./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/gcd02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5fbdf5bf 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/recursive/gcd02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad183272c46520d125e7fadb8bd25966ebd670c1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 22:41:40,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 22:41:40,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 22:41:40,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 22:41:40,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 22:41:40,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 22:41:40,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 22:41:40,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 22:41:40,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 22:41:40,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 22:41:40,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 22:41:40,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 22:41:40,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 22:41:40,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 22:41:40,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 22:41:40,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 22:41:40,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 22:41:40,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 22:41:40,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 22:41:40,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 22:41:40,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 22:41:40,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 22:41:41,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 22:41:41,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 22:41:41,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 22:41:41,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 22:41:41,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 22:41:41,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 22:41:41,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 22:41:41,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 22:41:41,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 22:41:41,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 22:41:41,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 22:41:41,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 22:41:41,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 22:41:41,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 22:41:41,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 22:41:41,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 22:41:41,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 22:41:41,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 22:41:41,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 22:41:41,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-08-30 22:41:41,037 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 22:41:41,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 22:41:41,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 22:41:41,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 22:41:41,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 22:41:41,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 22:41:41,040 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 22:41:41,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 22:41:41,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 22:41:41,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 22:41:41,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 22:41:41,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 22:41:41,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 22:41:41,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-30 22:41:41,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 22:41:41,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-30 22:41:41,042 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-30 22:41:41,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 22:41:41,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-30 22:41:41,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 22:41:41,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-30 22:41:41,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 22:41:41,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 22:41:41,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 22:41:41,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:41:41,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 22:41:41,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 22:41:41,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-30 22:41:41,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 22:41:41,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 22:41:41,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-30 22:41:41,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 22:41:41,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad183272c46520d125e7fadb8bd25966ebd670c1 [2021-08-30 22:41:41,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 22:41:41,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 22:41:41,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 22:41:41,318 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 22:41:41,318 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 22:41:41,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/gcd02.c [2021-08-30 22:41:41,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad085e273/5bba314c1b404928ab45de1fe733a162/FLAG96d8033d9 [2021-08-30 22:41:41,709 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 22:41:41,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c [2021-08-30 22:41:41,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad085e273/5bba314c1b404928ab45de1fe733a162/FLAG96d8033d9 [2021-08-30 22:41:42,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad085e273/5bba314c1b404928ab45de1fe733a162 [2021-08-30 22:41:42,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 22:41:42,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-30 22:41:42,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 22:41:42,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 22:41:42,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 22:41:42,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:41:42" (1/1) ... [2021-08-30 22:41:42,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fed71a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42, skipping insertion in model container [2021-08-30 22:41:42,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:41:42" (1/1) ... [2021-08-30 22:41:42,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 22:41:42,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 22:41:42,197 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[623,636] [2021-08-30 22:41:42,203 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2021-08-30 22:41:42,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:41:42,208 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 22:41:42,215 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[623,636] [2021-08-30 22:41:42,218 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2021-08-30 22:41:42,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:41:42,230 INFO L208 MainTranslator]: Completed translation [2021-08-30 22:41:42,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42 WrapperNode [2021-08-30 22:41:42,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 22:41:42,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-30 22:41:42,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-30 22:41:42,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-30 22:41:42,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42" (1/1) ... [2021-08-30 22:41:42,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42" (1/1) ... [2021-08-30 22:41:42,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-30 22:41:42,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 22:41:42,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 22:41:42,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 