./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_4+newton_1_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_4+newton_1_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 6350103920575a4c7a5643f51f7bc8e829a7fbf85ea9b0288d4dadd8696b7030 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 20:08:09,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 20:08:09,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 20:08:09,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 20:08:09,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 20:08:09,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 20:08:09,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 20:08:09,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 20:08:09,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 20:08:09,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 20:08:09,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 20:08:09,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 20:08:09,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 20:08:09,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 20:08:09,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 20:08:09,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 20:08:09,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 20:08:09,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 20:08:09,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 20:08:09,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 20:08:09,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 20:08:09,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 20:08:09,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 20:08:09,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 20:08:09,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 20:08:09,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 20:08:09,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 20:08:09,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 20:08:09,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 20:08:09,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 20:08:09,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 20:08:09,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 20:08:09,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 20:08:09,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 20:08:09,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 20:08:09,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 20:08:09,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 20:08:09,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 20:08:09,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 20:08:09,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 20:08:09,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 20:08:09,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 20:08:09,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 20:08:09,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 20:08:09,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 20:08:09,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 20:08:09,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 20:08:09,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 20:08:09,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 20:08:09,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 20:08:09,993 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 20:08:09,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 20:08:09,993 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 20:08:09,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 20:08:09,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 20:08:09,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 20:08:09,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 20:08:09,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 20:08:09,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 20:08:09,994 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 20:08:09,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 20:08:09,995 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 20:08:09,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 20:08:09,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 20:08:09,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 20:08:09,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 20:08:09,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 20:08:09,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 20:08:09,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 20:08:09,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 20:08:09,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 20:08:09,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 20:08:09,996 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 20:08:09,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 20:08:09,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 20:08:09,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 20:08:09,997 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6350103920575a4c7a5643f51f7bc8e829a7fbf85ea9b0288d4dadd8696b7030 [2021-12-17 20:08:10,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 20:08:10,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 20:08:10,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 20:08:10,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 20:08:10,193 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 20:08:10,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_1.i [2021-12-17 20:08:10,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/289c01307/947ab66c7fbc4c04bf21c7b93feb7e96/FLAGd6a158cb9 [2021-12-17 20:08:10,572 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 20:08:10,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i [2021-12-17 20:08:10,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/289c01307/947ab66c7fbc4c04bf21c7b93feb7e96/FLAGd6a158cb9 [2021-12-17 20:08:11,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/289c01307/947ab66c7fbc4c04bf21c7b93feb7e96 [2021-12-17 20:08:11,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 20:08:11,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 20:08:11,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 20:08:11,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 20:08:11,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 20:08:11,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:08:11" (1/1) ... [2021-12-17 20:08:11,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b55edf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11, skipping insertion in model container [2021-12-17 20:08:11,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:08:11" (1/1) ... [2021-12-17 20:08:11,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 20:08:11,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 20:08:11,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[1224,1237] [2021-12-17 20:08:11,192 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[2806,2819] [2021-12-17 20:08:11,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 20:08:11,198 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 20:08:11,205 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[1224,1237] [2021-12-17 20:08:11,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[2806,2819] [2021-12-17 20:08:11,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 20:08:11,226 INFO L208 MainTranslator]: Completed translation [2021-12-17 20:08:11,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11 WrapperNode [2021-12-17 20:08:11,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 20:08:11,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 20:08:11,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 20:08:11,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 20:08:11,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11" (1/1) ... [2021-12-17 20:08:11,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11" (1/1) ... [2021-12-17 20:08:11,255 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2021-12-17 20:08:11,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 20:08:11,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 20:08:11,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 20:08:11,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 20:08:11,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11" (1/1) ... [2021-12-17 20:08:11,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11" (1/1) ... [2021-12-17 20:08:11,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11" (1/1) ... [2021-12-17 20:08:11,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11" (1/1) ... [2021-12-17 20:08:11,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11" (1/1) ... [2021-12-17 20:08:11,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11" (1/1) ... [2021-12-17 