./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer --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 9918b49e0d76e4ce36b6a6760021b33460a8ae9b ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 23:58:34,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:58:34,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:58:34,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:58:34,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:58:34,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:58:34,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:58:34,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:58:34,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:58:34,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:58:34,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:58:34,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:58:34,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:58:34,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:58:34,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:58:34,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:58:34,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:58:34,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:58:34,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:58:34,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:58:34,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:58:34,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:58:34,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:58:34,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:58:34,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:58:34,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:58:34,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:58:34,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:58:34,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:58:34,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:58:34,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:58:34,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:58:34,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:58:34,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:58:34,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:58:34,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:58:34,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:58:34,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:58:34,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:58:34,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:58:34,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:58:34,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-19 23:58:34,892 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:58:34,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:58:34,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:58:34,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:58:34,894 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:58:34,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:58:34,894 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:58:34,894 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 23:58:34,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:58:34,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:58:34,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:58:34,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 23:58:34,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:58:34,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 23:58:34,896 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-19 23:58:34,896 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:58:34,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:58:34,896 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:58:34,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 23:58:34,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:58:34,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:58:34,897 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:58:34,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 23:58:34,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:58:34,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:58:34,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:58:34,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 23:58:34,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:58:34,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 23:58:34,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 23:58:34,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer 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 -> 9918b49e0d76e4ce36b6a6760021b33460a8ae9b [2019-11-19 23:58:35,052 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:58:35,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:58:35,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:58:35,067 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:58:35,067 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:58:35,068 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/../../sv-benchmarks/c/bitvector/gcd_4.c [2019-11-19 23:58:35,119 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/data/fd593dd56/348b2f80091b4450834c038c8e845331/FLAG5099d8493 [2019-11-19 23:58:35,500 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:58:35,501 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/sv-benchmarks/c/bitvector/gcd_4.c [2019-11-19 23:58:35,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/data/fd593dd56/348b2f80091b4450834c038c8e845331/FLAG5099d8493 [2019-11-19 23:58:35,864 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/data/fd593dd56/348b2f80091b4450834c038c8e845331 [2019-11-19 23:58:35,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:58:35,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:58:35,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:58:35,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:58:35,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:58:35,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:58:35" (1/1) ... [2019-11-19 23:58:35,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8f14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:35, skipping insertion in model container [2019-11-19 23:58:35,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:58:35" (1/1) ... [2019-11-19 23:58:35,885 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:58:35,904 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:58:36,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:58:36,091 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:58:36,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:58:36,230 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:58:36,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:36 WrapperNode [2019-11-19 23:58:36,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:58:36,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:58:36,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:58:36,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:58:36,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:36" (1/1) ... [2019-11-19 23:58:36,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:36" (1/1) ... [2019-11-19 23:58:36,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:58:36,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:58:36,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:58:36,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:58:36,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:36" (1/1) ... [2019-11-19 23:58:36,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:36" (1/1) ... [2019-11-19 23:58:36,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:36" (1/1) ... [2019-11-19 23:58:36,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:36" (1/1) ... [2019-11-19 23:58:36,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:36" (1/1) ... [2019-11-19 23:58:36,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:36" (1/1) ... [2019-11-19 23:58:36,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:36" (1/1) ... [2019-11-19 23:58:36,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:58:36,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:58:36,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:58:36,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:58:36,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:58:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:58:36,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:58:36,631 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:58:36,632 INFO L285 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-19 23:58:36,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:58:36 BoogieIcfgContainer [2019-11-19 23:58:36,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:58:36,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 23:58:36,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 23:58:36,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 23:58:36,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:58:35" (1/3) ... [2019-11-19 