22:41:42,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42" (1/1) ... [2021-08-30 22:41:42,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42" (1/1) ... [2021-08-30 22:41:42,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42" (1/1) ... [2021-08-30 22:41:42,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42" (1/1) ... [2021-08-30 22:41:42,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42" (1/1) ... [2021-08-30 22:41:42,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42" (1/1) ... [2021-08-30 22:41:42,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42" (1/1) ... [2021-08-30 22:41:42,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 22:41:42,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 22:41:42,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 22:41:42,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 22:41:42,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42" (1/1) ... [2021-08-30 22:41:42,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:41:42,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:41:42,362 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) [2021-08-30 22:41:42,413 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 [2021-08-30 22:41:42,422 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2021-08-30 22:41:42,423 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2021-08-30 22:41:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 22:41:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 22:41:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2021-08-30 22:41:42,423 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2021-08-30 22:41:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 22:41:42,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 22:41:42,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 22:41:42,563 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-30 22:41:42,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:41:42 BoogieIcfgContainer [2021-08-30 22:41:42,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 22:41:42,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 22:41:42,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 22:41:42,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 22:41:42,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:41:42" (1/3) ... [2021-08-30 22:41:42,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b24daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:41:42, skipping insertion in model container [2021-08-30 22:41:42,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:41:42" (2/3) ... [2021-08-30 22:41:42,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b24daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:41:42, skipping insertion in model container [2021-08-30 22:41:42,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:41:42" (3/3) ... [2021-08-30 22:41:42,571 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd02.c [2021-08-30 22:41:42,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 22:41:42,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-30 22:41:42,614 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 22:41:42,623 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-30 22:41:42,624 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-30 22:41:42,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 30 states have (on average 1.5) internal successors, (45), 36 states have internal predecessors, (45), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 22:41:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 22:41:42,643 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:41:42,644 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:41:42,645 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:41:42,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:41:42,655 INFO L82 PathProgramCache]: Analyzing trace with hash -23952042, now seen corresponding path program 1 times [2021-08-30 22:41:42,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:41:42,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627928502] [2021-08-30 22:41:42,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:42,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:41:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:42,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:41:42,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:41:42,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627928502] [2021-08-30 22:41:42,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627928502] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:41:42,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:41:42,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 22:41:42,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933879230] [2021-08-30 22:41:42,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 22:41:42,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:41:42,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 22:41:42,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 22:41:42,955 INFO L87 Difference]: Start difference. First operand has 44 states, 30 states have (on average 1.5) internal successors, (45), 36 states have internal predecessors, (45), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:41:43,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:41:43,133 INFO L93 Difference]: Finished difference Result 83 states and 105 transitions. [2021-08-30 22:41:43,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 22:41:43,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-30 22:41:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:41:43,139 INFO L225 Difference]: With dead ends: 83 [2021-08-30 22:41:43,139 INFO L226 Difference]: Without dead ends: 32 [2021-08-30 22:41:43,142 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.42ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 22:41:43,144 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 50 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.32ms IncrementalHoareTripleChecker+Time [2021-08-30 22:41:43,145 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 25 Invalid, 181 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 140.32ms Time] [2021-08-30 22:41:43,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-30 22:41:43,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-08-30 22:41:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 26 states have internal predecessors, (28), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 22:41:43,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-08-30 22:41:43,168 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 11 [2021-08-30 22:41:43,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:41:43,169 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-08-30 22:41:43,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:41:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-08-30 22:41:43,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 22:41:43,170 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:41:43,170 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:41:43,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 22:41:43,171 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:41:43,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:41:43,171 INFO L82 PathProgramCache]: Analyzing trace with hash -23952266, now seen corresponding path program 1 times [2021-08-30 22:41:43,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:41:43,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726824994] [2021-08-30 22:41:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:43,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:41:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:41:43,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:41:43,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726824994] [2021-08-30 22:41:43,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726824994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:41:43,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:41:43,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 