20:08:11,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11" (1/1) ... [2021-12-17 20:08:11,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 20:08:11,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 20:08:11,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 20:08:11,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 20:08:11,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11" (1/1) ... [2021-12-17 20:08:11,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 20:08:11,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 20:08:11,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 20:08:11,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 20:08:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 20:08:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 20:08:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 20:08:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 20:08:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 20:08:11,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 20:08:11,367 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 20:08:11,368 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 20:08:11,471 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 20:08:11,475 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 20:08:11,475 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 20:08:11,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:08:11 BoogieIcfgContainer [2021-12-17 20:08:11,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 20:08:11,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 20:08:11,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 20:08:11,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 20:08:11,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 08:08:11" (1/3) ... [2021-12-17 20:08:11,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d68f02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:08:11, skipping insertion in model container [2021-12-17 20:08:11,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:11" (2/3) ... [2021-12-17 20:08:11,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d68f02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:08:11, skipping insertion in model container [2021-12-17 20:08:11,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:08:11" (3/3) ... [2021-12-17 20:08:11,493 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_1.i [2021-12-17 20:08:11,496 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 20:08:11,496 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 20:08:11,528 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 20:08:11,550 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 [2021-12-17 20:08:11,550 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 20:08:11,562 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) [2021-12-17 20:08:11,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-17 20:08:11,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 20:08:11,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 20:08:11,566 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 20:08:11,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 20:08:11,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-12-17 20:08:11,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 20:08:11,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244817737] [2021-12-17 20:08:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 20:08:11,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 20:08:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 20:08:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 20:08:11,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 20:08:11,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244817737] [2021-12-17 20:08:11,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244817737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 20:08:11,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 20:08:11,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 20:08:11,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176880100] [2021-12-17 20:08:11,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 20:08:11,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 20:08:11,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 20:08:11,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 20:08:11,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 20:08:11,701 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) [2021-12-17 20:08:11,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 20:08:11,720 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-12-17 20:08:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 20:08:11,722 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 [2021-12-17 20:08:11,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 20:08:11,727 INFO L225 Difference]: With dead ends: 57 [2021-12-17 20:08:11,727 INFO L226 Difference]: Without dead ends: 26 [2021-12-17 20:08:11,730 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 [2021-12-17 20:08:11,733 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 [2021-12-17 20:08:11,734 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] [2021-12-17 20:08:11,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-17 20:08:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-17 20:08:11,754 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) [2021-12-17 20:08:11,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-12-17 20:08:11,762 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-12-17 20:08:11,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 20:08:11,763 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-12-17 20:08:11,763 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) [2021-12-17 20:08:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-12-17 20:08:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-17 20:08:11,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 20:08:11,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 20:08:11,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 20:08:11,764 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 20:08:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 20:08:11,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-12-17 20:08:11,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 20:08:11,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246111679] [2021-12-17 20:08:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 20:08:11,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 20:08:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 20:08:11,775 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 20:08:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 20:08:11,793 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 20:08:11,793 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 20:08:11,794 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-17 20:08:11,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-17 20:08:11,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 20:08:11,797 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 20:08:11,799 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 20:08:11,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 08:08:11 BoogieIcfgContainer [2021-12-17 20:08:11,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 20:08:11,816 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 20:08:11,816 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 20:08:11,816 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 20:08:11,817 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:08:11" (3/4) ... [2021-12-17 20:08:11,819 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-17 20:08:11,819 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 20:08:11,821 INFO L158 Benchmark]: Toolchain (without parser) took 794.30ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 64.8MB in the beginning and 62.5MB in the end (delta: 2.4MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2021-12-17 20:08:11,822 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 20:08:11,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.34ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 64.5MB in the beginning and 99.5MB in the end (delta: -35.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 20:08:11,825 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.99ms. Allocated memory is still 125.8MB. Free memory was 99.5MB in the beginning and 98.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 20:08:11,826 INFO L158 Benchmark]: Boogie Preprocessor took 14.50ms. Allocated memory is still 125.8MB. Free memory was 98.0MB in the beginning and 96.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 20:08:11,826 INFO L158 Benchmark]: RCFGBuilder took 208.57ms. Allocated memory is still 125.8MB. Free memory was 96.7MB in the beginning and 86.