./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/fib_unsafe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread/fib_unsafe-11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r --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 dd8583a115904a75c64c276a67bc1fecbbb0d70873f2ea75f8f51b865297f64f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:45:36,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:45:36,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:45:36,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:45:36,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:45:36,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:45:36,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:45:36,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:45:36,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:45:36,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:45:36,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:45:36,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:45:36,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:45:36,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:45:36,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:45:36,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:45:36,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:45:36,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:45:36,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:45:36,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:45:36,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:45:36,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:45:36,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:45:36,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:45:36,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:45:36,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:45:36,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:45:36,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:45:36,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:45:36,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:45:36,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:45:36,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:45:36,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:45:36,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:45:36,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:45:36,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:45:36,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:45:36,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:45:36,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:45:36,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:45:36,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:45:36,728 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/config/svcomp-Reach-32bit-GemCutter_Default.epf [2021-11-19 05:45:36,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:45:36,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:45:36,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:45:36,760 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:45:36,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:45:36,761 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:45:36,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:45:36,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:45:36,762 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:45:36,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:45:36,763 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:45:36,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:45:36,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:45:36,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:45:36,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:45:36,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:45:36,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:45:36,764 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:45:36,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:45:36,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:45:36,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:45:36,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:45:36,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:45:36,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-11-19 05:45:36,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:45:36,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:45:36,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:45:36,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:45:36,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:45:36,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:45:36,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:45:36,768 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:45:36,768 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-11-19 05:45:36,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:45:36,768 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-11-19 05:45:36,768 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-11-19 05:45:36,769 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_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd8583a115904a75c64c276a67bc1fecbbb0d70873f2ea75f8f51b865297f64f [2021-11-19 05:45:37,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:45:37,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:45:37,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:45:37,130 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:45:37,131 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:45:37,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/../../sv-benchmarks/c/pthread/fib_unsafe-11.i [2021-11-19 05:45:37,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/data/2286aaf5c/60755ed68526485f9b0d589c36f07dff/FLAG1ff314d7e [2021-11-19 05:45:37,945 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:45:37,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/sv-benchmarks/c/pthread/fib_unsafe-11.i [2021-11-19 05:45:37,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/data/2286aaf5c/60755ed68526485f9b0d589c36f07dff/FLAG1ff314d7e [2021-11-19 05:45:38,158 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/data/2286aaf5c/60755ed68526485f9b0d589c36f07dff [2021-11-19 05:45:38,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:45:38,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:45:38,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:45:38,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:45:38,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:45:38,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:45:38" (1/1) ... [2021-11-19 05:45:38,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@701f9529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38, skipping insertion in model container [2021-11-19 05:45:38,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:45:38" (1/1) ... [2021-11-19 05:45:38,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:45:38,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:45:38,699 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_37525101-ef8d-4443-9c01-a968fb0a2cb0/sv-benchmarks/c/pthread/fib_unsafe-11.i[30813,30826] [2021-11-19 05:45:38,703 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:45:38,714 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:45:38,771 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_37525101-ef8d-4443-9c01-a968fb0a2cb0/sv-benchmarks/c/pthread/fib_unsafe-11.i[30813,30826] [2021-11-19 05:45:38,779 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:45:38,819 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:45:38,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38 WrapperNode [2021-11-19 05:45:38,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:45:38,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:45:38,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:45:38,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:45:38,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38" (1/1) ... [2021-11-19 05:45:38,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38" (1/1) ... [2021-11-19 05:45:38,877 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2021-11-19 05:45:38,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:45:38,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:45:38,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:45:38,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:45:38,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38" (1/1) ... [2021-11-19 05:45:38,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38" (1/1) ... [2021-11-19 05:45:38,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38" (1/1) ... [2021-11-19 05:45:38,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38" (1/1) ... [2021-11-19 05:45:38,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38" (1/1) ... [2021-11-19 05:45:38,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38" (1/1) ... [2021-11-19 05:45:38,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38" (1/1) ... [2021-11-19 05:45:38,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:45:38,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:45:38,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:45:38,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:45:38,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38" (1/1) ... [2021-11-19 05:45:38,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:45:38,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 [2021-11-19 05:45:38,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:45:38,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:45:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-11-19 05:45:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-11-19 05:45:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-11-19 05:45:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-11-19 05:45:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:45:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-19 05:45:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:45:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:45:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:45:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:45:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-19 05:45:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:45:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:45:39,019 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 05:45:39,149 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:45:39,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:45:39,411 