22:41:43,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684172874] [2021-08-30 22:41:43,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 22:41:43,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:41:43,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 22:41:43,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 22:41:43,217 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:41:43,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:41:43,295 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-08-30 22:41:43,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 22:41:43,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-30 22:41:43,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:41:43,297 INFO L225 Difference]: With dead ends: 32 [2021-08-30 22:41:43,297 INFO L226 Difference]: Without dead ends: 30 [2021-08-30 22:41:43,297 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.71ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 22:41:43,298 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.54ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.61ms IncrementalHoareTripleChecker+Time [2021-08-30 22:41:43,299 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 16 Invalid, 110 Unknown, 0 Unchecked, 1.54ms Time], IncrementalHoareTripleChecker [9 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 58.61ms Time] [2021-08-30 22:41:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-30 22:41:43,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-30 22:41:43,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 22:41:43,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-08-30 22:41:43,314 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2021-08-30 22:41:43,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:41:43,315 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-08-30 22:41:43,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:41:43,315 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-08-30 22:41:43,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 22:41:43,316 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:41:43,316 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:41:43,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 22:41:43,316 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:41:43,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:41:43,317 INFO L82 PathProgramCache]: Analyzing trace with hash 346469594, now seen corresponding path program 1 times [2021-08-30 22:41:43,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:41:43,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971866034] [2021-08-30 22:41:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:43,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:41:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:43,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 22:41:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:41:43,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:41:43,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971866034] [2021-08-30 22:41:43,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971866034] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:41:43,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:41:43,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 22:41:43,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499820915] [2021-08-30 22:41:43,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 22:41:43,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:41:43,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 22:41:43,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-30 22:41:43,388 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:41:43,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:41:43,511 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-08-30 22:41:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 22:41:43,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-08-30 22:41:43,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:41:43,517 INFO L225 Difference]: With dead ends: 42 [2021-08-30 22:41:43,517 INFO L226 Difference]: Without dead ends: 41 [2021-08-30 22:41:43,518 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.95ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-30 22:41:43,524 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.23ms IncrementalHoareTripleChecker+Time [2021-08-30 22:41:43,525 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 14 Invalid, 208 Unknown, 0 Unchecked, 2.70ms Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 94.23ms Time] [2021-08-30 22:41:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-30 22:41:43,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-08-30 22:41:43,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 30 states have internal predecessors, (32), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-30 22:41:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2021-08-30 22:41:43,544 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2021-08-30 22:41:43,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:41:43,545 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2021-08-30 22:41:43,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:41:43,545 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2021-08-30 22:41:43,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 22:41:43,546 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:41:43,546 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:41:43,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 22:41:43,547 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:41:43,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:41:43,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2144344432, now seen corresponding path program 1 times [2021-08-30 22:41:43,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:41:43,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080738658] [2021-08-30 22:41:43,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:43,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:41:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:43,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 22:41:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:41:43,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:41:43,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080738658] [2021-08-30 22:41:43,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080738658] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:41:43,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:41:43,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 22:41:43,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650183660] [2021-08-30 22:41:43,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:41:43,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:41:43,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:41:43,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:41:43,599 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:41:43,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:41:43,636 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2021-08-30 22:41:43,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:41:43,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-30 22:41:43,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:41:43,637 INFO L225 Difference]: With dead ends: 38 [2021-08-30 22:41:43,637 INFO L226 Difference]: Without dead ends: 37 [2021-08-30 22:41:43,638 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:41:43,645 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.01ms IncrementalHoareTripleChecker+Time [2021-08-30 22:41:43,646 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 46 Unknown, 0 Unchecked, 0.94ms Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 26.01ms Time] [2021-08-30 22:41:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-30 22:41:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-30 22:41:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-30 22:41:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2021-08-30 22:41:43,657 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 