./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_2+newton_1_3.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_2+newton_1_3.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 b9d0e0bc78588895b656add1d66063876198ef9d2f1361e4e477992579946f34 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:07:13,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:07:13,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:07:13,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:07:13,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:07:13,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:07:13,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:07:13,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:07:13,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:07:13,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:07:13,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:07:13,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:07:13,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:07:13,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:07:13,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:07:13,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:07:13,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:07:13,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:07:13,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:07:13,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:07:13,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:07:13,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:07:13,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:07:13,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:07:13,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:07:13,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:07:13,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:07:13,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:07:13,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:07:13,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:07:13,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:07:13,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:07:13,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:07:13,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:07:13,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:07:13,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:07:13,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:07:13,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:07:13,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:07:13,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:07:13,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:07:13,170 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:07:13,207 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:07:13,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:07:13,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:07:13,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:07:13,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:07:13,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:07:13,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:07:13,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:07:13,211 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:07:13,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:07:13,212 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:07:13,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:07:13,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:07:13,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:07:13,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:07:13,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:07:13,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:07:13,213 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:07:13,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:07:13,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:07:13,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:07:13,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:07:13,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:07:13,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:07:13,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:07:13,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:07:13,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:07:13,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:07:13,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:07:13,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:07:13,216 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:07:13,216 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:07:13,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:07:13,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:07:13,216 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d0e0bc78588895b656add1d66063876198ef9d2f1361e4e477992579946f34 [2021-12-16 02:07:13,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:07:13,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:07:13,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:07:13,479 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:07:13,479 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:07:13,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_3.i [2021-12-16 02:07:13,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5df6d9e/767f6f1c404b470db4749f2efae143d4/FLAG49cb1dc69 [2021-12-16 02:07:13,962 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:07:13,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_3.i [2021-12-16 02:07:13,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5df6d9e/767f6f1c404b470db4749f2efae143d4/FLAG49cb1dc69 [2021-12-16 02:07:14,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5df6d9e/767f6f1c404b470db4749f2efae143d4 [2021-12-16 02:07:14,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:07:14,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:07:14,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:07:14,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:07:14,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:07:14,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:07:14" (1/1) ... [2021-12-16 02:07:14,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783740a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14, skipping insertion in model container [2021-12-16 02:07:14,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:07:14" (1/1) ... [2021-12-16 02:07:14,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:07:14,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:07:14,597 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_2+newton_1_3.i[1226,1239] [2021-12-16 02:07:14,637 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_2+newton_1_3.i[2820,2833] [2021-12-16 02:07:14,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:07:14,647 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:07:14,664 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_2+newton_1_3.i[1226,1239] [2021-12-16 02:07:14,685 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_2+newton_1_3.i[2820,2833] [2021-12-16 02:07:14,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:07:14,700 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:07:14,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14 WrapperNode [2021-12-16 02:07:14,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:07:14,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:07:14,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:07:14,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:07:14,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14" (1/1) ... [2021-12-16 02:07:14,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14" (1/1) ... [2021-12-16 02:07:14,748 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-16 02:07:14,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:07:14,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:07:14,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:07:14,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:07:14,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14" (1/1) ... [2021-12-16 02:07:14,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14" (1/1) ... [2021-12-16 02:07:14,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14" (1/1) ... [2021-12-16 02:07:14,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14" (1/1) ... [2021-12-16 02:07:14,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14" (1/1) ... [2021-12-16 02:07:14,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14" (1/1) ... [2021-12-16 02:07:14,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14" (1/1) ... [2021-12-16 02:07:14,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:07:14,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:07:14,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:07:14,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:07:14,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14" (1/1) ... [2021-12-16 02:07:14,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:07:14,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:07:14,820 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) [2021-12-16 02:07:14,847 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 [2021-12-16 02:07:14,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:07:14,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:07:14,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:07:14,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:07:14,930 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:07:14,932 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:07:15,128 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:07:15,133 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:07:15,133 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 02:07:15,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:15 BoogieIcfgContainer [2021-12-16 02:07:15,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:07:15,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:07:15,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:07:15,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:07:15,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:07:14" (1/3) ... [2021-12-16 02:07:15,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fde45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:07:15, skipping insertion in model container [2021-12-16 02:07:15,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:14" (2/3) ... [2021-12-16 02:07:15,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fde45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:07:15, skipping insertion in model container [2021-12-16 02:07:15,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:15" (3/3) ... [2021-12-16 02:07:15,153 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_3.i [2021-12-16 02:07:15,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:07:15,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:07:15,204 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:07:15,209 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 [2021-12-16 02:07:15,209 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:07:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:07:15,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 02:07:15,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:07:15,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:07:15,235 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:07:15,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:07:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-16 02:07:15,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:07:15,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092908422] [2021-12-16 02:07:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:07:15,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:07:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:07:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:07:15,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:07:15,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092908422] [2021-12-16 02:07:15,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092908422] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:07:15,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:07:15,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:07:15,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861019031] [2021-12-16 02:07:15,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:07:15,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:07:15,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:07:15,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:07:15,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:07:15,391 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:07:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:07:15,406 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-16 02:07:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:07:15,409 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 [2021-12-16 02:07:15,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:07:15,416 INFO L225 Difference]: With dead ends: 47 [2021-12-16 02:07:15,416 INFO L226 Difference]: Without dead ends: 19 [2021-12-16 02:07:15,418 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 [2021-12-16 02:07:15,422 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:07:15,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:07:15,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-16 02:07:15,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-16 02:07:15,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:07:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-16 02:07:15,456 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-16 02:07:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:07:15,456 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-16 02:07:15,457 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) [2021-12-16 02:07:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-16 02:07:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 02:07:15,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:07:15,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:07:15,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:07:15,460 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:07:15,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:07:15,463 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-16 02:07:15,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:07:15,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690834394] [2021-12-16 02:07:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:07:15,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:07:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:07:15,489 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 02:07:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:07:15,526 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 02:07:15,527 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 02:07:15,528 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-16 02:07:15,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-16 02:07:15,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:07:15,534 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-16 02:07:15,536 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:07:15,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:07:15 BoogieIcfgContainer [2021-12-16 02:07:15,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:07:15,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:07:15,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:07:15,562 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:07:15,562 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:15" (3/4) ... [2021-12-16 02:07:15,565 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 02:07:15,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:07:15,566 INFO L158 Benchmark]: Toolchain (without parser) took 1202.98ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 58.8MB in the beginning and 54.4MB in the end (delta: 4.3MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2021-12-16 02:07:15,567 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory was 47.2MB in the beginning and 47.2MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:07:15,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.37ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 58.5MB in the beginning and 91.3MB in the end (delta: -32.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 02:07:15,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.12ms. Allocated memory is still 115.3MB. Free memory was 91.3MB in the beginning and 89.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:07:15,572 INFO L158 Benchmark]: Boogie Preprocessor took 38.01ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 87.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:07:15,572 INFO L158 Benchmark]: RCFGBuilder took 346.37ms. Allocated memory is still 115.3MB. Free memory was 87.9MB in the beginning and 77.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 02:07:15,573 INFO L158 Benchmark]: TraceAbstraction took 425.04ms. Allocated memory is still 115.3MB. Free memory was 77.2MB in the beginning and 54.4MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-16 02:07:15,573 INFO L158 Benchmark]: Witness Printer took 3.35ms. Allocated memory is still 115.3MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:07:15,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory was 47.2MB in the beginning and 47.2MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.37ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 58.5MB in the beginning and 91.3MB in the end (delta: -32.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.12ms. Allocated memory is still 115.3MB. Free memory was 91.3MB in the beginning and 89.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.01ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 87.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 346.37ms. Allocated memory is still 115.3MB. Free memory was 87.9MB in the beginning and 77.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 425.04ms. Allocated memory is still 115.3MB. Free memory was 77.2MB in the beginning and 54.4MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.35ms. Allocated memory is still 115.3MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 [2021-12-16 02:07:15,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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=/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_2+newton_1_3.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 b9d0e0bc78588895b656add1d66063876198ef9d2f1361e4e477992579946f34 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:07:17,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:07:17,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:07:17,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:07:17,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:07:17,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:07:17,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:07:17,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:07:17,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:07:17,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:07:17,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:07:17,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:07:17,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:07:17,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:07:17,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:07:17,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:07:17,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:07:17,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:07:17,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:07:17,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:07:17,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:07:17,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:07:17,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:07:17,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:07:17,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:07:17,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:07:17,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:07:17,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:07:17,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:07:17,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:07:17,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:07:17,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:07:17,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:07:17,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:07:17,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:07:17,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:07:17,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:07:17,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:07:17,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:07:17,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:07:17,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:07:17,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-16 02:07:17,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:07:17,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:07:17,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:07:17,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:07:17,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:07:17,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:07:17,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:07:17,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:07:17,628 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:07:17,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:07:17,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:07:17,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:07:17,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:07:17,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:07:17,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:07:17,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:07:17,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 