./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_1_7.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_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL --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 0e37b49a93872e76fb66cf7e4502a946df76771dec4178760379f31632a44194 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:53:33,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:53:33,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:53:34,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:53:34,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:53:34,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:53:34,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:53:34,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:53:34,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:53:34,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:53:34,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:53:34,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:53:34,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:53:34,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:53:34,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:53:34,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:53:34,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:53:34,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:53:34,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:53:34,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:53:34,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:53:34,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:53:34,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:53:34,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:53:34,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:53:34,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:53:34,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:53:34,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:53:34,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:53:34,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:53:34,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:53:34,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:53:34,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:53:34,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:53:34,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:53:34,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:53:34,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:53:34,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:53:34,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:53:34,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:53:34,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:53:34,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:53:34,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:53:34,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:53:34,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:53:34,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:53:34,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:53:34,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:53:34,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:53:34,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:53:34,230 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:53:34,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:53:34,231 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:53:34,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:53:34,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:53:34,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:53:34,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:53:34,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:53:34,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:53:34,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:53:34,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:53:34,234 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:53:34,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:53:34,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:53:34,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:53:34,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:53:34,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:53:34,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:53:34,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:53:34,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:53:34,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:53:34,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:53:34,238 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:53:34,239 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:53:34,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:53:34,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:53:34,240 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_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e37b49a93872e76fb66cf7e4502a946df76771dec4178760379f31632a44194 [2021-11-19 04:53:34,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:53:34,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:53:34,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:53:34,565 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:53:34,566 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:53:34,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/combinations/gcd_3+newton_1_7.i [2021-11-19 04:53:34,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/data/69ff48632/95f9512eef9941a0a212199544541335/FLAGa4279c462 [2021-11-19 04:53:35,252 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:53:35,253 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/sv-benchmarks/c/combinations/gcd_3+newton_1_7.i [2021-11-19 04:53:35,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/data/69ff48632/95f9512eef9941a0a212199544541335/FLAGa4279c462 [2021-11-19 04:53:35,566 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/data/69ff48632/95f9512eef9941a0a212199544541335 [2021-11-19 04:53:35,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:53:35,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:53:35,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:53:35,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:53:35,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:53:35,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:35" (1/1) ... [2021-11-19 04:53:35,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3417d371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35, skipping insertion in model container [2021-11-19 04:53:35,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:35" (1/1) ... [2021-11-19 04:53:35,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:53:35,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:53:35,817 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_e9b3be4f-b196-434b-b18e-e6c0df9110c2/sv-benchmarks/c/combinations/gcd_3+newton_1_7.i[1226,1239] [2021-11-19 04:53:35,850 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_e9b3be4f-b196-434b-b18e-e6c0df9110c2/sv-benchmarks/c/combinations/gcd_3+newton_1_7.i[2820,2833] [2021-11-19 04:53:35,852 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:53:35,862 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:53:35,878 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_e9b3be4f-b196-434b-b18e-e6c0df9110c2/sv-benchmarks/c/combinations/gcd_3+newton_1_7.i[1226,1239] [2021-11-19 04:53:35,892 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_e9b3be4f-b196-434b-b18e-e6c0df9110c2/sv-benchmarks/c/combinations/gcd_3+newton_1_7.i[2820,2833] [2021-11-19 04:53:35,894 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:53:35,910 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:53:35,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35 WrapperNode [2021-11-19 04:53:35,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:53:35,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:53:35,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:53:35,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:53:35,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35" (1/1) ... [2021-11-19 04:53:35,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35" (1/1) ... [2021-11-19 04:53:35,959 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-19 04:53:35,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:53:35,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:53:35,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:53:35,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:53:35,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35" (1/1) ... [2021-11-19 04:53:35,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35" (1/1) ... [2021-11-19 04:53:35,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35" (1/1) ... [2021-11-19 04:53:35,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35" (1/1) ... [2021-11-19 04:53:35,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35" (1/1) ... [2021-11-19 04:53:35,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35" (1/1) ... [2021-11-19 04:53:35,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35" (1/1) ... [2021-11-19 04:53:35,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:53:35,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:53:35,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:53:35,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:53:35,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35" (1/1) ... [2021-11-19 04:53:36,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:53:36,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:53:36,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:53:36,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:53:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:53:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:53:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:53:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:53:36,190 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:53:36,192 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:53:36,384 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:53:36,390 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:53:36,391 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 04:53:36,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:36 