18 [2021-08-30 22:41:43,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:41:43,657 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2021-08-30 22:41:43,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:41:43,658 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2021-08-30 22:41:43,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 22:41:43,659 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:41:43,659 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:41:43,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 22:41:43,659 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:41:43,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:41:43,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1147675421, now seen corresponding path program 1 times [2021-08-30 22:41:43,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:41:43,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446920596] [2021-08-30 22:41:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:43,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:41:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 22:41:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:43,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:41:43,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:41:43,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446920596] [2021-08-30 22:41:43,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446920596] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:41:43,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106461895] [2021-08-30 22:41:43,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:43,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:41:43,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:41:43,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:41:43,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 22:41:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:43,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 22:41:43,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:41:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:41:44,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 22:41:44,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106461895] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:41:44,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 22:41:44,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 19 [2021-08-30 22:41:44,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300495036] [2021-08-30 22:41:44,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 22:41:44,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:41:44,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 22:41:44,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-08-30 22:41:44,123 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:41:44,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:41:44,264 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-08-30 22:41:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 22:41:44,265 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-30 22:41:44,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:41:44,266 INFO L225 Difference]: With dead ends: 46 [2021-08-30 22:41:44,266 INFO L226 Difference]: Without dead ends: 31 [2021-08-30 22:41:44,266 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 166.55ms TimeCoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-08-30 22:41:44,267 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.48ms IncrementalHoareTripleChecker+Time [2021-08-30 22:41:44,267 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 59 Invalid, 263 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 103.48ms Time] [2021-08-30 22:41:44,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-30 22:41:44,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-08-30 22:41:44,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 22:41:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-08-30 22:41:44,270 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 23 [2021-08-30 22:41:44,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:41:44,270 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-08-30 22:41:44,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:41:44,271 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-08-30 22:41:44,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 22:41:44,271 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:41:44,272 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:41:44,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 22:41:44,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:41:44,493 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:41:44,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:41:44,493 INFO L82 PathProgramCache]: Analyzing trace with hash 207304407, now seen corresponding path program 1 times [2021-08-30 22:41:44,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:41:44,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679261594] [2021-08-30 22:41:44,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:44,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:41:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:44,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 22:41:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:44,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 22:41:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-30 22:41:44,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:41:44,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679261594] [2021-08-30 22:41:44,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679261594] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:41:44,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:41:44,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 22:41:44,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216450683] [2021-08-30 22:41:44,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 22:41:44,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:41:44,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 22:41:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-30 22:41:44,562 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 22:41:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:41:44,685 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-08-30 22:41:44,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 22:41:44,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-08-30 22:41:44,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:41:44,686 INFO L225 Difference]: With dead ends: 43 [2021-08-30 22:41:44,686 INFO L226 Difference]: Without dead ends: 42 [2021-08-30 22:41:44,687 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 40.31ms TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-08-30 22:41:44,687 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.90ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.55ms IncrementalHoareTripleChecker+Time [2021-08-30 22:41:44,687 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 15 Invalid, 234 Unknown, 0 Unchecked, 0.90ms Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 99.55ms Time] [2021-08-30 22:41:44,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-30 22:41:44,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-08-30 22:41:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-08-30 22:41:44,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2021-08-30 22:41:44,691 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 27 [2021-08-30 22:41:44,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:41:44,692 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2021-08-30 22:41:44,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 22:41:44,692 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2021-08-30 22:41:44,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 22:41:44,693 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:41:44,693 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:41:44,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 22:41:44,693 