./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/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 64bit --witnessprinter.graph.data.programhash 0564e568992a96ba006237c1af458e049de52506 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:45:45,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:45:45,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:45:45,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:45:45,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:45:45,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:45:45,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:45:45,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:45:45,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:45:45,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:45:45,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:45:45,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:45:45,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:45:45,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:45:45,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:45:45,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:45:45,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:45:45,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:45:45,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:45:45,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:45:45,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:45:45,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:45:45,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:45:45,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:45:45,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:45:45,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:45:45,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:45:45,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:45:45,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:45:45,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:45:45,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:45:45,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:45:45,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:45:45,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:45:45,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:45:45,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:45:45,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:45:45,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:45:45,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:45:45,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:45:45,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:45:45,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-12-07 10:45:45,887 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:45:45,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:45:45,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:45:45,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:45:45,889 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:45:45,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:45:45,889 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 10:45:45,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:45:45,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:45:45,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:45:45,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:45:45,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:45:45,890 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 10:45:45,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:45:45,891 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:45:45,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:45:45,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:45:45,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:45:45,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:45:45,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:45:45,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:45:45,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:45:45,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:45:45,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:45:45,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:45:45,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:45:45,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:45:45,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:45:45,893 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_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0564e568992a96ba006237c1af458e049de52506 [2019-12-07 10:45:45,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:45:46,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:45:46,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:45:46,014 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:45:46,014 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:45:46,015 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2019-12-07 10:45:46,051 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/bin/uautomizer/data/c8f539fa8/14b2fcf6fa81493b860afba6c9b3e317/FLAGbc39c7081 [2019-12-07 10:45:46,389 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:45:46,390 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2019-12-07 10:45:46,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/bin/uautomizer/data/c8f539fa8/14b2fcf6fa81493b860afba6c9b3e317/FLAGbc39c7081 [2019-12-07 10:45:46,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/bin/uautomizer/data/c8f539fa8/14b2fcf6fa81493b860afba6c9b3e317 [2019-12-07 10:45:46,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:45:46,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:45:46,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:45:46,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:45:46,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:45:46,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:45:46" (1/1) ... [2019-12-07 10:45:46,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d2d37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46, skipping insertion in model container [2019-12-07 10:45:46,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:45:46" (1/1) ... [2019-12-07 10:45:46,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:45:46,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:45:46,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:45:46,910 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:45:46,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:45:46,959 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:45:46,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46 WrapperNode [2019-12-07 10:45:46,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:45:46,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:45:46,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:45:46,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:45:46,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46" (1/1) ... [2019-12-07 10:45:46,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46" (1/1) ... [2019-12-07 10:45:46,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:45:46,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:45:46,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:45:46,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:45:46,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46" (1/1) ... [2019-12-07 10:45:46,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46" (1/1) ... [2019-12-07 10:45:46,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46" (1/1) ... [2019-12-07 10:45:46,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46" (1/1) ... [2019-12-07 10:45:46,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46" (1/1) ... [2019-12-07 10:45:46,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46" (1/1) ... [2019-12-07 10:45:46,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46" (1/1) ... [2019-12-07 10:45:46,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:45:46,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:45:46,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:45:46,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:45:46,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/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 [2019-12-07 10:45:47,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:45:47,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:45:47,119 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:45:47,119 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 10:45:47,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:45:47 BoogieIcfgContainer [2019-12-07 10:45:47,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:45:47,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:45:47,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:45:47,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:45:47,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:45:46" (1/3) ... [2019-12-07 10:45:47,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ab64f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:45:47, skipping insertion in model container [2019-12-07 10:45:47,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:45:46" (2/3) ... [2019-12-07 10:45:47,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ab64f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:45:47, skipping insertion