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 20:08:11,827 INFO L158 Benchmark]: TraceAbstraction took 334.15ms. Allocated memory is still 125.8MB. Free memory was 85.5MB in the beginning and 62.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-17 20:08:11,827 INFO L158 Benchmark]: Witness Printer took 3.67ms. Allocated memory is still 125.8MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 20:08:11,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.34ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 64.5MB in the beginning and 99.5MB in the end (delta: -35.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.99ms. Allocated memory is still 125.8MB. Free memory was 99.5MB in the beginning and 98.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.50ms. Allocated memory is still 125.8MB. Free memory was 98.0MB in the beginning and 96.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 208.57ms. Allocated memory is still 125.8MB. Free memory was 96.7MB in the beginning and 86.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 334.15ms. Allocated memory is still 125.8MB. Free memory was 85.5MB in the beginning and 62.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.67ms. Allocated memory is still 125.8MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 100. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.2f && IN < 0.2f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -0.2f && IN < 0.2f) [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 [2021-12-17 20:08:11,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_4+newton_1_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 6350103920575a4c7a5643f51f7bc8e829a7fbf85ea9b0288d4dadd8696b7030 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 20:08:13,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 20:08:13,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 20:08:13,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 20:08:13,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 20:08:13,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 20:08:13,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 20:08:13,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 20:08:13,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 20:08:13,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 20:08:13,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 20:08:13,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 20:08:13,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 20:08:13,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 20:08:13,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 20:08:13,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 20:08:13,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 20:08:13,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 20:08:13,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 20:08:13,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 20:08:13,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 20:08:13,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 20:08:13,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 20:08:13,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 20:08:13,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 20:08:13,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 20:08:13,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 20:08:13,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 20:08:13,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 20:08:13,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 20:08:13,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 20:08:13,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 20:08:13,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 20:08:13,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 20:08:13,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 20:08:13,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 20:08:13,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 20:08:13,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 20:08:13,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 20:08:13,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 20:08:13,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 20:08:13,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-17 20:08:13,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 20:08:13,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 20:08:13,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 20:08:13,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 20:08:13,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 20:08:13,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 20:08:13,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 20:08:13,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 20:08:13,545 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 20:08:13,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 20:08:13,546 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 20:08:13,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 20:08:13,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 20:08:13,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 20:08:13,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 20:08:13,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 20:08:13,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-17 20:08:13,547 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-17 20:08:13,547 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-17 20:08:13,547 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 20:08:13,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 20:08:13,547 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 20:08:13,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 20:08:13,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 20:08:13,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 20:08:13,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 20:08:13,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 20:08:13,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 20:08:13,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 20:08:13,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 20:08:13,556 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-17 20:08:13,556 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-17 20:08:13,556 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 20:08:13,556 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 20:08:13,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 20:08:13,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 20:08:13,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-17 20:08:13,557 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6350103920575a4c7a5643f51f7bc8e829a7fbf85ea9b0288d4dadd8696b7030 [2021-12-17 20:08:13,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 20:08:13,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 20:08:13,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 20:08:13,791 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 20:08:13,791 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 20:08:13,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_1.i [2021-12-17 20:08:13,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2c15c53/3ae38ed26c564a76a5139e629422d1d0/FLAG40074eddd [2021-12-17 20:08:14,190 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 20:08:14,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i [2021-12-17 20:08:14,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2c15c53/3ae38ed26c564a76a5139e629422d1d0/FLAG40074eddd [2021-12-17 20:08:14,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2c15c53/3ae38ed26c564a76a5139e629422d1d0 [2021-12-17 20:08:14,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 20:08:14,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 20:08:14,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 20:08:14,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 20:08:14,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 20:08:14,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:08:14" (1/1) ... [2021-12-17 20:08:14,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cd3f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14, skipping insertion in model container [2021-12-17 20:08:14,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:08:14" (1/1) ... [2021-12-17 20:08:14,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 20:08:14,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 20:08:14,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[1224,1237] [2021-12-17 20:08:14,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[2806,2819] [2021-12-17 20:08:14,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 20:08:14,355 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 20:08:14,362 