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:41:44,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:41:44,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1567415017, now seen corresponding path program 1 times [2021-08-30 22:41:44,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:41:44,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336531702] [2021-08-30 22:41:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:44,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:41:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 22:41:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:44,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 22:41:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 22:41:44,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:41:44,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336531702] [2021-08-30 22:41:44,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336531702] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:41:44,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226071856] [2021-08-30 22:41:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:44,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:41:44,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:41:44,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:41:44,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 22:41:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:44,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 22:41:44,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:41:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-30 22:41:44,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 22:41:44,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226071856] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:41:44,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 22:41:44,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-08-30 22:41:44,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310575181] [2021-08-30 22:41:44,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 22:41:44,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:41:44,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 22:41:44,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2021-08-30 22:41:44,990 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 22:41:45,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:41:45,097 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2021-08-30 22:41:45,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 22:41:45,098 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-08-30 22:41:45,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:41:45,098 INFO L225 Difference]: With dead ends: 52 [2021-08-30 22:41:45,099 INFO L226 Difference]: Without dead ends: 43 [2021-08-30 22:41:45,100 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 148.05ms TimeCoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-08-30 22:41:45,100 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.89ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.56ms IncrementalHoareTripleChecker+Time [2021-08-30 22:41:45,100 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 46 Invalid, 179 Unknown, 0 Unchecked, 0.89ms Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 70.56ms Time] [2021-08-30 22:41:45,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-30 22:41:45,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-08-30 22:41:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.09375) internal successors, (35), 33 states have internal predecessors, (35), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2021-08-30 22:41:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2021-08-30 22:41:45,105 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 27 [2021-08-30 22:41:45,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:41:45,105 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2021-08-30 22:41:45,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 22:41:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2021-08-30 22:41:45,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-30 22:41:45,106 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:41:45,106 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:41:45,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 22:41:45,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-08-30 22:41:45,321 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:41:45,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:41:45,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1739599136, now seen corresponding path program 1 times [2021-08-30 22:41:45,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:41:45,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631780842] [2021-08-30 22:41:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:45,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:41:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 22:41:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:45,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 22:41:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-30 22:41:45,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:41:45,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631780842] [2021-08-30 22:41:45,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631780842] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:41:45,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388412928] [2021-08-30 22:41:45,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:45,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:41:45,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:41:45,457 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:41:45,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 22:41:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:45,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-30 22:41:45,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:41:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-30 22:41:45,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 22:41:45,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388412928] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:41:45,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 22:41:45,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 21 [2021-08-30 22:41:45,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798500908] [2021-08-30 22:41:45,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 22:41:45,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:41:45,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 22:41:45,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-08-30 22:41:45,739 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 12 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 22:41:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:41:45,892 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2021-08-30 22:41:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 22:41:45,893 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-08-30 22:41:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:41:45,893 INFO L225 Difference]: With dead ends: 52 [2021-08-30 22:41:45,893 INFO L226 Difference]: Without dead ends: 37 [2021-08-30 22:41:45,894 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 219.55ms TimeCoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2021-08-30 22:41:45,894 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.29ms IncrementalHoareTripleChecker+Time [2021-08-30 22:41:45,894 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 66 Invalid, 290 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 109.29ms Time] [2021-08-30 22:41:45,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-30 22:41:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-30 22:41:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-08-30 22:41:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-08-30 22:41:45,897 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 33 [2021-08-30 22:41:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:41:45,898 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-08-30 22:41:45,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 