./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa --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 8d5852a96a997fd819a9dfc3e184ca8c6360d14970e60ecfb10d610384c98f94 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:44:29,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:44:29,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:44:29,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:44:29,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:44:29,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:44:29,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:44:29,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:44:29,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:44:29,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:44:29,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:44:29,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:44:29,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:44:29,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:44:29,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:44:29,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:44:29,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:44:29,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:44:29,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:44:29,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:44:29,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:44:29,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:44:29,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:44:29,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:44:29,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:44:29,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:44:29,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:44:29,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:44:29,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:44:29,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:44:29,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:44:29,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:44:29,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:44:29,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:44:29,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:44:29,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:44:29,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:44:29,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:44:29,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:44:29,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:44:29,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:44:29,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:44:30,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:44:30,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:44:30,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:44:30,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:44:30,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:44:30,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:44:30,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:44:30,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:44:30,026 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:44:30,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:44:30,026 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:44:30,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:44:30,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:44:30,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:44:30,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:44:30,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:44:30,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:44:30,028 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:44:30,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:44:30,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:44:30,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:44:30,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:44:30,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:44:30,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:44:30,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:44:30,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:44:30,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:44:30,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:44:30,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:44:30,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:44:30,030 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:44:30,031 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:44:30,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:44:30,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:44:30,031 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_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d5852a96a997fd819a9dfc3e184ca8c6360d14970e60ecfb10d610384c98f94 [2021-12-06 23:44:30,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:44:30,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:44:30,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:44:30,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:44:30,229 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:44:30,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/gcd_4+newton_1_6.i [2021-12-06 23:44:30,269 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/data/4d7c0bb03/3ab24677ba8c4ff9a633d7c9bf74c5ea/FLAG147760cba [2021-12-06 23:44:30,654 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:44:30,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i [2021-12-06 23:44:30,660 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/data/4d7c0bb03/3ab24677ba8c4ff9a633d7c9bf74c5ea/FLAG147760cba [2021-12-06 23:44:31,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/data/4d7c0bb03/3ab24677ba8c4ff9a633d7c9bf74c5ea [2021-12-06 23:44:31,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:44:31,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:44:31,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:44:31,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:44:31,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:44:31,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:44:31" (1/1) ... [2021-12-06 23:44:31,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b3a1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31, skipping insertion in model container [2021-12-06 23:44:31,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:44:31" (1/1) ... [2021-12-06 23:44:31,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:44:31,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:44:31,194 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_18ac13e1-659e-4733-88bf-8448c2ee07ca/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[1224,1237] [2021-12-06 23:44:31,212 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_18ac13e1-659e-4733-88bf-8448c2ee07ca/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[2806,2819] [2021-12-06 23:44:31,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:44:31,219 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:44:31,228 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_18ac13e1-659e-4733-88bf-8448c2ee07ca/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[1224,1237] [2021-12-06 23:44:31,235 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_18ac13e1-659e-4733-88bf-8448c2ee07ca/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[2806,2819] [2021-12-06 23:44:31,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:44:31,246 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:44:31,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31 WrapperNode [2021-12-06 23:44:31,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:44:31,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:44:31,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:44:31,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:44:31,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31" (1/1) ... [2021-12-06 23:44:31,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31" (1/1) ... [2021-12-06 23:44:31,274 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2021-12-06 23:44:31,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:44:31,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:44:31,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:44:31,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:44:31,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31" (1/1) ... [2021-12-06 23:44:31,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31" (1/1) ... [2021-12-06 23:44:31,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31" (1/1) ... [2021-12-06 23:44:31,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31" (1/1) ... [2021-12-06 23:44:31,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31" (1/1) ... [2021-12-06 23:44:31,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31" (1/1) ... [2021-12-06 23:44:31,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31" (1/1) ... [2021-12-06 23:44:31,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:44:31,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:44:31,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:44:31,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:44:31,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31" (1/1) ... [2021-12-06 23:44:31,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:44:31,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:44:31,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:44:31,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:44:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:44:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:44:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:44:31,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:44:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 23:44:31,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 23:44:31,398 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:44:31,399 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:44:31,493 