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:45:39,421 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:45:39,426 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 05:45:39,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:45:39 BoogieIcfgContainer [2021-11-19 05:45:39,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:45:39,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:45:39,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:45:39,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:45:39,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:45:38" (1/3) ... [2021-11-19 05:45:39,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a368ee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:45:39, skipping insertion in model container [2021-11-19 05:45:39,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:45:38" (2/3) ... [2021-11-19 05:45:39,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a368ee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:45:39, skipping insertion in model container [2021-11-19 05:45:39,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:45:39" (3/3) ... [2021-11-19 05:45:39,443 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_unsafe-11.i [2021-11-19 05:45:39,451 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 05:45:39,451 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:45:39,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:45:39,451 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 05:45:39,532 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,532 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,532 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,533 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,533 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,533 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,533 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,534 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,534 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,534 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,535 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,535 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,535 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,536 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,536 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,536 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,537 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,537 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,537 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,537 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,538 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,538 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,538 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,538 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,539 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,539 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,539 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,540 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,540 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,540 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,541 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,541 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,541 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,541 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,542 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,542 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,559 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,560 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,560 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,560 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,561 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,566 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,566 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,566 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,567 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,567 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 05:45:39,570 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-19 05:45:39,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-19 05:45:39,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 [2021-11-19 05:45:39,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-19 05:45:39,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2021-11-19 05:45:39,716 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-19 05:45:39,735 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 [2021-11-19 05:45:39,736 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 05:45:39,959 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 05:45:39,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:45:39,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1927097680, now seen corresponding path program 1 times [2021-11-19 05:45:39,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:45:39,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879397516] [2021-11-19 05:45:39,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:45:39,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:45:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:45:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:40,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:45:40,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879397516] [2021-11-19 05:45:40,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879397516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:45:40,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:45:40,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:45:40,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683374428] [2021-11-19 05:45:40,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:45:40,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:45:40,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:45:40,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:45:40,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:45:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:40,301 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-19 05:45:40,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 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) [2021-11-19 05:45:40,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:40,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:40,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:45:40,352 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 05:45:40,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:45:40,353 INFO L85 PathProgramCache]: Analyzing trace with hash 560415153, now seen corresponding path program 1 times [2021-11-19 05:45:40,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:45:40,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790096654] [2021-11-19 05:45:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:45:40,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:45:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:45:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:40,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:45:40,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790096654] [2021-11-19 05:45:40,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790096654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:45:40,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:45:40,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:45:40,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788301428] [2021-11-19 05:45:40,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:45:40,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:45:40,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:45:40,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:45:40,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:45:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:40,554 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-19 05:45:40,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-11-19 05:45:40,554 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:40,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:45:40,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:45:40,624 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 05:45:40,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:45:40,625 INFO L85 PathProgramCache]: Analyzing trace with hash -951035470, now seen corresponding path program 1 times [2021-11-19 05:45:40,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:45:40,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700967791] [2021-11-19 05:45:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:45:40,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:45:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:45:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:40,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:45:40,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700967791] [2021-11-19 05:45:40,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700967791] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:45:40,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777735535] [2021-11-19 05:45:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:45:40,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:45:40,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 [2021-11-19 05:45:40,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:45:40,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 05:45:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:45:40,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:45:40,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:45:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:41,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:45:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:41,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777735535] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:45:41,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:45:41,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-19 05:45:41,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112692820] [2021-11-19 05:45:41,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:45:41,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:45:41,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:45:41,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:45:41,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:45:41,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:41,492 