BoogieIcfgContainer [2021-11-19 04:53:36,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:53:36,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:53:36,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:53:36,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:53:36,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:53:35" (1/3) ... [2021-11-19 04:53:36,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6661629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:36, skipping insertion in model container [2021-11-19 04:53:36,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:35" (2/3) ... [2021-11-19 04:53:36,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6661629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:36, skipping insertion in model container [2021-11-19 04:53:36,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:36" (3/3) ... [2021-11-19 04:53:36,420 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_7.i [2021-11-19 04:53:36,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:53:36,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 04:53:36,530 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:53:36,540 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 [2021-11-19 04:53:36,540 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 04:53:36,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 04:53:36,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:53:36,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:53:36,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:53:36,566 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:53:36,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:53:36,573 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-19 04:53:36,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:53:36,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247713114] [2021-11-19 04:53:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:53:36,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:53:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:53:36,817 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 04:53:36,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:53:36,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247713114] [2021-11-19 04:53:36,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247713114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:53:36,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:53:36,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:53:36,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709237901] [2021-11-19 04:53:36,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:53:36,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:53:36,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:53:36,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:53:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:53:36,878 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 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) [2021-11-19 04:53:36,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:53:36,901 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-11-19 04:53:36,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:53:36,904 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 [2021-11-19 04:53:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:53:36,917 INFO L225 Difference]: With dead ends: 47 [2021-11-19 04:53:36,917 INFO L226 Difference]: Without dead ends: 19 [2021-11-19 04:53:36,922 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 [2021-11-19 04:53:36,928 INFO L933 BasicCegarLoop]: 31 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, 31 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 [2021-11-19 04:53:36,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:53:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-19 04:53:36,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-19 04:53:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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 04:53:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-19 04:53:36,970 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-19 04:53:36,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:53:36,971 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-19 04:53:36,971 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) [2021-11-19 04:53:36,971 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-19 04:53:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:53:36,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:53:36,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:53:36,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:53:36,974 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:53:36,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:53:36,979 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-19 04:53:36,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:53:36,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158377205] [2021-11-19 04:53:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:53:36,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:53:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:53:37,011 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:53:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:53:37,057 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:53:37,058 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 04:53:37,060 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 04:53:37,062 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 04:53:37,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:53:37,071 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 04:53:37,077 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:53:37,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:53:37 BoogieIcfgContainer [2021-11-19 04:53:37,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:53:37,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:53:37,129 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:53:37,129 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:53:37,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:36" (3/4) ... [2021-11-19 04:53:37,133 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 04:53:37,133 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:53:37,137 INFO L158 Benchmark]: Toolchain (without parser) took 1564.58ms. Allocated memory is still 121.6MB. Free memory was 83.2MB in the beginning and 56.2MB in the end (delta: 27.0MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2021-11-19 04:53:37,138 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 121.6MB. Free memory is still 99.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:53:37,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.93ms. Allocated memory is still 121.6MB. Free memory was 83.0MB in the beginning and 94.0MB in the end (delta: -11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:53:37,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.34ms. Allocated memory is still 121.6MB. Free memory was 94.0MB in the beginning and 92.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:53:37,146 INFO L158 Benchmark]: Boogie Preprocessor took 29.15ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 90.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:53:37,147 INFO L158 Benchmark]: RCFGBuilder took 402.35ms. Allocated memory is still 121.6MB. Free memory was 90.8MB in the beginning and 79.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 04:53:37,147 INFO L158 Benchmark]: TraceAbstraction took 733.01ms. Allocated memory is still 121.6MB. Free memory was 78.8MB in the beginning and 56.7MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-19 04:53:37,148 INFO L158 Benchmark]: Witness Printer took 4.73ms. Allocated memory is still 121.6MB. Free memory was 56.7MB in the beginning and 56.2MB in the end (delta: 513.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:53:37,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 121.6MB. Free memory is still 99.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.93ms. Allocated memory is still 121.6MB. Free memory was 83.0MB in the beginning and 94.0MB in the end (delta: -11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.34ms. Allocated memory is still 121.6MB. Free memory was 94.0MB in the beginning and 92.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.15ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 90.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 402.35ms. Allocated memory is still 121.6MB. Free memory was 90.8MB in the beginning and 79.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 733.01ms. Allocated memory is still 121.6MB. Free memory was 78.8MB in the beginning and 56.7MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.73ms. Allocated memory is still 121.6MB. Free memory was 56.7MB in the beginning and 56.2MB in the end (delta: 513.4kB). 