in model container [2019-12-07 10:45:47,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:45:47" (3/3) ... [2019-12-07 10:45:47,125 INFO L109 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2019-12-07 10:45:47,131 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:45:47,135 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 10:45:47,142 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 10:45:47,156 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:45:47,157 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:45:47,157 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:45:47,157 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:45:47,157 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:45:47,157 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:45:47,157 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:45:47,157 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:45:47,166 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-12-07 10:45:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 10:45:47,169 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:45:47,170 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 10:45:47,170 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:45:47,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:45:47,174 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-12-07 10:45:47,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:45:47,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435906759] [2019-12-07 10:45:47,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:45:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:45:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:47,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435906759] [2019-12-07 10:45:47,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:45:47,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 10:45:47,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516110911] [2019-12-07 10:45:47,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:45:47,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:45:47,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:45:47,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:45:47,283 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-12-07 10:45:47,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:45:47,317 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-12-07 10:45:47,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:45:47,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 10:45:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:45:47,324 INFO L225 Difference]: With dead ends: 26 [2019-12-07 10:45:47,324 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 10:45:47,326 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 [2019-12-07 10:45:47,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 10:45:47,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-12-07 10:45:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 10:45:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 10:45:47,347 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-12-07 10:45:47,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:45:47,348 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 10:45:47,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:45:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 10:45:47,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 10:45:47,348 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:45:47,348 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 10:45:47,348 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:45:47,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:45:47,349 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-12-07 10:45:47,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:45:47,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924140238] [2019-12-07 10:45:47,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:45:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:45:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:47,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924140238] [2019-12-07 10:45:47,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:45:47,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:45:47,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630951835] [2019-12-07 10:45:47,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:45:47,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:45:47,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:45:47,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:45:47,376 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-12-07 10:45:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:45:47,421 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-12-07 10:45:47,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:45:47,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-07 10:45:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:45:47,422 INFO L225 Difference]: With dead ends: 17 [2019-12-07 10:45:47,423 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 10:45:47,423 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:45:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 10:45:47,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-12-07 10:45:47,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 10:45:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-12-07 10:45:47,426 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2019-12-07 10:45:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:45:47,427 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-12-07 10:45:47,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:45:47,427 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-12-07 10:45:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 10:45:47,427 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:45:47,427 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 10:45:47,427 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:45:47,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:45:47,428 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-12-07 10:45:47,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:45:47,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805795929] [2019-12-07 10:45:47,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:45:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:45:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:47,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805795929] [2019-12-07 10:45:47,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:45:47,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 10:45:47,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762582234] [2019-12-07 10:45:47,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:45:47,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:45:47,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:45:47,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:45:47,451 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2019-12-07 10:45:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:45:47,463 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-12-07 10:45:47,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:45:47,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 10:45:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:45:47,464 INFO L225 Difference]: With dead ends: 14 [2019-12-07 10:45:47,464 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 10:45:47,464 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 [2019-12-07 10:45:47,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 10:45:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 10:45:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 10:45:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-12-07 10:45:47,467 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2019-12-07 10:45:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:45:47,468 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-12-07 10:45:47,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:45:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-12-07 10:45:47,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 10:45:47,468 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:45:47,468 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 10:45:47,469 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:45:47,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:45:47,469 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-12-07 10:45:47,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:45:47,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698065568] [2019-12-07 10:45:47,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:45:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:45:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:47,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698065568] [2019-12-07 10:45:47,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952778716] [2019-12-07 10:45:47,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/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 [2019-12-07 10:45:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:45:47,529 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 10:45:47,532 