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[1224,1237] [2021-12-17 20:08:14,390 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[2806,2819] [2021-12-17 20:08:14,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 20:08:14,413 INFO L208 MainTranslator]: Completed translation [2021-12-17 20:08:14,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14 WrapperNode [2021-12-17 20:08:14,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 20:08:14,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 20:08:14,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 20:08:14,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 20:08:14,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14" (1/1) ... [2021-12-17 20:08:14,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14" (1/1) ... [2021-12-17 20:08:14,447 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2021-12-17 20:08:14,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 20:08:14,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 20:08:14,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 20:08:14,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 20:08:14,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14" (1/1) ... [2021-12-17 20:08:14,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14" (1/1) ... [2021-12-17 20:08:14,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14" (1/1) ... [2021-12-17 20:08:14,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14" (1/1) ... [2021-12-17 20:08:14,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14" (1/1) ... [2021-12-17 20:08:14,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14" (1/1) ... [2021-12-17 20:08:14,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14" (1/1) ... [2021-12-17 20:08:14,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 20:08:14,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 20:08:14,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 20:08:14,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 20:08:14,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14" (1/1) ... [2021-12-17 20:08:14,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 20:08:14,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 20:08:14,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 20:08:14,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 20:08:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 20:08:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-17 20:08:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 20:08:14,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 20:08:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 20:08:14,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 20:08:14,595 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 20:08:14,596 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 20:08:21,310 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 20:08:21,314 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 20:08:21,314 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 20:08:21,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:08:21 BoogieIcfgContainer [2021-12-17 20:08:21,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 20:08:21,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 20:08:21,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 20:08:21,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 20:08:21,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 08:08:14" (1/3) ... [2021-12-17 20:08:21,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a567637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:08:21, skipping insertion in model container [2021-12-17 20:08:21,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:08:14" (2/3) ... [2021-12-17 20:08:21,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a567637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:08:21, skipping insertion in model container [2021-12-17 20:08:21,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:08:21" (3/3) ... [2021-12-17 20:08:21,320 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_1.i [2021-12-17 20:08:21,323 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 20:08:21,323 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 20:08:21,357 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 20:08:21,361 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 [2021-12-17 20:08:21,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 20:08:21,370 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) [2021-12-17 20:08:21,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-17 20:08:21,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 20:08:21,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 20:08:21,373 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 20:08:21,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 20:08:21,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-12-17 20:08:21,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 20:08:21,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790312893] [2021-12-17 20:08:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 20:08:21,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 20:08:21,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 20:08:21,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 20:08:21,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-17 20:08:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 20:08:22,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 20:08:22,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 20:08:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 20:08:22,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 20:08:22,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 20:08:22,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790312893] [2021-12-17 20:08:22,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790312893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 20:08:22,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 20:08:22,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 20:08:22,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293417754] [2021-12-17 20:08:22,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 20:08:22,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 20:08:22,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 20:08:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 20:08:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 20:08:22,307 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) [2021-12-17 20:08:22,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 20:08:22,319 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-12-17 20:08:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 20:08:22,320 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 [2021-12-17 20:08:22,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 20:08:22,325 INFO L225 Difference]: With dead ends: 57 [2021-12-17 20:08:22,325 INFO L226 Difference]: Without dead ends: 26 [2021-12-17 20:08:22,327 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 [2021-12-17 20:08:22,329 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 [2021-12-17 20:08:22,330 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] [2021-12-17 20:08:22,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-17 20:08:22,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-17 20:08:22,349 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) [2021-12-17 20:08:22,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-12-17 20:08:22,351 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-12-17 20:08:22,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 20:08:22,351 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-12-17 20:08:22,351 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) [2021-12-17 20:08:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-12-17 20:08:22,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-17 20:08:22,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 20:08:22,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 20:08:22,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-17 20:08:22,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 20:08:22,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 20:08:22,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 20:08:22,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-12-17 20:08:22,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 20:08:22,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285067386] [2021-12-17 20:08:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 20:08:22,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 20:08:22,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 20:08:22,572 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 20:08:22,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process Killed by 15