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:44:31,497 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:44:31,498 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 23:44:31,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:44:31 BoogieIcfgContainer [2021-12-06 23:44:31,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:44:31,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:44:31,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:44:31,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:44:31,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:44:31" (1/3) ... [2021-12-06 23:44:31,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e85eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:44:31, skipping insertion in model container [2021-12-06 23:44:31,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:31" (2/3) ... [2021-12-06 23:44:31,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e85eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:44:31, skipping insertion in model container [2021-12-06 23:44:31,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:44:31" (3/3) ... [2021-12-06 23:44:31,507 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_6.i [2021-12-06 23:44:31,512 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:44:31,513 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 23:44:31,562 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:44:31,568 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 [2021-12-06 23:44:31,568 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 23:44:31,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 23:44:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 23:44:31,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:44:31,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:44:31,592 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:44:31,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:44:31,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-12-06 23:44:31,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:44:31,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876724170] [2021-12-06 23:44:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:44:31,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:44:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:44:31,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:44:31,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876724170] [2021-12-06 23:44:31,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876724170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:44:31,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:44:31,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:44:31,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933975785] [2021-12-06 23:44:31,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:44:31,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:44:31,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:44:31,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:44:31,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:44:31,757 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:44:31,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:44:31,774 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-12-06 23:44:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:44:31,776 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 [2021-12-06 23:44:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:44:31,784 INFO L225 Difference]: With dead ends: 57 [2021-12-06 23:44:31,785 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 23:44:31,788 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 [2021-12-06 23:44:31,792 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:44:31,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:44:31,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 23:44:31,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-06 23:44:31,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:44:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-12-06 23:44:31,832 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-12-06 23:44:31,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:44:31,832 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-12-06 23:44:31,832 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) [2021-12-06 23:44:31,833 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-12-06 23:44:31,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 23:44:31,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:44:31,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:44:31,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:44:31,834 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:44:31,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:44:31,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-12-06 23:44:31,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:44:31,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103971099] [2021-12-06 23:44:31,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:44:31,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:44:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:44:31,853 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:44:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:44:31,885 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:44:31,886 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:44:31,888 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-06 23:44:31,890 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-06 23:44:31,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:44:31,894 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 23:44:31,897 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:44:31,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:44:31 BoogieIcfgContainer [2021-12-06 23:44:31,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:44:31,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:44:31,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:44:31,922 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:44:31,922 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:44:31" (3/4) ... [2021-12-06 23:44:31,925 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 23:44:31,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:44:31,926 INFO L158 Benchmark]: Toolchain (without parser) took 873.47ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 47.7MB in the beginning and 63.6MB in the end (delta: -15.8MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. [2021-12-06 23:44:31,927 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory was 63.9MB in the beginning and 63.9MB in the end (delta: 16.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:44:31,928 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.95ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 47.5MB in the beginning and 75.8MB in the end (delta: -28.2MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-12-06 23:44:31,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.82ms. Allocated memory is still 100.7MB. Free memory was 75.8MB in the beginning and 73.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:44:31,929 INFO L158 Benchmark]: Boogie Preprocessor took 18.02ms. Allocated memory is still 100.7MB. Free memory was 73.9MB in the beginning and 72.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:44:31,929 INFO L158 Benchmark]: RCFGBuilder took 206.00ms. Allocated memory is still 100.7MB. Free memory was 72.8MB in the beginning and 62.4MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 23:44:31,930 INFO L158 Benchmark]: TraceAbstraction took 420.51ms. Allocated memory is still 100.7MB. Free memory was 62.0MB in the beginning and 63.6MB in the end (delta: -1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:44:31,930 INFO L158 Benchmark]: Witness Printer took 3.78ms. Allocated memory is still 100.7MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:44:31,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory was 63.9MB in the beginning and 63.9MB in the end (delta: 16.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.95ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 47.5MB in the beginning and 75.8MB in the end (delta: -28.2MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.82ms. Allocated memory is still 100.7MB. Free memory was 75.8MB in the beginning and 73.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.02ms. Allocated memory is still 100.7MB. Free memory was 73.9MB in the beginning and 72.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 206.00ms. Allocated memory is still 100.7MB. Free memory was 72.8MB in the beginning and 62.4MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 420.51ms. Allocated memory is still 100.7MB. Free memory was 62.0MB in the beginning and 63.6MB in the end (delta: -1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.78ms. Allocated memory is still 100.7MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 100. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=49] [L109] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 [2021-12-06 23:44:31,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/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_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa --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 8d5852a96a997fd819a9dfc3e184ca8c6360d14970e60ecfb10d610384c98f94 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:44:33,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:44:33,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:44:33,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:44:33,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:44:33,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:44:33,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:44:33,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:44:33,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:44:33,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:44:33,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:44:33,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:44:33,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:44:33,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:44:33,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:44:33,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:44:33,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:44:33,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:44:33,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:44:33,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:44:33,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:44:33,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:44:33,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:44:33,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:44:33,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:44:33,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:44:33,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:44:33,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:44:33,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:44:33,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:44:33,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:44:33,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:44:33,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:44:33,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:44:33,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:44:33,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:44:33,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:44:33,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:44:33,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:44:33,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:44:33,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:44:33,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 23:44:33,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:44:33,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:44:33,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:44:33,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:44:33,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:44:33,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:44:33,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:44:33,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:44:33,857 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:44:33,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:44:33,857 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:44:33,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:44:33,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:44:33,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:44:33,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:44:33,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:44:33,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:44:33,858 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 23:44:33,859 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 23:44:33,859 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:44:33,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:44:33,859 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:44:33,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:44:33,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:44:33,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:44:33,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:44:33,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:44:33,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:44:33,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:44:33,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:44:33,861 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 23:44:33,861 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 23:44:33,861 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:44:33,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:44:33,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:44:33,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:44:33,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 23:44:33,862 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_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d5852a96a997fd819a9dfc3e184ca8c6360d14970e60ecfb10d610384c98f94 [2021-12-06 23:44:34,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:44:34,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:44:34,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:44:34,154 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:44:34,155 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:44:34,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/gcd_4+newton_1_6.i [2021-12-06 23:44:34,195 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/data/668877ce5/f945df8a27254bc2ae5db002f394cd39/FLAGf80c6193e [2021-12-06 23:44:34,561 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:44:34,562 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i [2021-12-06 23:44:34,569 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/data/668877ce5/f945df8a27254bc2ae5db002f394cd39/FLAGf80c6193e [2021-12-06 23:44:34,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/data/668877ce5/f945df8a27254bc2ae5db002f394cd39 [2021-12-06 23:44:34,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:44:34,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:44:34,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:44:34,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:44:34,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:44:34,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:44:34" (1/1) ... [2021-12-06 23:44:34,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7239b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34, skipping insertion in model container [2021-12-06 23:44:34,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:44:34" (1/1) ... [2021-12-06 23:44:34,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:44:34,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:44:34,722 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_18ac13e1-659e-4733-88bf-8448c2ee07ca/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[1224,1237] [2021-12-06 23:44:34,742 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_18ac13e1-659e-4733-88bf-8448c2ee07ca/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[2806,2819] [2021-12-06 23:44:34,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:44:34,758 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:44:34,773 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_18ac13e1-659e-4733-88bf-8448c2ee07ca/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[1224,1237] [2021-12-06 23:44:34,785 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_18ac13e1-659e-4733-88bf-8448c2ee07ca/sv-benchmarks/c/combinations/gcd_4+newton_1_6.i[2806,2819] [2021-12-06 23:44:34,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:44:34,798 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:44:34,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34 WrapperNode [2021-12-06 23:44:34,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:44:34,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:44:34,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:44:34,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:44:34,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34" (1/1) ... [2021-12-06 23:44:34,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34" (1/1) ... [2021-12-06 23:44:34,838 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2021-12-06 23:44:34,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:44:34,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:44:34,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:44:34,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:44:34,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34" (1/1) ... [2021-12-06 23:44:34,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34" (1/1) ... [2021-12-06 23:44:34,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34" (1/1) ... [2021-12-06 23:44:34,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34" (1/1) ... [2021-12-06 23:44:34,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34" (1/1) ... [2021-12-06 23:44:34,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34" (1/1) ... [2021-12-06 23:44:34,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34" (1/1) ... [2021-12-06 23:44:34,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:44:34,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:44:34,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:44:34,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:44:34,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34" (1/1) ... [2021-12-06 23:44:34,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:44:34,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:44:34,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:44:34,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:44:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:44:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 23:44:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:44:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:44:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 23:44:34,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 23:44:35,008 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:44:35,010 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:44:41,100 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:44:41,105 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:44:41,105 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 23:44:41,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:44:41 BoogieIcfgContainer [2021-12-06 23:44:41,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:44:41,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:44:41,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:44:41,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:44:41,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:44:34" (1/3) ... [2021-12-06 