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:45:47,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:47,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 10:45:47,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2019-12-07 10:45:47,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7116420] [2019-12-07 10:45:47,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:45:47,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:45:47,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:45:47,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-12-07 10:45:47,584 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-12-07 10:45:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:45:47,625 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-12-07 10:45:47,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:45:47,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-12-07 10:45:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:45:47,626 INFO L225 Difference]: With dead ends: 14 [2019-12-07 10:45:47,626 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 10:45:47,627 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-12-07 10:45:47,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 10:45:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-12-07 10:45:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 10:45:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 10:45:47,630 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2019-12-07 10:45:47,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:45:47,630 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 10:45:47,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:45:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 10:45:47,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 10:45:47,631 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:45:47,631 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-12-07 10:45:47,832 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:45:47,833 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:45:47,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:45:47,834 INFO L82 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2019-12-07 10:45:47,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:45:47,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853206636] [2019-12-07 10:45:47,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:45:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:45:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:47,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853206636] [2019-12-07 10:45:47,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426997080] [2019-12-07 10:45:47,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/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 [2019-12-07 10:45:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:45:47,943 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 10:45:47,945 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:45:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:48,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 10:45:48,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2019-12-07 10:45:48,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60395582] [2019-12-07 10:45:48,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:45:48,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:45:48,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:45:48,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-12-07 10:45:48,003 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-12-07 10:45:48,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:45:48,032 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-12-07 10:45:48,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:45:48,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 10:45:48,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:45:48,033 INFO L225 Difference]: With dead ends: 12 [2019-12-07 10:45:48,033 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 10:45:48,033 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-12-07 10:45:48,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 10:45:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 10:45:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 10:45:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-12-07 10:45:48,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2019-12-07 10:45:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:45:48,036 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-12-07 10:45:48,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:45:48,037 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-12-07 10:45:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 10:45:48,037 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:45:48,037 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-12-07 10:45:48,237 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:45:48,238 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:45:48,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:45:48,239 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-12-07 10:45:48,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:45:48,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186525693] [2019-12-07 10:45:48,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:45:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:45:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:48,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186525693] [2019-12-07 10:45:48,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58396122] [2019-12-07 10:45:48,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/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 [2019-12-07 10:45:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:45:48,302 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 10:45:48,302 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:45:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:48,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 10:45:48,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-12-07 10:45:48,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351148092] [2019-12-07 10:45:48,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:45:48,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:45:48,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:45:48,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:45:48,306 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-12-07 10:45:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:45:48,318 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-12-07 10:45:48,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:45:48,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 10:45:48,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:45:48,319 INFO L225 Difference]: With dead ends: 18 [2019-12-07 10:45:48,319 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 10:45:48,319 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:45:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 10:45:48,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-12-07 10:45:48,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 10:45:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 10:45:48,321 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2019-12-07 10:45:48,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:45:48,322 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 10:45:48,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:45:48,322 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 10:45:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 10:45:48,322 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:45:48,322 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-12-07 10:45:48,523 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:45:48,524 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:45:48,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:45:48,524 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-12-07 10:45:48,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:45:48,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226314008] [2019-12-07 10:45:48,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:45:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:45:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:48,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226314008] [2019-12-07 10:45:48,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308684500] [2019-12-07 10:45:48,584 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/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 [2019-12-07 10:45:48,603 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 10:45:48,603 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 10:45:48,603 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 10:45:48,604 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:45:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:48,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 10:45:48,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-12-07 10:45:48,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483143512] [2019-12-07 10:45:48,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:45:48,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:45:48,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:45:48,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:45:48,609 