./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44dec35de9ed8408896b6e9513fe1f32435d026e2fe7d21fe3b275ad7f75412d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:34:52,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:34:52,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:34:52,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:34:52,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:34:52,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:34:52,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:34:52,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:34:52,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:34:52,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:34:52,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:34:53,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:34:53,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:34:53,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:34:53,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:34:53,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:34:53,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:34:53,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:34:53,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:34:53,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:34:53,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:34:53,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:34:53,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:34:53,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:34:53,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:34:53,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:34:53,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:34:53,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:34:53,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:34:53,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:34:53,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:34:53,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:34:53,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:34:53,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:34:53,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:34:53,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:34:53,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:34:53,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:34:53,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:34:53,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:34:53,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:34:53,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:34:53,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:34:53,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:34:53,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:34:53,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:34:53,088 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:34:53,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:34:53,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:34:53,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:34:53,091 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:34:53,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:34:53,092 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:34:53,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:34:53,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:34:53,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:34:53,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:34:53,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:34:53,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:34:53,096 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:34:53,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:34:53,097 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:34:53,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:34:53,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:34:53,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:34:53,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:34:53,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:34:53,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:34:53,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:34:53,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:34:53,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:34:53,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:34:53,103 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:34:53,103 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:34:53,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:34:53,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:34:53,104 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_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44dec35de9ed8408896b6e9513fe1f32435d026e2fe7d21fe3b275ad7f75412d [2021-11-20 07:34:53,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:34:53,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:34:53,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:34:53,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:34:53,452 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:34:53,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i [2021-11-20 07:34:53,544 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/data/3848fcbdd/72c485aa73f449cbba83b14c9d1cac8b/FLAG24bfd60ca [2021-11-20 07:34:54,150 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:34:54,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i [2021-11-20 07:34:54,158 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/data/3848fcbdd/72c485aa73f449cbba83b14c9d1cac8b/FLAG24bfd60ca [2021-11-20 07:34:54,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/data/3848fcbdd/72c485aa73f449cbba83b14c9d1cac8b [2021-11-20 07:34:54,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:34:54,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:34:54,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:34:54,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:34:54,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:34:54,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:34:54" (1/1) ... [2021-11-20 07:34:54,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7443f0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54, skipping insertion in model container [2021-11-20 07:34:54,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:34:54" (1/1) ... [2021-11-20 07:34:54,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:34:54,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:34:54,855 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_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[1224,1237] [2021-11-20 07:34:54,890 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_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[2806,2819] [2021-11-20 07:34:54,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:34:54,902 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:34:54,918 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_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[1224,1237] [2021-11-20 07:34:54,934 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_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[2806,2819] [2021-11-20 07:34:54,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:34:54,957 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:34:54,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54 WrapperNode [2021-11-20 07:34:54,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:34:54,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:34:54,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:34:54,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:34:54,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54" (1/1) ... [2021-11-20 07:34:54,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54" (1/1) ... [2021-11-20 07:34:55,019 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2021-11-20 07:34:55,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:34:55,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:34:55,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:34:55,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:34:55,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54" (1/1) ... [2021-11-20 07:34:55,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54" (1/1) ... [2021-11-20 07:34:55,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54" (1/1) ... [2021-11-20 07:34:55,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54" (1/1) ... [2021-11-20 07:34:55,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54" (1/1) ... [2021-11-20 07:34:55,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54" (1/1) ... [2021-11-20 07:34:55,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54" (1/1) ... [2021-11-20 07:34:55,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:34:55,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:34:55,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:34:55,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:34:55,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54" (1/1) ... [2021-11-20 07:34:55,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:34:55,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:34:55,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:34:55,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:34:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:34:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:34:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:34:55,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:34:55,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 07:34:55,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 07:34:55,290 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:34:55,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:34:55,592 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:34:55,612 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:34:55,612 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:34:55,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:34:55 BoogieIcfgContainer [2021-11-20 07:34:55,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:34:55,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:34:55,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:34:55,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:34:55,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:34:54" (1/3) ... [2021-11-20 07:34:55,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566872e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:34:55, skipping insertion in model container [2021-11-20 07:34:55,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:34:54" (2/3) ... [2021-11-20 07:34:55,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566872e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:34:55, skipping insertion in model container [2021-11-20 07:34:55,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:34:55" (3/3) ... [2021-11-20 07:34:55,654 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_3.i [2021-11-20 07:34:55,661 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:34:55,661 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 07:34:55,772 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:34:55,785 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=PETRI_NET, 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 [2021-11-20 07:34:55,785 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 07:34:55,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:34:55,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 