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-19 05:45:41,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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) [2021-11-19 05:45:41,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:41,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:45:41,494 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:41,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:45:41,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:45:41,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:45:41,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:45:41,883 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 05:45:41,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:45:41,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1666707666, now seen corresponding path program 2 times [2021-11-19 05:45:41,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:45:41,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310813052] [2021-11-19 05:45:41,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:45:41,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:45:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:45:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:42,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:45:42,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310813052] [2021-11-19 05:45:42,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310813052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:45:42,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913245128] [2021-11-19 05:45:42,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:45:42,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:45:42,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 [2021-11-19 05:45:42,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:45:42,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 05:45:42,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:45:42,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:45:42,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 05:45:42,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:45:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:42,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:45:42,730 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:42,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913245128] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:45:42,731 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:45:42,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-11-19 05:45:42,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848869389] [2021-11-19 05:45:42,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:45:42,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 05:45:42,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:45:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 05:45:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:45:42,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:42,737 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-19 05:45:42,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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) [2021-11-19 05:45:42,737 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:42,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:45:42,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:45:42,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:45:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:45:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 05:45:43,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:45:43,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:45:43,283 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 05:45:43,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:45:43,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1283180782, now seen corresponding path program 3 times [2021-11-19 05:45:43,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:45:43,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673195245] [2021-11-19 05:45:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:45:43,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:45:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:45:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:43,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:45:43,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673195245] [2021-11-19 05:45:43,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673195245] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:45:43,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104926218] [2021-11-19 05:45:43,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:45:43,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:45:43,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 [2021-11-19 05:45:43,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:45:43,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 05:45:43,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 05:45:43,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:45:43,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 05:45:43,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:45:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:44,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:45:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:44,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104926218] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:45:44,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:45:44,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2021-11-19 05:45:44,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750435835] [2021-11-19 05:45:44,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:45:44,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 05:45:44,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:45:44,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 05:45:44,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 05:45:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:44,637 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-19 05:45:44,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 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) [2021-11-19 05:45:44,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:44,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:45:44,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:45:44,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-19 05:45:44,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:45:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:45:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:45:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 05:45:45,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-19 05:45:45,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-19 05:45:45,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:45:45,607 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 05:45:45,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:45:45,608 INFO L85 PathProgramCache]: Analyzing trace with hash 835265426, now seen corresponding path program 4 times [2021-11-19 05:45:45,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:45:45,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049526504] [2021-11-19 05:45:45,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:45:45,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:45:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:45:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:46,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:45:46,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049526504] [2021-11-19 05:45:46,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049526504] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:45:46,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784283414] [2021-11-19 05:45:46,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:45:46,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:45:46,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 [2021-11-19 05:45:46,243 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:45:46,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37525101-ef8d-4443-9c01-a968fb0a2cb0/bin/ugemcutter-Ozs8LMUF8r/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 05:45:46,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:45:46,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:45:46,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-19 05:45:46,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:45:50,513 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 572 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:45:50,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:50:09,124 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:59:26,814 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~i~0_8 Int)) (or (< 1 v_~i~0_8) (forall ((v_~j~0_8 Int)) (or (< 1 v_~j~0_8) (forall ((v_~cur~0_30 Int)) (or (< v_~cur~0_30 (+ c_~prev~0 c_~cur~0)) (and (forall ((v_~cur~0_28 Int) (aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse0 (* 2 v_~cur~0_26))) (or (< aux_mod_v_~cur~0_22_51 0) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 23 aux_mod_v_~cur~0_22_51 (* 2 v_~j~0_8) (* 2 aux_mod_v_~next~0_20_56))) (<= 2 aux_mod_v_~cur~0_22_51) (< v_~cur~0_28 (+ (* 2 v_~cur~0_30) c_~cur~0)) (< aux_div_v_~cur~0_22_51 (+ .cse0 c_~cur~0 v_~cur~0_28 v_~cur~0_30 1)) (< v_~cur~0_26 (+ c_~cur~0 (* 2 v_~cur~0_28) v_~cur~0_30)) (< v_~prev~0_24 (+ c_~cur~0 v_~cur~0_28 v_~cur~0_26 v_~cur~0_30)) (< (+ aux_mod_v_~next~0_20_56 (* 2 aux_mod_v_~cur~0_22_51) 11 v_~j~0_8) (+ (* 3 v_~prev~0_24) .cse0 c_~cur~0 (* 2 aux_div_v_~next~0_20_56) (* 4 aux_div_v_~cur~0_22_51) v_~cur~0_28 v_~cur~0_30)) (<= 2 aux_mod_v_~next~0_20_56) (< aux_mod_v_~next~0_20_56 0)))) (forall ((v_~cur~0_28 Int) (aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse1 (* 2 v_~cur~0_26))) (or (< aux_mod_v_~cur~0_22_51 0) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 23 (* 2 v_~i~0_8) aux_mod_v_~cur~0_22_51 (* 2 aux_mod_v_~next~0_20_56))) (<= 2 aux_mod_v_~cur~0_22_51) (< v_~cur~0_28 (+ (* 2 v_~cur~0_30) c_~cur~0)) (< (+ aux_mod_v_~next~0_20_56 (* 2 aux_mod_v_~cur~0_22_51) 11 v_~i~0_8) (+ (* 3 v_~prev~0_24) .cse1 c_~cur~0 (* 2 aux_div_v_~next~0_20_56) (* 4 aux_div_v_~cur~0_22_51) v_~cur~0_28 v_~cur~0_30)) (< aux_div_v_~cur~0_22_51 (+ .cse1 c_~cur~0 v_~cur~0_28 v_~cur~0_30 1)) (< v_~cur~0_26 (+ c_~cur~0 (* 2 v_~cur~0_28) v_~cur~0_30)) (< v_~prev~0_24 (+ c_~cur~0 v_~cur~0_28 v_~cur~0_26 v_~cur~0_30)) (<= 2 aux_mod_v_~next~0_20_56) (< aux_mod_v_~next~0_20_56 0))))))))))) is different from false