23:58:36,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f416919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:58:36, skipping insertion in model container [2019-11-19 23:58:36,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:58:36" (2/3) ... [2019-11-19 23:58:36,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f416919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:58:36, skipping insertion in model container [2019-11-19 23:58:36,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:58:36" (3/3) ... [2019-11-19 23:58:36,649 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2019-11-19 23:58:36,659 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 23:58:36,665 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-19 23:58:36,689 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-19 23:58:36,722 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 23:58:36,722 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 23:58:36,722 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 23:58:36,722 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:58:36,722 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:58:36,722 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 23:58:36,723 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:58:36,723 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 23:58:36,746 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-19 23:58:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-19 23:58:36,751 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:58:36,752 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-19 23:58:36,752 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:58:36,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:58:36,758 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-19 23:58:36,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:58:36,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047457132] [2019-11-19 23:58:36,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:58:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:36,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047457132] [2019-11-19 23:58:36,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:58:36,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 23:58:36,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930559594] [2019-11-19 23:58:36,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:58:36,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:58:36,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:58:36,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:58:36,898 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2019-11-19 23:58:37,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:58:37,010 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2019-11-19 23:58:37,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:58:37,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-19 23:58:37,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:58:37,021 INFO L225 Difference]: With dead ends: 90 [2019-11-19 23:58:37,022 INFO L226 Difference]: Without dead ends: 28 [2019-11-19 23:58:37,028 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:58:37,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-19 23:58:37,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2019-11-19 23:58:37,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-19 23:58:37,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-19 23:58:37,055 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 3 [2019-11-19 23:58:37,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:58:37,055 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-19 23:58:37,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:58:37,055 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-19 23:58:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-19 23:58:37,056 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:58:37,056 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-19 23:58:37,056 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:58:37,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:58:37,057 INFO L82 PathProgramCache]: Analyzing trace with hash 963371, now seen corresponding path program 1 times [2019-11-19 23:58:37,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:58:37,057 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444055344] [2019-11-19 23:58:37,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:58:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:37,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444055344] [2019-11-19 23:58:37,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:58:37,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 23:58:37,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439455092] [2019-11-19 23:58:37,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:58:37,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:58:37,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:58:37,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:58:37,085 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2019-11-19 23:58:37,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:58:37,148 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-11-19 23:58:37,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:58:37,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-19 23:58:37,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:58:37,150 INFO L225 Difference]: With dead ends: 39 [2019-11-19 23:58:37,150 INFO L226 Difference]: Without dead ends: 24 [2019-11-19 23:58:37,151 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:58:37,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-19 23:58:37,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2019-11-19 23:58:37,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-19 23:58:37,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-19 23:58:37,154 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2019-11-19 23:58:37,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:58:37,155 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-19 23:58:37,155 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:58:37,155 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-19 23:58:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 23:58:37,155 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:58:37,155 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:58:37,156 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:58:37,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:58:37,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1359081932, now seen corresponding path program 1 times [2019-11-19 23:58:37,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:58:37,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716993682] [2019-11-19 23:58:37,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:58:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:37,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716993682] [2019-11-19 23:58:37,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:58:37,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-19 23:58:37,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500547658] [2019-11-19 23:58:37,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:58:37,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:58:37,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:58:37,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:58:37,210 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2019-11-19 23:58:37,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:58:37,253 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-11-19 23:58:37,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:58:37,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-19 23:58:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:58:37,254 INFO L225 Difference]: With dead ends: 28 [2019-11-19 23:58:37,254 INFO L226 Difference]: Without dead ends: 18 [2019-11-19 23:58:37,255 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:58:37,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-19 23:58:37,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-19 23:58:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-19 23:58:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-19 23:58:37,260 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 7 [2019-11-19 23:58:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:58:37,260 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-19 23:58:37,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:58:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-19 23:58:37,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 23:58:37,261 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:58:37,261 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:58:37,261 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:58:37,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:58:37,262 INFO L82 PathProgramCache]: Analyzing trace with hash -934966417, now seen corresponding path program 1 times [2019-11-19 23:58:37,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:58:37,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108035454] [2019-11-19 23:58:37,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:58:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:37,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108035454] [2019-11-19 23:58:37,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693305043] [2019-11-19 23:58:37,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:37,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 23:58:37,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:58:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:37,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-19 23:58:37,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2019-11-19 23:58:37,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341282967] [2019-11-19 23:58:37,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 23:58:37,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:58:37,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:58:37,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:58:37,427 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2019-11-19 23:58:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:58:37,512 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2019-11-19 23:58:37,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 23:58:37,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-19 23:58:37,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:58:37,514 INFO L225 Difference]: With dead ends: 28 [2019-11-19 23:58:37,514 INFO L226 Difference]: Without dead ends: 26 [2019-11-19 23:58:37,514 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:58:37,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-19 23:58:37,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-19 23:58:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-19 23:58:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-19 23:58:37,520 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 11 [2019-11-19 23:58:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:58:37,521 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-19 23:58:37,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 23:58:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-19 23:58:37,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 23:58:37,522 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:58:37,522 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:58:37,723 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:37,723 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:58:37,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:58:37,723 INFO L82 PathProgramCache]: Analyzing trace with hash -934966225, now seen corresponding path program 1 times [2019-11-19 23:58:37,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:58:37,724 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76829457] [2019-11-19 23:58:37,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:58:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:37,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76829457] [2019-11-19 23:58:37,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050959759] [2019-11-19 23:58:37,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:37,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 23:58:37,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:58:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:37,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:58:37,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2019-11-19 23:58:37,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121534409] [2019-11-19 23:58:37,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 23:58:37,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:58:37,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 23:58:37,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:58:37,862 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2019-11-19 23:58:37,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:58:37,914 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2019-11-19 23:58:37,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 23:58:37,917 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-19 23:58:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:58:37,917 INFO L225 Difference]: With dead ends: 40 [2019-11-19 23:58:37,918 INFO L226 Difference]: Without dead ends: 28 [2019-11-19 23:58:37,918 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:58:37,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-19 23:58:37,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-19 23:58:37,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-19 23:58:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-19 23:58:37,923 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 11 [2019-11-19 23:58:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:58:37,924 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-19 23:58:37,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 23:58:37,924 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-19 23:58:37,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 23:58:37,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:58:37,927 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-19 23:58:38,129 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:38,130 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:58:38,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:58:38,130 INFO L82 PathProgramCache]: Analyzing trace with hash -892996630, now seen corresponding path program 2 times [2019-11-19 23:58:38,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:58:38,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847326449] [2019-11-19 23:58:38,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:58:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:38,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847326449] [2019-11-19 23:58:38,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32394815] [2019-11-19 23:58:38,210 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:38,238 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 23:58:38,238 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 23:58:38,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 23:58:38,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:58:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:38,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:58:38,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2019-11-19 23:58:38,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702914397] [2019-11-19 23:58:38,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 23:58:38,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:58:38,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 23:58:38,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:58:38,304 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2019-11-19 23:58:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:58:38,384 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2019-11-19 23:58:38,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 23:58:38,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-19 23:58:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:58:38,386 INFO L225 Difference]: With dead ends: 44 [2019-11-19 23:58:38,386 INFO L226 Difference]: Without dead ends: 32 [2019-11-19 23:58:38,386 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:58:38,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-19 23:58:38,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-19 23:58:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-19 23:58:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-11-19 23:58:38,392 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 15 [2019-11-19 23:58:38,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:58:38,393 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-11-19 23:58:38,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 23:58:38,393 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-11-19 23:58:38,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-19 23:58:38,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:58:38,394 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-19 23:58:38,603 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:38,604 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:58:38,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:58:38,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1124468261, now seen corresponding path program 3 times [2019-11-19 23:58:38,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:58:38,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169808675] [2019-11-19 23:58:38,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:58:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:38,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169808675] [2019-11-19 