07:34:55,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:34:55,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:34:55,830 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:34:55,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:34:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-11-20 07:34:55,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:34:55,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505440703] [2021-11-20 07:34:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:34:55,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:34:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:34:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:34:56,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:34:56,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505440703] [2021-11-20 07:34:56,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505440703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:34:56,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:34:56,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:34:56,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231595858] [2021-11-20 07:34:56,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:34:56,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:34:56,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:34:56,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:34:56,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:34:56,147 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:34:56,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:34:56,203 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-11-20 07:34:56,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:34:56,207 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 07:34:56,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:34:56,216 INFO L225 Difference]: With dead ends: 57 [2021-11-20 07:34:56,217 INFO L226 Difference]: Without dead ends: 26 [2021-11-20 07:34:56,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:34:56,229 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:34:56,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:34:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-20 07:34:56,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-20 07:34:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:34:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-20 07:34:56,294 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-11-20 07:34:56,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:34:56,295 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-20 07:34:56,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:34:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-20 07:34:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 07:34:56,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:34:56,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:34:56,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:34:56,301 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:34:56,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:34:56,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-11-20 07:34:56,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:34:56,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226379680] [2021-11-20 07:34:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:34:56,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:34:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:34:56,333 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:34:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:34:56,397 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:34:56,398 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 07:34:56,401 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-20 07:34:56,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-20 07:34:56,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:34:56,417 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 07:34:56,421 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:34:56,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:34:56 BoogieIcfgContainer [2021-11-20 07:34:56,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:34:56,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:34:56,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:34:56,469 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:34:56,470 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:34:55" (3/4) ... [2021-11-20 07:34:56,476 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:34:56,477 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:34:56,480 INFO L158 Benchmark]: Toolchain (without parser) took 1938.32ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 65.5MB in the beginning and 99.6MB in the end (delta: -34.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:34:56,481 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 98.6MB. Free memory was 50.8MB in the beginning and 50.7MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:34:56,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.91ms. Allocated memory is still 98.6MB. Free memory was 65.3MB in the beginning and 72.9MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:34:56,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.40ms. Allocated memory is still 98.6MB. Free memory was 72.9MB in the beginning and 71.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:34:56,491 INFO L158 Benchmark]: Boogie Preprocessor took 34.49ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 70.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:34:56,492 INFO L158 Benchmark]: RCFGBuilder took 570.79ms. Allocated memory is still 98.6MB. Free memory was 69.8MB in the beginning and 59.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 07:34:56,493 INFO L158 Benchmark]: TraceAbstraction took 838.27ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 58.6MB in the beginning and 99.6MB in the end (delta: -41.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:34:56,494 INFO L158 Benchmark]: Witness Printer took 8.60ms. Allocated memory is still 132.1MB. Free memory is still 99.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:34:56,501 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 98.6MB. Free memory was 50.8MB in the beginning and 50.7MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 416.91ms. Allocated memory is still 98.6MB. Free memory was 65.3MB in the beginning and 72.9MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.40ms. Allocated memory is still 98.6MB. Free memory was 72.9MB in the beginning and 71.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.49ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 70.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 570.79ms. Allocated memory is still 98.6MB. Free memory was 69.8MB in the beginning and 59.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 838.27ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 58.6MB in the beginning and 99.6MB in the end (delta: -41.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 8.60ms. Allocated memory is still 132.1MB. Free memory is still 99.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 100. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=49] [L109] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 07:34:56,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44dec35de9ed8408896b6e9513fe1f32435d026e2fe7d21fe3b275ad7f75412d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:34:59,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:34:59,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:34:59,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:34:59,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:34:59,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:34:59,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:34:59,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:34:59,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:34:59,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:34:59,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:34:59,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:34:59,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:34:59,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:34:59,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:34:59,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:34:59,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:34:59,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:34:59,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:34:59,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:34:59,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:34:59,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:34:59,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:34:59,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:34:59,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:34:59,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:34:59,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:34:59,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:34:59,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:34:59,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:34:59,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:34:59,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:34:59,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:34:59,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:34:59,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:34:59,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:34:59,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:34:59,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:34:59,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:34:59,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:34:59,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:34:59,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 07:34:59,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:34:59,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:34:59,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:34:59,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:34:59,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:34:59,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:34:59,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:34:59,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:34:59,966 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:34:59,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:34:59,968 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:34:59,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:34:59,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:34:59,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:34:59,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:34:59,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:34:59,970 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:34:59,970 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:34:59,971 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:34:59,971 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:34:59,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:34:59,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:34:59,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:34:59,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:34:59,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:34:59,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:34:59,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:34:59,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:34:59,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:34:59,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:34:59,975 