22:41:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-08-30 22:41:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-30 22:41:45,898 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:41:45,899 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:41:45,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 22:41:46,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:41:46,109 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-30 22:41:46,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:41:46,109 INFO L82 PathProgramCache]: Analyzing trace with hash -378656390, now seen corresponding path program 1 times [2021-08-30 22:41:46,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:41:46,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422864000] [2021-08-30 22:41:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:46,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:41:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:46,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 22:41:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 22:41:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:46,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 22:41:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-30 22:41:46,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:41:46,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422864000] [2021-08-30 22:41:46,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422864000] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:41:46,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931965254] [2021-08-30 22:41:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:41:46,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:41:46,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:41:46,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:41:46,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-30 22:41:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:41:46,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 22:41:46,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:41:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-30 22:41:46,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 22:41:46,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931965254] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:41:46,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 22:41:46,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 21 [2021-08-30 22:41:46,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275483192] [2021-08-30 22:41:46,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 22:41:46,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:41:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 22:41:46,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2021-08-30 22:41:46,499 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 22:41:46,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:41:46,601 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-08-30 22:41:46,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 22:41:46,602 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-08-30 22:41:46,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:41:46,602 INFO L225 Difference]: With dead ends: 37 [2021-08-30 22:41:46,602 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 22:41:46,602 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 196.82ms TimeCoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2021-08-30 22:41:46,603 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.83ms IncrementalHoareTripleChecker+Time [2021-08-30 22:41:46,603 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 51 Invalid, 181 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 61.83ms Time] [2021-08-30 22:41:46,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 22:41:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 22:41:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-30 22:41:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 22:41:46,604 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2021-08-30 22:41:46,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:41:46,604 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 22:41:46,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 22:41:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 22:41:46,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 22:41:46,606 INFO L764 garLoopResultBuilder]: Registering result SAFE for location dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2021-08-30 22:41:46,606 INFO L764 garLoopResultBuilder]: Registering result SAFE for location dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2021-08-30 22:41:46,606 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2021-08-30 22:41:46,606 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2021-08-30 22:41:46,606 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2021-08-30 22:41:46,606 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2021-08-30 22:41:46,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-30 22:41:46,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:41:46,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-30 22:41:46,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:41:46,939 INFO L858 garLoopResultBuilder]: For program point L33(lines 33 35) no Hoare annotation was computed. [2021-08-30 22:41:46,939 INFO L858 garLoopResultBuilder]: For program point dividesFINAL(lines 32 40) no Hoare annotation was computed. [2021-08-30 22:41:46,939 INFO L858 garLoopResultBuilder]: For program point dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2021-08-30 22:41:46,939 INFO L858 garLoopResultBuilder]: For program point dividesEXIT(lines 32 40) no Hoare annotation was computed. [2021-08-30 22:41:46,939 INFO L858 garLoopResultBuilder]: For program point dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2021-08-30 22:41:46,939 INFO L858 garLoopResultBuilder]: For program point L39(line 39) no Hoare annotation was computed. [2021-08-30 22:41:46,940 INFO L858 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2021-08-30 22:41:46,940 INFO L854 garLoopResultBuilder]: At program point L39-2(line 39) the Hoare annotation is: (let ((.cse0 (not (< 0 |divides_#in~n|)))) (and (or (not (< |divides_#in~m| 2147483647)) (< divides_~m 2147483647) .cse0) (or (not (<= |divides_#in~m| 2147483647)) .cse0 (and (<= divides_~m 2147483647) (< 0 divides_~n) (<= divides_~n divides_~m))))) [2021-08-30 22:41:46,940 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2021-08-30 22:41:46,940 INFO L858 garLoopResultBuilder]: For program point L39-3(line 39) no Hoare annotation was computed. [2021-08-30 22:41:46,940 INFO L861 garLoopResultBuilder]: At program point dividesENTRY(lines 32 40) the Hoare annotation is: true [2021-08-30 22:41:46,940 INFO L858 garLoopResultBuilder]: For program point gcdEXIT(lines 17 29) no Hoare annotation was computed. [2021-08-30 22:41:46,940 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 27) no Hoare annotation was computed. [2021-08-30 22:41:46,941 INFO L858 garLoopResultBuilder]: For program point gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2021-08-30 22:41:46,941 INFO L858 garLoopResultBuilder]: For program point gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-08-30 22:41:46,941 INFO L858 garLoopResultBuilder]: For program point gcdFINAL(lines 17 29) no Hoare annotation was computed. [2021-08-30 22:41:46,941 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-08-30 22:41:46,941 INFO L858 garLoopResultBuilder]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-08-30 22:41:46,941 INFO L858 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-08-30 22:41:46,941 INFO L854 garLoopResultBuilder]: At program point L28-2(line 28) the Hoare annotation is: (or (not (<= |gcd_#in~y2| 2147483647)) (and (< 0 gcd_~y1) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (= gcd_~y1 |gcd_#in~y1|) (<= gcd_~y2 2147483647)) (not (<= |gcd_#in~y1| 2147483647))) [2021-08-30 22:41:46,941 INFO L858 garLoopResultBuilder]: For program point gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-08-30 