23:58:38,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383606386] [2019-11-19 23:58:38,674 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:38,708 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-19 23:58:38,708 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 23:58:38,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 23:58:38,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:58:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-19 23:58:38,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-19 23:58:38,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2019-11-19 23:58:38,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204717996] [2019-11-19 23:58:38,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 23:58:38,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:58:38,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 23:58:38,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2019-11-19 23:58:38,756 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2019-11-19 23:58:38,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:58:38,797 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-19 23:58:38,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 23:58:38,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-19 23:58:38,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:58:38,798 INFO L225 Difference]: With dead ends: 32 [2019-11-19 23:58:38,799 INFO L226 Difference]: Without dead ends: 30 [2019-11-19 23:58:38,799 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-11-19 23:58:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-19 23:58:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-11-19 23:58:38,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-19 23:58:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-19 23:58:38,804 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 19 [2019-11-19 23:58:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:58:38,804 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-19 23:58:38,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 23:58:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-19 23:58:38,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-19 23:58:38,805 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:58:38,805 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:58:39,005 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:39,006 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:58:39,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:58:39,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1497309926, now seen corresponding path program 1 times [2019-11-19 23:58:39,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:58:39,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762473364] [2019-11-19 23:58:39,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:58:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:39,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762473364] [2019-11-19 23:58:39,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146456518] [2019-11-19 23:58:39,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:39,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-19 23:58:39,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:58:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:39,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:58:39,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2019-11-19 23:58:39,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886240822] [2019-11-19 23:58:39,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-19 23:58:39,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:58:39,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-19 23:58:39,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-19 23:58:39,221 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 13 states. [2019-11-19 23:58:39,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:58:39,366 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2019-11-19 23:58:39,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 23:58:39,371 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2019-11-19 23:58:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:58:39,372 INFO L225 Difference]: With dead ends: 49 [2019-11-19 23:58:39,372 INFO L226 Difference]: Without dead ends: 35 [2019-11-19 23:58:39,373 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-19 23:58:39,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-19 23:58:39,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-11-19 23:58:39,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-19 23:58:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-11-19 23:58:39,382 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2019-11-19 23:58:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:58:39,383 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-11-19 23:58:39,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-19 23:58:39,383 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-11-19 23:58:39,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-19 23:58:39,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:58:39,385 INFO L410 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-19 23:58:39,587 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:39,588 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:58:39,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:58:39,588 INFO L82 PathProgramCache]: Analyzing trace with hash -906966518, now seen corresponding path program 2 times [2019-11-19 23:58:39,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:58:39,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725855995] [2019-11-19 23:58:39,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:58:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:39,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725855995] [2019-11-19 23:58:39,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933211382] [2019-11-19 23:58:39,720 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:39,752 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 23:58:39,752 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 23:58:39,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-19 23:58:39,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:58:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:39,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:58:39,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2019-11-19 23:58:39,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016378497] [2019-11-19 23:58:39,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-19 23:58:39,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:58:39,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-19 23:58:39,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2019-11-19 23:58:39,930 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 17 states. [2019-11-19 23:58:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:58:40,619 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2019-11-19 23:58:40,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-19 23:58:40,619 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2019-11-19 23:58:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:58:40,622 INFO L225 Difference]: With dead ends: 61 [2019-11-19 23:58:40,622 INFO L226 Difference]: Without dead ends: 60 [2019-11-19 23:58:40,622 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2019-11-19 23:58:40,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-19 23:58:40,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2019-11-19 23:58:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-19 23:58:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2019-11-19 23:58:40,629 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 31 [2019-11-19 23:58:40,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:58:40,629 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2019-11-19 23:58:40,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-19 23:58:40,630 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2019-11-19 23:58:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-19 23:58:40,631 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:58:40,631 INFO L410 BasicCegarLoop]: trace histogram [9, 6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1] [2019-11-19 23:58:40,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:40,834 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:58:40,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:58:40,834 INFO L82 PathProgramCache]: Analyzing trace with hash -764331526, now seen corresponding path program 3 times [2019-11-19 23:58:40,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:58:40,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302558555] [2019-11-19 23:58:40,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:58:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:58:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:58:41,017 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302558555] [2019-11-19 