02:07:17,630 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 02:07:17,631 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 02:07:17,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:07:17,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:07:17,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:07:17,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:07:17,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:07:17,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:07:17,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:07:17,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:07:17,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:07:17,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:07:17,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:07:17,633 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 02:07:17,633 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 02:07:17,633 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:07:17,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:07:17,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:07:17,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:07:17,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 02:07:17,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d0e0bc78588895b656add1d66063876198ef9d2f1361e4e477992579946f34 [2021-12-16 02:07:17,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:07:17,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:07:17,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:07:17,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:07:17,960 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:07:17,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_3.i [2021-12-16 02:07:18,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa0a199a/c65c9f543f1246e1a88566c326e229db/FLAGbbedda112 [2021-12-16 02:07:18,451 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:07:18,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_3.i [2021-12-16 02:07:18,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa0a199a/c65c9f543f1246e1a88566c326e229db/FLAGbbedda112 [2021-12-16 02:07:18,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa0a199a/c65c9f543f1246e1a88566c326e229db [2021-12-16 02:07:18,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:07:18,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:07:18,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:07:18,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:07:18,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:07:18,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:07:18" (1/1) ... [2021-12-16 02:07:18,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b457a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:18, skipping insertion in model container [2021-12-16 02:07:18,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:07:18" (1/1) ... [2021-12-16 02:07:18,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:07:18,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:07:19,009 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_2+newton_1_3.i[1226,1239] [2021-12-16 02:07:19,032 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_2+newton_1_3.i[2820,2833] [2021-12-16 02:07:19,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:07:19,043 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:07:19,054 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_2+newton_1_3.i[1226,1239] [2021-12-16 02:07:19,063 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_2+newton_1_3.i[2820,2833] [2021-12-16 02:07:19,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:07:19,088 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:07:19,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19 WrapperNode [2021-12-16 02:07:19,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:07:19,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:07:19,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:07:19,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:07:19,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,138 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-16 02:07:19,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:07:19,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:07:19,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:07:19,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:07:19,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:07:19,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:07:19,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:07:19,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:07:19,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:07:19,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:07:19,224 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) [2021-12-16 02:07:19,231 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 [2021-12-16 02:07:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:07:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 02:07:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:07:19,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:07:19,313 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:07:19,315 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:07:24,487 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:07:24,492 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:07:24,492 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 02:07:24,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:24 BoogieIcfgContainer [2021-12-16 02:07:24,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:07:24,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:07:24,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:07:24,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:07:24,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:07:18" (1/3) ... [2021-12-16 02:07:24,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5b35d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:07:24, skipping insertion in model container [2021-12-16 02:07:24,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (2/3) ... [2021-12-16 02:07:24,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5b35d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:07:24, skipping insertion in model container [2021-12-16 02:07:24,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:24" (3/3) ... [2021-12-16 02:07:24,500 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_3.i [2021-12-16 02:07:24,506 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:07:24,506 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:07:24,573 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:07:24,580 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 [2021-12-16 02:07:24,580 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:07:24,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:07:24,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 02:07:24,609 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:07:24,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:07:24,610 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:07:24,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:07:24,614 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-16 02:07:24,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 02:07:24,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209409034] [2021-12-16 02:07:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:07:24,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 02:07:24,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 02:07:24,624 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) [2021-12-16 02:07:24,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 02:07:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:07:25,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 02:07:25,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:07:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:07:25,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:07:25,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 02:07:25,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209409034] [2021-12-16 02:07:25,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209409034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:07:25,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:07:25,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:07:25,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388100817] [2021-12-16 02:07:25,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:07:25,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:07:25,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 02:07:25,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:07:25,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:07:25,584 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:07:25,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:07:25,596 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-16 02:07:25,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:07:25,598 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 [2021-12-16 02:07:25,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:07:25,604 INFO L225 Difference]: With dead ends: 47 [2021-12-16 02:07:25,604 INFO L226 Difference]: Without dead ends: 19 [2021-12-16 02:07:25,607 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 [2021-12-16 02:07:25,610 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:07:25,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:07:25,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-16 02:07:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-16 02:07:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:07:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-16 02:07:25,634 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-16 02:07:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:07:25,634 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-16 02:07:25,634 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) [2021-12-16 02:07:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-16 02:07:25,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 02:07:25,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:07:25,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:07:25,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-16 02:07:25,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 02:07:25,848 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:07:25,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:07:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-16 02:07:25,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 02:07:25,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009105648] [2021-12-16 02:07:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:07:25,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 02:07:25,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 02:07:25,851 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) [2021-12-16 02:07:25,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process