23:44:41,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6027c6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:44:41, skipping insertion in model container [2021-12-06 23:44:41,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:44:34" (2/3) ... [2021-12-06 23:44:41,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6027c6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:44:41, skipping insertion in model container [2021-12-06 23:44:41,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:44:41" (3/3) ... [2021-12-06 23:44:41,118 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_6.i [2021-12-06 23:44:41,122 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:44:41,122 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 23:44:41,157 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:44:41,162 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 [2021-12-06 23:44:41,162 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 23:44:41,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 23:44:41,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 23:44:41,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:44:41,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:44:41,177 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:44:41,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:44:41,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-12-06 23:44:41,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:44:41,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194990706] [2021-12-06 23:44:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:44:41,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:44:41,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:44:41,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:44:41,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 23:44:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:42,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 23:44:42,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:44:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:44:42,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:44:42,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:44:42,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194990706] [2021-12-06 23:44:42,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194990706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:44:42,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:44:42,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:44:42,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472326699] [2021-12-06 23:44:42,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:44:42,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:44:42,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:44:42,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:44:42,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:44:42,375 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:44:42,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:44:42,392 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-12-06 23:44:42,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:44:42,394 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 [2021-12-06 23:44:42,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:44:42,400 INFO L225 Difference]: With dead ends: 57 [2021-12-06 23:44:42,400 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 23:44:42,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:44:42,405 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:44:42,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:44:42,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 23:44:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-06 23:44:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:44:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-12-06 23:44:42,432 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-12-06 23:44:42,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:44:42,432 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-12-06 23:44:42,432 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) [2021-12-06 23:44:42,432 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-12-06 23:44:42,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 23:44:42,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:44:42,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:44:42,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:44:42,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:44:42,635 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:44:42,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:44:42,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-12-06 23:44:42,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:44:42,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782571381] [2021-12-06 23:44:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:44:42,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:44:42,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:44:42,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:44:42,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 23:44:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:44:48,720 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:44:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:44:57,320 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 23:44:57,321 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:44:57,322 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-06 23:44:57,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-06 23:44:57,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 23:44:57,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:44:57,534 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 23:44:57,543 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:44:57,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:44:57 BoogieIcfgContainer [2021-12-06 23:44:57,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:44:57,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:44:57,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:44:57,581 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:44:57,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:44:41" (3/4) ... [2021-12-06 23:44:57,583 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 23:44:57,608 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 23:44:57,608 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:44:57,609 INFO L158 Benchmark]: Toolchain (without parser) took 23024.32ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 28.9MB in the beginning and 47.0MB in the end (delta: -18.1MB). Peak memory consumption was 280.2kB. Max. memory is 16.1GB. [2021-12-06 23:44:57,609 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 52.4MB. Free memory is still 33.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:44:57,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.39ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 28.6MB in the beginning and 52.8MB in the end (delta: -24.1MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-12-06 23:44:57,610 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.89ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 51.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:44:57,610 INFO L158 Benchmark]: Boogie Preprocessor took 30.96ms. Allocated memory is still 71.3MB. Free memory was 50.9MB in the beginning and 49.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:44:57,610 INFO L158 Benchmark]: RCFGBuilder took 6236.73ms. Allocated memory is still 71.3MB. Free memory was 49.5MB in the beginning and 38.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 23:44:57,611 INFO L158 Benchmark]: TraceAbstraction took 16468.01ms. Allocated memory is still 71.3MB. Free memory was 53.5MB in the beginning and 48.6MB in the end (delta: 4.9MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2021-12-06 23:44:57,611 INFO L158 Benchmark]: Witness Printer took 27.06ms. Allocated memory is still 71.3MB. Free memory was 48.6MB in the beginning and 47.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:44:57,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 52.4MB. Free memory is still 33.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.39ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 28.6MB in the beginning and 52.8MB in the end (delta: -24.1MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.89ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 51.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.96ms. Allocated memory is still 71.3MB. Free memory was 50.9MB in the beginning and 49.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 6236.73ms. Allocated memory is still 71.3MB. Free memory was 49.5MB in the beginning and 38.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 16468.01ms. Allocated memory is still 71.3MB. Free memory was 53.5MB in the beginning and 48.6MB in the end (delta: 4.9MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Witness Printer took 27.06ms. Allocated memory is still 71.3MB. Free memory was 48.6MB in the beginning and 47.0MB in the end (delta: 1.7MB). 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: 109]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-1.093648910522461, \result=-0.8890450596809387, x=-1.093648910522461] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.093648910522461, \result=0.463949978351593, x=-1.093648910522461] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-1.093648910522461, x=0.8226031064987183] [L109] reach_error() VAL [IN=-1.093648910522461, x=0.8226031064987183] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 16.4s, 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, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 7.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2021-12-06 23:44:57,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ac13e1-659e-4733-88bf-8448c2ee07ca/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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