23:58:41,017 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342936640] [2019-11-19 23:58:41,017 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:41,053 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-19 23:58:41,053 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 23:58:41,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 23:58:41,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:58:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-19 23:58:41,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-19 23:58:41,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 15 [2019-11-19 23:58:41,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966589614] [2019-11-19 23:58:41,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 23:58:41,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:58:41,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 23:58:41,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-11-19 23:58:41,138 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 6 states. [2019-11-19 23:58:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:58:41,178 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2019-11-19 23:58:41,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 23:58:41,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-11-19 23:58:41,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:58:41,180 INFO L225 Difference]: With dead ends: 47 [2019-11-19 23:58:41,180 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 23:58:41,180 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2019-11-19 23:58:41,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 23:58:41,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 23:58:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 23:58:41,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 23:58:41,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-11-19 23:58:41,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:58:41,181 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:58:41,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 23:58:41,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 23:58:41,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 23:58:41,382 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:58:41,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 23:58:41,417 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2019-11-19 23:58:41,417 INFO L444 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-19 23:58:41,417 INFO L444 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-19 23:58:41,417 INFO L444 ceAbstractionStarter]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2019-11-19 23:58:41,417 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-19 23:58:41,417 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 12) no Hoare annotation was computed. [2019-11-19 23:58:41,417 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 23:58:41,417 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-19 23:58:41,417 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 23:58:41,418 INFO L444 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2019-11-19 23:58:41,418 INFO L440 ceAbstractionStarter]: At program point L20-2(lines 19 25) the Hoare annotation is: (and (<= ULTIMATE.start_gcd_test_~a 2147483647) (<= 0 ULTIMATE.start_gcd_test_~b) (<= 1 ULTIMATE.start_gcd_test_~a) (<= ULTIMATE.start_gcd_test_~b 18)) [2019-11-19 23:58:41,418 INFO L447 ceAbstractionStarter]: At program point L45(lines 30 46) the Hoare annotation is: true [2019-11-19 23:58:41,418 INFO L444 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2019-11-19 23:58:41,418 INFO L444 ceAbstractionStarter]: For program point L12-1(line 12) no Hoare annotation was computed. [2019-11-19 23:58:41,418 INFO L444 ceAbstractionStarter]: For program point L12-2(line 12) no Hoare annotation was computed. [2019-11-19 23:58:41,418 INFO L444 ceAbstractionStarter]: For program point L12-4(lines 11 27) no Hoare annotation was computed. [2019-11-19 23:58:41,418 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 12) no Hoare annotation was computed. [2019-11-19 23:58:41,418 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 23:58:41,419 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-19 23:58:41,419 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-19 23:58:41,419 INFO L444 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-11-19 23:58:41,419 INFO L444 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-19 23:58:41,419 INFO L444 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-19 23:58:41,419 INFO L444 ceAbstractionStarter]: For program point L13-3(lines 11 27) no Hoare annotation was computed. [2019-11-19 23:58:41,419 INFO L444 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-19 23:58:41,419 INFO L447 ceAbstractionStarter]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2019-11-19 23:58:41,419 INFO L444 ceAbstractionStarter]: For program point L5-3(lines 5 7) no Hoare annotation was computed. [2019-11-19 23:58:41,419 INFO L447 ceAbstractionStarter]: At program point L5-5(lines 4 9) the Hoare annotation is: true [2019-11-19 23:58:41,419 INFO L444 ceAbstractionStarter]: For program point L5-6(lines 5 7) no Hoare annotation was computed. [2019-11-19 23:58:41,420 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2019-11-19 23:58:41,420 INFO L447 ceAbstractionStarter]: At program point L5-8(lines 4 9) the Hoare annotation is: true [2019-11-19 23:58:41,420 INFO L447 ceAbstractionStarter]: At program point L26(lines 10 27) the Hoare annotation is: true [2019-11-19 23:58:41,420 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-19 23:58:41,420 INFO L444 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-19 23:58:41,420 INFO L444 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-11-19 23:58:41,420 INFO L444 ceAbstractionStarter]: For program point L6-2(line 6) no Hoare annotation was computed. [2019-11-19 23:58:41,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 11:58:41 BoogieIcfgContainer [2019-11-19 23:58:41,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 23:58:41,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:58:41,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:58:41,435 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:58:41,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:58:36" (3/4) ... [2019-11-19 23:58:41,438 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 23:58:41,448 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-19 23:58:41,449 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-19 23:58:41,514 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cba383e5-238e-49cd-b265-7ba0fd871d86/bin/uautomizer/witness.graphml [2019-11-19 23:58:41,515 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:58:41,517 INFO L168 Benchmark]: Toolchain (without parser) took 5648.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -102.5 MB). Peak memory consumption was 53.8 MB. Max. memory is 11.5 GB. [2019-11-19 23:58:41,517 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:58:41,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -207.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-19 23:58:41,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:58:41,518 INFO L168 Benchmark]: Boogie Preprocessor took 23.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-19 23:58:41,519 INFO L168 Benchmark]: RCFGBuilder took 340.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-19 23:58:41,519 INFO L168 Benchmark]: TraceAbstraction took 4799.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.3 MB). Peak memory consumption was 78.3 MB. Max. memory is 11.5 GB. [2019-11-19 23:58:41,520 INFO L168 Benchmark]: Witness Printer took 80.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-19 23:58:41,522 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 362.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -207.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 340.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4799.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.3 MB). Peak memory consumption was 78.3 MB. Max. memory is 11.5 GB. * Witness Printer took 80.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((a <= 2147483647 && 0 <= b) && 1 <= a) && b <= 18 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 8 error locations. Result: SAFE, OverallTime: 4.7s, OverallIterations: 10, TraceHistogramMax: 9, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 188 SDslu, 14 SDs, 0 SdLazy, 642 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 38 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 26 NumberOfFragments, 18 HoareAnnotationTreeSize, 6 FomulaSimplifications, 278 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 312 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 295 ConstructedInterpolants, 3 QuantifiedInterpolants, 52695 SizeOfPredicates, 25 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 176/446 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...