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2019-12-07 10:45:48,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:45:48,630 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-12-07 10:45:48,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:45:48,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-12-07 10:45:48,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:45:48,631 INFO L225 Difference]: With dead ends: 23 [2019-12-07 10:45:48,631 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 10:45:48,632 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:45:48,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 10:45:48,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-12-07 10:45:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 10:45:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-12-07 10:45:48,635 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2019-12-07 10:45:48,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:45:48,636 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-12-07 10:45:48,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:45:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-12-07 10:45:48,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 10:45:48,637 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:45:48,637 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-12-07 10:45:48,837 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:45:48,837 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:45:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:45:48,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-12-07 10:45:48,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:45:48,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469202091] [2019-12-07 10:45:48,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:45:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:45:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:48,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469202091] [2019-12-07 10:45:48,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133149923] [2019-12-07 10:45:48,876 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/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 [2019-12-07 10:45:48,894 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 10:45:48,894 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 10:45:48,895 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 10:45:48,896 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:45:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:45:48,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 10:45:48,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 11 [2019-12-07 10:45:48,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220807906] [2019-12-07 10:45:48,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 10:45:48,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:45:48,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 10:45:48,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-12-07 10:45:48,973 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 13 states. [2019-12-07 10:45:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:45:49,228 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2019-12-07 10:45:49,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 10:45:49,228 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2019-12-07 10:45:49,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:45:49,229 INFO L225 Difference]: With dead ends: 28 [2019-12-07 10:45:49,229 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 10:45:49,230 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2019-12-07 10:45:49,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 10:45:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 10:45:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 10:45:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 10:45:49,230 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-12-07 10:45:49,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:45:49,230 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 10:45:49,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 10:45:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 10:45:49,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 10:45:49,431 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:45:49,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 10:45:49,532 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-12-07 10:45:49,532 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 10:45:49,533 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-12-07 10:45:49,533 INFO L249 CegarLoopResult]: At program point L21(lines 13 22) the Hoare annotation is: true [2019-12-07 10:45:49,533 INFO L246 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2019-12-07 10:45:49,533 INFO L246 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-12-07 10:45:49,533 INFO L242 CegarLoopResult]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse0 (<= 24 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~x~0 2147483624) .cse0 (<= ULTIMATE.start_main_~y~0 24)) (and (<= 23 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 23) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 2147483624))) (and (<= (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) 2147483625) (<= ULTIMATE.start_main_~y~0 25) .cse0) (and .cse0 (<= ULTIMATE.start_main_~y~0 2147483647) (<= ULTIMATE.start_main_~y~0 (+ (div (+ (* ULTIMATE.start_main_~x~0 (- 1)) 2147483625) 2) 1))))) [2019-12-07 10:45:49,533 INFO L246 CegarLoopResult]: For program point L17-3(lines 17 20) no Hoare annotation was computed. [2019-12-07 10:45:49,533 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-12-07 10:45:49,534 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-12-07 10:45:49,534 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 10:45:49,534 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 10:45:49,534 INFO L246 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2019-12-07 10:45:49,534 INFO L246 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-12-07 10:45:49,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:45:49 BoogieIcfgContainer [2019-12-07 10:45:49,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:45:49,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:45:49,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:45:49,546 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:45:49,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:45:47" (3/4) ... [2019-12-07 10:45:49,549 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 10:45:49,556 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 10:45:49,556 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 10:45:49,583 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f0cdc26a-3ec8-4ef0-b29c-e401d6b8c79b/bin/uautomizer/witness.graphml [2019-12-07 10:45:49,583 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:45:49,585 INFO L168 Benchmark]: Toolchain (without parser) took 2789.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 943.5 MB in the beginning and 876.2 MB in the end (delta: 67.3 MB). Peak memory consumption was 162.2 MB. Max. memory is 11.5 GB. [2019-12-07 10:45:49,585 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:45:49,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:45:49,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:45:49,586 INFO L168 Benchmark]: Boogie Preprocessor took 11.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:45:49,587 INFO L168 Benchmark]: RCFGBuilder took 128.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-12-07 10:45:49,587 INFO L168 Benchmark]: TraceAbstraction took 2424.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 881.6 MB in the end (delta: 190.6 MB). Peak memory consumption was 190.6 MB. Max. memory is 11.5 GB. [2019-12-07 10:45:49,588 INFO L168 Benchmark]: Witness Printer took 36.92 ms. Allocated memory is still 1.1 GB. Free memory was 881.6 MB in the beginning and 876.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:45:49,590 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 128.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2424.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 881.6 MB in the end (delta: 190.6 MB). Peak memory consumption was 190.6 MB. Max. memory is 11.5 GB. * Witness Printer took 36.92 ms. Allocated memory is still 1.1 GB. Free memory was 881.6 MB in the beginning and 876.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((x <= 2147483624 && 24 <= y) && y <= 24) || ((23 <= y && y <= 23) && x <= y + 2147483624)) || ((x + y <= 2147483625 && y <= 25) && 24 <= y)) || ((24 <= y && y <= 2147483647) && y <= (x * -1 + 2147483625) / 2 + 1) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 69 SDslu, 10 SDs, 0 SdLazy, 217 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=7, 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, 8 MinimizatonAttempts, 5 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 54 HoareAnnotationTreeSize, 2 FomulaSimplifications, 67 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 124 ConstructedInterpolants, 3 QuantifiedInterpolants, 6367 SizeOfPredicates, 2 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 5/98 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...