19:52,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 14:19:52,488 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-23 14:19:52,488 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/4) [2021-11-23 14:19:52,489 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-23 14:19:52,489 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-11-23 14:19:52,502 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,502 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,503 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,503 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,503 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,503 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,503 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,505 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,505 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,505 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,505 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,506 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,506 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,506 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,506 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,506 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,507 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,507 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,507 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,507 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,507 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,507 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,508 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,508 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,508 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,508 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,508 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,508 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,509 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,509 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,509 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,509 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,510 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,510 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,510 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,510 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,510 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,510 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,511 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,511 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,511 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,511 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,512 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,512 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,512 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,512 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,512 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,512 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,513 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,513 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,513 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,513 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,513 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,514 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,514 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,514 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,514 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,514 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,514 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,515 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,515 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,515 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,515 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,515 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,516 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,516 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,516 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,516 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,516 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,516 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,517 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,517 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,517 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,517 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,517 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,517 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,518 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,518 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,518 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,518 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,518 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,519 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,519 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,519 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,519 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,519 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,519 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,520 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,520 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,520 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,520 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,520 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,520 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,521 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,521 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,521 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,521 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,522 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,522 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,522 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,522 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,522 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,522 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,523 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,523 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,523 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,523 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,523 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,523 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,524 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,524 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,524 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,524 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,524 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,525 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,525 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,525 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,525 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,525 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,525 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,527 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,527 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,527 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,527 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,528 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,528 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,528 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,528 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,529 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,529 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,529 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,530 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,530 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,530 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,530 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,530 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,530 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,531 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,531 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,531 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,531 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,532 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,532 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,532 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,532 WARN L322 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,533 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,533 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,533 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,533 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,533 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,533 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,534 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,534 WARN L322 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:19:52,535 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-23 14:19:52,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-23 14:19:52,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:52,542 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-23 14:19:52,551 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread4of4ForFork0 ======== [2021-11-23 14:19:52,551 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:19:52,551 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 14:19:52,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2021-11-23 14:19:52,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:19:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:52,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1418873301, now seen corresponding path program 1 times [2021-11-23 14:19:52,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:52,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216236158] [2021-11-23 14:19:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:52,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 14:19:52,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:52,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216236158] [2021-11-23 14:19:52,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216236158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:19:52,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:19:52,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:19:52,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350620992] [2021-11-23 14:19:52,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:19:52,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:19:52,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:52,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:19:52,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:19:52,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:52,876 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:52,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:52,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:52,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:52,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 14:19:52,972 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:19:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:52,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1501059459, now seen corresponding path program 1 times [2021-11-23 14:19:52,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:52,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858719897] [2021-11-23 14:19:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:52,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 14:19:53,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:53,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858719897] [2021-11-23 14:19:53,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858719897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:19:53,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:19:53,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 14:19:53,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177152539] [2021-11-23 14:19:53,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:19:53,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 14:19:53,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:53,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 14:19:53,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:19:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:53,076 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:53,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:53,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:53,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:53,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 14:19:53,223 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:19:53,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:53,224 INFO L85 PathProgramCache]: Analyzing trace with hash 28102245, now seen corresponding path program 1 times [2021-11-23 14:19:53,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:53,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980161867] [2021-11-23 14:19:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:53,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 14:19:53,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:53,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980161867] [2021-11-23 14:19:53,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980161867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:19:53,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:19:53,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 14:19:53,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162964114] [2021-11-23 14:19:53,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:19:53,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 14:19:53,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:53,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 14:19:53,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:19:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:53,342 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:53,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:53,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:53,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:53,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:53,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 14:19:53,485 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:19:53,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:53,485 INFO L85 PathProgramCache]: Analyzing trace with hash -363750023, now seen corresponding path program 1 times [2021-11-23 14:19:53,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:53,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49703440] [2021-11-23 14:19:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:53,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 14:19:53,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:53,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49703440] [2021-11-23 14:19:53,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49703440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:19:53,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:19:53,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 14:19:53,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378234450] [2021-11-23 14:19:53,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:19:53,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 14:19:53,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 14:19:53,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:19:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:53,612 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:53,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:53,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:53,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:53,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:53,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 14:19:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 14:19:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 14:19:53,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 14:19:53,919 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:19:53,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:53,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1589174020, now seen corresponding path program 1 times [2021-11-23 14:19:53,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:53,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218235828] [2021-11-23 14:19:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:53,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:54,060 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:54,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:54,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218235828] [2021-11-23 14:19:54,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218235828] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:19:54,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985204180] [2021-11-23 14:19:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:54,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:54,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:54,066 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:19:54,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95755c52-bae2-44cc-991d-f045eabbb607/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 14:19:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:54,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 14:19:54,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:19:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:54,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:19:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:54,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985204180] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:19:54,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:19:54,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-23 14:19:54,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137730118] [2021-11-23 14:19:54,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:19:54,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 14:19:54,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 14:19:54,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-11-23 14:19:54,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:54,950 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:54,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.181818181818182) internal successors, (268), 22 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:54,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:19:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-11-23 14:19:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-11-23 14:19:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-23 14:19:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.