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:34:59,975 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:34:59,976 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:34:59,976 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:34:59,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:34:59,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:34:59,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:34:59,977 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44dec35de9ed8408896b6e9513fe1f32435d026e2fe7d21fe3b275ad7f75412d [2021-11-20 07:35:00,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:35:00,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:35:00,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:35:00,530 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:35:00,531 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:35:00,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i [2021-11-20 07:35:00,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/data/fbde3580c/e7ad17b1f53b45c7ae249a310a8a45f2/FLAG7c8e45718 [2021-11-20 07:35:01,292 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:35:01,293 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i [2021-11-20 07:35:01,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/data/fbde3580c/e7ad17b1f53b45c7ae249a310a8a45f2/FLAG7c8e45718 [2021-11-20 07:35:01,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/data/fbde3580c/e7ad17b1f53b45c7ae249a310a8a45f2 [2021-11-20 07:35:01,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:35:01,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:35:01,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:35:01,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:35:01,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:35:01,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:35:01" (1/1) ... [2021-11-20 07:35:01,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f40fa03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:01, skipping insertion in model container [2021-11-20 07:35:01,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:35:01" (1/1) ... [2021-11-20 07:35:01,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:35:01,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:35:01,947 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_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[1224,1237] [2021-11-20 07:35:01,986 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_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[2806,2819] [2021-11-20 07:35:01,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:35:02,004 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:35:02,020 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_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[1224,1237] [2021-11-20 07:35:02,037 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_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[2806,2819] [2021-11-20 07:35:02,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:35:02,087 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:35:02,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:02 WrapperNode [2021-11-20 07:35:02,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:35:02,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:35:02,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:35:02,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:35:02,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:02" (1/1) ... [2021-11-20 07:35:02,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:02" (1/1) ... [2021-11-20 07:35:02,184 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2021-11-20 07:35:02,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:35:02,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:35:02,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:35:02,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:35:02,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:02" (1/1) ... [2021-11-20 07:35:02,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:02" (1/1) ... [2021-11-20 07:35:02,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:02" (1/1) ... [2021-11-20 07:35:02,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:02" (1/1) ... [2021-11-20 07:35:02,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:02" (1/1) ... [2021-11-20 07:35:02,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:02" (1/1) ... [2021-11-20 07:35:02,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:02" (1/1) ... [2021-11-20 07:35:02,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:35:02,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:35:02,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:35:02,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:35:02,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:02" (1/1) ... [2021-11-20 07:35:02,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:35:02,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:35:02,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:35:02,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:35:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:35:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 07:35:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:35:02,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:35:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 07:35:02,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 07:35:02,443 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:35:02,445 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:35:09,568 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:35:09,576 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:35:09,577 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:35:09,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:35:09 BoogieIcfgContainer [2021-11-20 07:35:09,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:35:09,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:35:09,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:35:09,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:35:09,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:35:01" (1/3) ... [2021-11-20 07:35:09,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e92dd90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:35:09, skipping insertion in model container [2021-11-20 07:35:09,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:02" (2/3) ... [2021-11-20 07:35:09,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e92dd90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:35:09, skipping insertion in model container [2021-11-20 07:35:09,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:35:09" (3/3) ... [2021-11-20 07:35:09,595 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_3.i [2021-11-20 07:35:09,600 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:35:09,601 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 07:35:09,651 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:35:09,659 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=PETRI_NET, 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 [2021-11-20 07:35:09,660 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 07:35:09,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:35:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 07:35:09,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:09,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:09,684 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:35:09,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:09,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-11-20 07:35:09,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:35:09,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039886873] [2021-11-20 07:35:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:09,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:35:09,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:35:09,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:35:09,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:35:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:11,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 07:35:11,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:35:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:35:11,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:35:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:35:11,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:35:11,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039886873] [2021-11-20 07:35:11,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039886873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:11,732 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:11,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:35:11,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774263855] [2021-11-20 07:35:11,736 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:11,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:35:11,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:35:11,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:35:11,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:35:11,787 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:11,820 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-11-20 07:35:11,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:35:11,823 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 07:35:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:11,834 INFO L225 Difference]: With dead ends: 57 [2021-11-20 07:35:11,835 INFO L226 Difference]: Without dead ends: 26 [2021-11-20 07:35:11,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:35:11,862 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:11,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:35:11,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-20 07:35:11,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-20 07:35:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:35:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-20 07:35:11,933 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-11-20 07:35:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:11,933 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-20 07:35:11,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:11,936 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-20 07:35:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 07:35:11,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:11,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:11,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 07:35:12,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:35:12,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:35:12,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-11-20 07:35:12,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:35:12,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367759103] [2021-11-20 07:35:12,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:12,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:35:12,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:35:12,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:35:12,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909fb41c-bea6-4c4d-b53d-a9ceafbc1290/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process