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: 102]: 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 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L93] CALL, EXPR f(IN) [L80] 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] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] 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] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] 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 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, 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, 31 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, 31 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=27occurred 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, 0.0s 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 [2021-11-19 04:53:37,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/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_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL --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 0e37b49a93872e76fb66cf7e4502a946df76771dec4178760379f31632a44194 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:53:39,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:53:39,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:53:39,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:53:39,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:53:39,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:53:39,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:53:39,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:53:39,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:53:39,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:53:40,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:53:40,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:53:40,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:53:40,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:53:40,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:53:40,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:53:40,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:53:40,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:53:40,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:53:40,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:53:40,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:53:40,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:53:40,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:53:40,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:53:40,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:53:40,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:53:40,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:53:40,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:53:40,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:53:40,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:53:40,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:53:40,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:53:40,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:53:40,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:53:40,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:53:40,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:53:40,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:53:40,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:53:40,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:53:40,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:53:40,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:53:40,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-19 04:53:40,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:53:40,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:53:40,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:53:40,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:53:40,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:53:40,105 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:53:40,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:53:40,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:53:40,108 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:53:40,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:53:40,109 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:53:40,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:53:40,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:53:40,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:53:40,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:53:40,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:53:40,111 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 04:53:40,111 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 04:53:40,111 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:53:40,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:53:40,112 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:53:40,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:53:40,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:53:40,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:53:40,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:53:40,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:53:40,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:53:40,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:53:40,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:53:40,114 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 04:53:40,115 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 04:53:40,115 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:53:40,115 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:53:40,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:53:40,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:53:40,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 04:53:40,116 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_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e37b49a93872e76fb66cf7e4502a946df76771dec4178760379f31632a44194 [2021-11-19 04:53:40,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:53:40,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:53:40,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:53:40,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:53:40,675 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:53:40,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/combinations/gcd_3+newton_1_7.i [2021-11-19 04:53:40,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/data/5f26adb3c/1f2b2cfc73194387b8431c668c5b2cc3/FLAG4c69f990d [2021-11-19 04:53:41,378 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:53:41,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/sv-benchmarks/c/combinations/gcd_3+newton_1_7.i [2021-11-19 04:53:41,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/data/5f26adb3c/1f2b2cfc73194387b8431c668c5b2cc3/FLAG4c69f990d [2021-11-19 04:53:41,668 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/data/5f26adb3c/1f2b2cfc73194387b8431c668c5b2cc3 [2021-11-19 04:53:41,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:53:41,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:53:41,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:53:41,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:53:41,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:53:41,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:41" (1/1) ... [2021-11-19 04:53:41,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4845c10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41, skipping insertion in model container [2021-11-19 04:53:41,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:41" (1/1) ... [2021-11-19 04:53:41,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:53:41,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:53:41,882 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_e9b3be4f-b196-434b-b18e-e6c0df9110c2/sv-benchmarks/c/combinations/gcd_3+newton_1_7.i[1226,1239] [2021-11-19 04:53:41,914 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_e9b3be4f-b196-434b-b18e-e6c0df9110c2/sv-benchmarks/c/combinations/gcd_3+newton_1_7.i[2820,2833] [2021-11-19 04:53:41,916 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:53:41,929 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:53:41,943 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_e9b3be4f-b196-434b-b18e-e6c0df9110c2/sv-benchmarks/c/combinations/gcd_3+newton_1_7.i[1226,1239] [2021-11-19 04:53:41,956 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_e9b3be4f-b196-434b-b18e-e6c0df9110c2/sv-benchmarks/c/combinations/gcd_3+newton_1_7.i[2820,2833] [2021-11-19 04:53:41,957 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:53:41,974 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:53:41,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41 WrapperNode [2021-11-19 04:53:41,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:53:41,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:53:41,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:53:41,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:53:41,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41" (1/1) ... [2021-11-19 04:53:41,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41" (1/1) ... [2021-11-19 04:53:42,022 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-19 04:53:42,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:53:42,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:53:42,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:53:42,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:53:42,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41" (1/1) ... [2021-11-19 04:53:42,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41" (1/1) ... [2021-11-19 04:53:42,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41" (1/1) ... [2021-11-19 04:53:42,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41" (1/1) ... [2021-11-19 04:53:42,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41" (1/1) ... [2021-11-19 04:53:42,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41" (1/1) ... [2021-11-19 04:53:42,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41" (1/1) ... [2021-11-19 04:53:42,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:53:42,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:53:42,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:53:42,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:53:42,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41" (1/1) ... [2021-11-19 04:53:42,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:53:42,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:53:42,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:53:42,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:53:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:53:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 04:53:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:53:42,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:53:42,276 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:53:42,280 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:53:49,072 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:53:49,080 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:53:49,080 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 04:53:49,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:49 BoogieIcfgContainer [2021-11-19 04:53:49,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:53:49,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:53:49,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:53:49,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:53:49,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:53:41" (1/3) ... [2021-11-19 04:53:49,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37388f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:49, skipping