22:41:46,942 INFO L858 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-08-30 22:41:46,942 INFO L858 garLoopResultBuilder]: For program point L28-3(line 28) no Hoare annotation was computed. [2021-08-30 22:41:46,942 INFO L854 garLoopResultBuilder]: At program point L26-2(line 26) the Hoare annotation is: (or (not (<= |gcd_#in~y2| 2147483647)) (and (< 0 gcd_~y1) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (= gcd_~y1 |gcd_#in~y1|) (<= gcd_~y2 2147483647)) (not (<= |gcd_#in~y1| 2147483647))) [2021-08-30 22:41:46,942 INFO L861 garLoopResultBuilder]: At program point gcdENTRY(lines 17 29) the Hoare annotation is: true [2021-08-30 22:41:46,942 INFO L858 garLoopResultBuilder]: For program point L26-3(line 26) no Hoare annotation was computed. [2021-08-30 22:41:46,942 INFO L858 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-08-30 22:41:46,942 INFO L858 garLoopResultBuilder]: For program point gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2021-08-30 22:41:46,942 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 21) no Hoare annotation was computed. [2021-08-30 22:41:46,942 INFO L858 garLoopResultBuilder]: For program point L18-2(lines 17 29) no Hoare annotation was computed. [2021-08-30 22:41:46,943 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-30 22:41:46,943 INFO L858 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2021-08-30 22:41:46,943 INFO L854 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2021-08-30 22:41:46,943 INFO L858 garLoopResultBuilder]: For program point L52-1(line 52) no Hoare annotation was computed. [2021-08-30 22:41:46,943 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2021-08-30 22:41:46,943 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 46) no Hoare annotation was computed. [2021-08-30 22:41:46,943 INFO L861 garLoopResultBuilder]: At program point L42(lines 42 59) the Hoare annotation is: true [2021-08-30 22:41:46,943 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-30 22:41:46,943 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-30 22:41:46,944 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-30 22:41:46,944 INFO L854 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647) (< 0 ULTIMATE.start_main_~z~0)) [2021-08-30 22:41:46,944 INFO L858 garLoopResultBuilder]: For program point L53-1(line 53) no Hoare annotation was computed. [2021-08-30 22:41:46,944 INFO L858 garLoopResultBuilder]: For program point L51(lines 51 58) no Hoare annotation was computed. [2021-08-30 22:41:46,944 INFO L858 garLoopResultBuilder]: For program point L53-2(lines 53 57) no Hoare annotation was computed. [2021-08-30 22:41:46,947 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 22:41:46,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:41:46 BoogieIcfgContainer [2021-08-30 22:41:46,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 22:41:46,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 22:41:46,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 22:41:46,952 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 22:41:46,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:41:42" (3/4) ... [2021-08-30 22:41:46,954 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 22:41:46,958 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure divides [2021-08-30 22:41:46,958 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2021-08-30 22:41:46,961 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-08-30 22:41:46,961 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-08-30 22:41:46,961 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 22:41:46,961 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 22:41:46,980 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 22:41:46,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 22:41:46,981 INFO L158 Benchmark]: Toolchain (without parser) took 4874.67ms. Allocated memory was 69.2MB in the beginning and 102.8MB in the end (delta: 33.6MB). Free memory was 51.9MB in the beginning and 67.1MB in the end (delta: -15.2MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2021-08-30 22:41:46,981 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:41:46,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 123.26ms. Allocated memory is still 69.2MB. Free memory was 51.8MB in the beginning and 41.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 22:41:46,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.92ms. Allocated memory is still 69.2MB. Free memory was 41.7MB in the beginning and 53.0MB in the end (delta: -11.3MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2021-08-30 22:41:46,982 INFO L158 Benchmark]: Boogie Preprocessor took 30.30ms. Allocated memory is still 69.2MB. Free memory was 53.0MB in the beginning and 52.2MB in the end (delta: 841.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:41:46,982 INFO L158 Benchmark]: RCFGBuilder took 247.45ms. Allocated memory is still 69.2MB. Free memory was 51.9MB in the beginning and 42.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 22:41:46,982 INFO L158 Benchmark]: TraceAbstraction took 4386.04ms. Allocated memory was 69.2MB in the beginning and 102.8MB in the end (delta: 33.6MB). Free memory was 42.1MB in the beginning and 70.3MB in the end (delta: -28.2MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2021-08-30 22:41:46,982 INFO L158 Benchmark]: Witness Printer took 28.41ms. Allocated memory is still 102.8MB. Free memory was 70.3MB in the beginning and 67.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 22:41:46,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 123.26ms. Allocated memory is still 69.2MB. Free memory was 51.8MB in the beginning and 41.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.92ms. Allocated memory is still 69.2MB. Free memory was 41.7MB in the beginning and 53.0MB in the end (delta: -11.3MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.30ms. Allocated memory is still 69.2MB. Free memory was 53.0MB in the beginning and 52.2MB in the end (delta: 841.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 247.45ms. Allocated memory is still 69.2MB. Free memory was 51.9MB in the beginning and 42.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4386.04ms. Allocated memory was 69.2MB in the beginning and 102.8MB in the end (delta: 33.6MB). Free memory was 42.1MB in the beginning and 70.3MB in the end (delta: -28.2MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. * Witness Printer took 28.41ms. Allocated memory is still 102.8MB. Free memory was 70.3MB in the beginning and 67.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 4333.85ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 14.34ms, AutomataDifference: 1153.56ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 131.47ms, InitialAbstractionConstructionTime: 11.87ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 241 SdHoareTripleChecker+Valid, 763.90ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 209 mSDsluCounter, 308 SdHoareTripleChecker+Invalid, 612.14ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 713 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1660 IncrementalHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 64 mSDtfsCounter, 1660 mSolverCounterSat, 13.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 902.96ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 69.81ms AutomataMinimizationTime, 9 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 8 LocationsWithAnnotation, 42 PreInvPairs, 52 NumberOfFragments, 100 HoareAnnotationTreeSize, 42 FomulaSimplifications, 91 FormulaSimplificationTreeSizeReduction, 42.26ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 82.83ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 38.68ms SsaConstructionTime, 149.14ms SatisfiabilityAnalysisTime, 1558.72ms InterpolantComputationTime, 324 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 311 ConstructedInterpolants, 0 QuantifiedInterpolants, 1191 SizeOfPredicates, 16 NumberOfNonLiveVariables, 444 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 57/73 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-30 22:41:47,008 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...