insertion in model container [2021-11-19 04:53:49,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:41" (2/3) ... [2021-11-19 04:53:49,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37388f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:49, skipping insertion in model container [2021-11-19 04:53:49,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:49" (3/3) ... [2021-11-19 04:53:49,093 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_7.i [2021-11-19 04:53:49,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:53:49,101 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 04:53:49,159 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:53:49,168 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 [2021-11-19 04:53:49,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 04:53:49,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 04:53:49,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:53:49,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:53:49,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:53:49,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:53:49,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:53:49,202 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-19 04:53:49,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:53:49,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182819728] [2021-11-19 04:53:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:53:49,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:53:49,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:53:49,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:53:49,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 04:53:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:53:50,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 04:53:50,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:53:50,946 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 04:53:50,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:53:51,020 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 04:53:51,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:53:51,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182819728] [2021-11-19 04:53:51,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182819728] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:53:51,023 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:53:51,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:53:51,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406635172] [2021-11-19 04:53:51,027 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:53:51,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:53:51,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:53:51,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:53:51,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:53:51,073 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 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) [2021-11-19 04:53:51,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:53:51,094 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-11-19 04:53:51,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:53:51,097 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 [2021-11-19 04:53:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:53:51,108 INFO L225 Difference]: With dead ends: 47 [2021-11-19 04:53:51,108 INFO L226 Difference]: Without dead ends: 19 [2021-11-19 04:53:51,112 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 [2021-11-19 04:53:51,118 INFO L933 BasicCegarLoop]: 31 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, 31 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 [2021-11-19 04:53:51,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:53:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-19 04:53:51,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-19 04:53:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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 04:53:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-19 04:53:51,156 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-19 04:53:51,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:53:51,156 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-19 04:53:51,157 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) [2021-11-19 04:53:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-19 04:53:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:53:51,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:53:51,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:53:51,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 04:53:51,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:53:51,375 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:53:51,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:53:51,377 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-19 04:53:51,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:53:51,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044919152] [2021-11-19 04:53:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:53:51,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:53:51,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:53:51,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:53:51,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 04:53:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:53:57,069 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:56:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:56:18,555 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-19 04:56:18,555 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 04:56:18,558 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 04:56:18,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 04:56:18,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:18,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:56:18,779 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 04:56:18,787 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:56:18,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:56:18 BoogieIcfgContainer [2021-11-19 04:56:18,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:56:18,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:56:18,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:56:18,825 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:56:18,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:49" (3/4) ... [2021-11-19 04:56:18,829 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 04:56:18,884 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 04:56:18,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:56:18,893 INFO L158 Benchmark]: Toolchain (without parser) took 157217.02ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 40.3MB in the beginning and 38.6MB in the end (delta: 1.7MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2021-11-19 04:56:18,895 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 41.6MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:56:18,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.20ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 28.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 04:56:18,897 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.26ms. Allocated memory is still 60.8MB. Free memory was 28.4MB in the beginning and 26.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:56:18,897 INFO L158 Benchmark]: Boogie Preprocessor took 38.13ms. Allocated memory is still 60.8MB. Free memory was 26.6MB in the beginning and 25.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:56:18,898 INFO L158 Benchmark]: RCFGBuilder took 7020.43ms. Allocated memory is still 60.8MB. Free memory was 25.2MB in the beginning and 34.3MB in the end (delta: -9.1MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-11-19 04:56:18,899 INFO L158 Benchmark]: TraceAbstraction took 149739.01ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 33.9MB in the beginning and 40.7MB in the end (delta: -6.7MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2021-11-19 04:56:18,900 INFO L158 Benchmark]: Witness Printer took 67.40ms. Allocated memory is still 75.5MB. Free memory was 40.6MB in the beginning and 38.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:56:18,906 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 41.6MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.20ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 28.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.26ms. Allocated memory is still 60.8MB. Free memory was 28.4MB in the beginning and 26.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.13ms. Allocated memory is still 60.8MB. Free memory was 26.6MB in the beginning and 25.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 7020.43ms. Allocated memory is still 60.8MB. Free memory was 25.2MB in the beginning and 34.3MB in the end (delta: -9.1MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * TraceAbstraction took 149739.01ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 33.9MB in the beginning and 40.7MB in the end (delta: -6.7MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Witness Printer took 67.40ms. Allocated memory is still 75.5MB. Free memory was 40.6MB in the beginning and 38.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L93] CALL, EXPR f(IN) [L80] 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)=-1.3358972072601318, \result=-0.9755142331123352, x=-1.3358972072601318] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.3358972072601318, \result=0.24828653037548065, x=-1.3358972072601318] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-1.3358972072601318, x=2.5930886268615723] [L102] reach_error() VAL [IN=-1.3358972072601318, x=2.5930886268615723] - 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 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 149.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, 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, 31 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, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 7.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be incorrect! [2021-11-19 04:56:19,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9b3be4f-b196-434b-b18e-e6c0df9110c2/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE