./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c -s /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/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 f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:39:34,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:39:34,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:39:34,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:39:34,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:39:34,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:39:34,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:39:34,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:39:34,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:39:34,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:39:34,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:39:34,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:39:34,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:39:34,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:39:34,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:39:34,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:39:34,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:39:34,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:39:34,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:39:34,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:39:34,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:39:34,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:39:34,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:39:34,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:39:34,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:39:34,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:39:34,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:39:34,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:39:34,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:39:34,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:39:34,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:39:34,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:39:34,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:39:34,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:39:34,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:39:34,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:39:34,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:39:34,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:39:34,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:39:34,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:39:34,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:39:34,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 23:39:34,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:39:34,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:39:34,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:39:34,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:39:34,838 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:39:34,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:39:34,838 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:39:34,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:39:34,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:39:34,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:39:34,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:39:34,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:39:34,843 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 23:39:34,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:39:34,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:39:34,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:39:34,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:39:34,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:39:34,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:39:34,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:39:34,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:39:34,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:39:34,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:39:34,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:39:34,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:39:34,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:39:34,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:39:34,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:39:34,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 [2020-11-29 23:39:35,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:39:35,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:39:35,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:39:35,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:39:35,203 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:39:35,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2020-11-29 23:39:35,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/data/53f58f062/ca8c3cb2efcc492b80d6a9fe42f95e1a/FLAG91143404b [2020-11-29 23:39:35,815 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:39:35,816 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2020-11-29 23:39:35,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/data/53f58f062/ca8c3cb2efcc492b80d6a9fe42f95e1a/FLAG91143404b [2020-11-29 23:39:36,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/data/53f58f062/ca8c3cb2efcc492b80d6a9fe42f95e1a [2020-11-29 23:39:36,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:39:36,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:39:36,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:39:36,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:39:36,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:39:36,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:39:36" (1/1) ... [2020-11-29 23:39:36,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d245c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36, skipping insertion in model container [2020-11-29 23:39:36,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:39:36" (1/1) ... [2020-11-29 23:39:36,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:39:36,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:39:36,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:39:36,452 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:39:36,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:39:36,517 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:39:36,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36 WrapperNode [2020-11-29 23:39:36,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:39:36,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:39:36,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:39:36,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:39:36,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36" (1/1) ... [2020-11-29 23:39:36,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36" (1/1) ... [2020-11-29 23:39:36,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:39:36,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:39:36,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:39:36,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:39:36,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36" (1/1) ... [2020-11-29 23:39:36,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36" (1/1) ... [2020-11-29 23:39:36,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36" (1/1) ... [2020-11-29 23:39:36,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36" (1/1) ... [2020-11-29 23:39:36,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36" (1/1) ... [2020-11-29 23:39:36,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36" (1/1) ... [2020-11-29 23:39:36,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36" (1/1) ... [2020-11-29 23:39:36,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:39:36,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:39:36,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:39:36,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:39:36,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/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 [2020-11-29 23:39:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:39:36,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:39:37,034 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:39:37,047 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 23:39:37,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:39:37 BoogieIcfgContainer [2020-11-29 23:39:37,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:39:37,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:39:37,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:39:37,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:39:37,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:39:36" (1/3) ... [2020-11-29 23:39:37,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f3880f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:39:37, skipping insertion in model container [2020-11-29 23:39:37,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:39:36" (2/3) ... [2020-11-29 23:39:37,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f3880f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:39:37, skipping insertion in model container [2020-11-29 23:39:37,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:39:37" (3/3) ... [2020-11-29 23:39:37,068 INFO L111 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1-modified.c [2020-11-29 23:39:37,093 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:39:37,098 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 23:39:37,119 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 23:39:37,153 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:39:37,154 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:39:37,154 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:39:37,154 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:39:37,154 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:39:37,175 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:39:37,175 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:39:37,176 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:39:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-29 23:39:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 23:39:37,197 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:39:37,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 23:39:37,198 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:39:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:39:37,206 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2020-11-29 23:39:37,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:39:37,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440881624] [2020-11-29 23:39:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:39:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:39:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:39:37,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440881624] [2020-11-29 23:39:37,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:39:37,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:39:37,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363847686] [2020-11-29 23:39:37,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:39:37,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:39:37,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:39:37,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:39:37,447 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-11-29 23:39:37,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:39:37,623 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2020-11-29 23:39:37,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:39:37,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-29 23:39:37,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:39:37,634 INFO L225 Difference]: With dead ends: 28 [2020-11-29 23:39:37,635 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 23:39:37,638 INFO L677 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 [2020-11-29 23:39:37,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 23:39:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 23:39:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 23:39:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-29 23:39:37,677 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2020-11-29 23:39:37,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:39:37,677 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 23:39:37,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:39:37,678 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-29 23:39:37,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 23:39:37,678 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:39:37,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 23:39:37,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:39:37,679 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:39:37,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:39:37,681 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2020-11-29 23:39:37,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:39:37,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384346142] [2020-11-29 23:39:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:39:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:39:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:39:37,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384346142] [2020-11-29 23:39:37,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:39:37,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:39:37,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955987633] [2020-11-29 23:39:37,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:39:37,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:39:37,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:39:37,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:39:37,738 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2020-11-29 23:39:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:39:37,817 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-11-29 23:39:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:39:37,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-29 23:39:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:39:37,819 INFO L225 Difference]: With dead ends: 16 [2020-11-29 23:39:37,820 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 23:39:37,821 INFO L677 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 [2020-11-29 23:39:37,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 23:39:37,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 23:39:37,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 23:39:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-29 23:39:37,826 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2020-11-29 23:39:37,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:39:37,826 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 23:39:37,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:39:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-29 23:39:37,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:39:37,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:39:37,831 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-11-29 23:39:37,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:39:37,834 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:39:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:39:37,839 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2020-11-29 23:39:37,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:39:37,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35033517] [2020-11-29 23:39:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:39:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:39:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:39:37,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35033517] [2020-11-29 23:39:37,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197701312] [2020-11-29 23:39:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/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 [2020-11-29 23:39:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:39:38,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:39:38,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:39:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:39:38,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:39:38,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-29 23:39:38,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421000770] [2020-11-29 23:39:38,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:39:38,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:39:38,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:39:38,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:39:38,111 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 5 states. [2020-11-29 23:39:38,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:39:38,243 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-11-29 23:39:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:39:38,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-29 23:39:38,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:39:38,245 INFO L225 Difference]: With dead ends: 32 [2020-11-29 23:39:38,245 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 23:39:38,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:39:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 23:39:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2020-11-29 23:39:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 23:39:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-11-29 23:39:38,252 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2020-11-29 23:39:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:39:38,253 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-29 23:39:38,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:39:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2020-11-29 23:39:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:39:38,254 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:39:38,254 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:39:38,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 23:39:38,455 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:39:38,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:39:38,456 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2020-11-29 23:39:38,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:39:38,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853348912] [2020-11-29 23:39:38,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:39:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:39:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:39:38,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853348912] [2020-11-29 23:39:38,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447661840] [2020-11-29 23:39:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/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 [2020-11-29 23:39:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:39:38,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:39:38,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:39:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:39:38,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:39:38,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-11-29 23:39:38,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202889714] [2020-11-29 23:39:38,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:39:38,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:39:38,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:39:38,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:39:38,685 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 8 states. [2020-11-29 23:39:38,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:39:38,981 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-11-29 23:39:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 23:39:38,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-11-29 23:39:38,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:39:38,985 INFO L225 Difference]: With dead ends: 48 [2020-11-29 23:39:38,985 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 23:39:38,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-11-29 23:39:38,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 23:39:38,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 31. [2020-11-29 23:39:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 23:39:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2020-11-29 23:39:39,002 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 9 [2020-11-29 23:39:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:39:39,003 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2020-11-29 23:39:39,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:39:39,004 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2020-11-29 23:39:39,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:39:39,005 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:39:39,005 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:39:39,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:39:39,207 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:39:39,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:39:39,207 INFO L82 PathProgramCache]: Analyzing trace with hash -22254561, now seen corresponding path program 1 times [2020-11-29 23:39:39,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:39:39,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194356854] [2020-11-29 23:39:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:39:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:39:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:39:39,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194356854] [2020-11-29 23:39:39,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204312920] [2020-11-29 23:39:39,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/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 [2020-11-29 23:39:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:39:39,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:39:39,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:39:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:39:39,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:39:39,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-29 23:39:39,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870825889] [2020-11-29 23:39:39,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:39:39,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:39:39,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:39:39,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:39:39,394 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 5 states. [2020-11-29 23:39:39,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:39:39,466 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2020-11-29 23:39:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:39:39,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-29 23:39:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:39:39,471 INFO L225 Difference]: With dead ends: 31 [2020-11-29 23:39:39,471 INFO L226 Difference]: Without dead ends: 30 [2020-11-29 23:39:39,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:39:39,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-29 23:39:39,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2020-11-29 23:39:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 23:39:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-11-29 23:39:39,478 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 9 [2020-11-29 23:39:39,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:39:39,479 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-11-29 23:39:39,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:39:39,479 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-11-29 23:39:39,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:39:39,483 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:39:39,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-11-29 23:39:39,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:39:39,685 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:39:39,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:39:39,685 INFO L82 PathProgramCache]: Analyzing trace with hash -22254369, now seen corresponding path program 1 times [2020-11-29 23:39:39,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:39:39,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966547339] [2020-11-29 23:39:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:39:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:39:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:39:39,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966547339] [2020-11-29 23:39:39,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420492577] [2020-11-29 23:39:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 23:39:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:39:39,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:39:39,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:39:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:39:39,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:39:39,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-29 23:39:39,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902527769] [2020-11-29 23:39:39,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:39:39,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:39:39,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:39:39,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:39:39,848 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 5 states. [2020-11-29 23:39:39,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:39:39,963 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2020-11-29 23:39:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:39:39,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-29 23:39:39,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:39:39,966 INFO L225 Difference]: With dead ends: 43 [2020-11-29 23:39:39,966 INFO L226 Difference]: Without dead ends: 42 [2020-11-29 23:39:39,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:39:39,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-29 23:39:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 20. [2020-11-29 23:39:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 23:39:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-11-29 23:39:39,982 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2020-11-29 23:39:39,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:39:39,983 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-11-29 23:39:39,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:39:39,983 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-11-29 23:39:39,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:39:39,987 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:39:39,988 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 23:39:40,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:39:40,189 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:39:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:39:40,189 INFO L82 PathProgramCache]: Analyzing trace with hash -573512235, now seen corresponding path program 1 times [2020-11-29 23:39:40,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:39:40,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760801477] [2020-11-29 23:39:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:39:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:39:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:39:40,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760801477] [2020-11-29 23:39:40,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698133222] [2020-11-29 23:39:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/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 [2020-11-29 23:39:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:39:40,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:39:40,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:39:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:39:40,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:39:40,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-29 23:39:40,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920603352] [2020-11-29 23:39:40,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 23:39:40,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:39:40,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 23:39:40,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:39:40,446 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 10 states. [2020-11-29 23:39:40,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:39:40,880 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-11-29 23:39:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 23:39:40,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-29 23:39:40,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:39:40,881 INFO L225 Difference]: With dead ends: 35 [2020-11-29 23:39:40,881 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:39:40,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2020-11-29 23:39:40,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:39:40,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:39:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:39:40,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:39:40,883 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 23:39:40,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:39:40,883 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:39:40,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 23:39:40,883 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:39:40,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:39:41,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 23:39:41,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:39:41,286 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-29 23:39:41,286 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:39:41,286 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 23:39:41,286 INFO L270 CegarLoopResult]: At program point L29(lines 16 30) the Hoare annotation is: (<= ULTIMATE.start_main_~y1~0 2147483647) [2020-11-29 23:39:41,286 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-29 23:39:41,286 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-29 23:39:41,286 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-29 23:39:41,287 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-11-29 23:39:41,287 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-29 23:39:41,287 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 23:39:41,287 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:39:41,287 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:39:41,287 INFO L274 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-11-29 23:39:41,287 INFO L274 CegarLoopResult]: For program point L20(lines 20 28) no Hoare annotation was computed. [2020-11-29 23:39:41,287 INFO L270 CegarLoopResult]: At program point L22-2(lines 21 27) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~y2~0) (<= ULTIMATE.start_main_~y2~0 2147483647) (<= ULTIMATE.start_main_~y1~0 2147483647) (<= 0 ULTIMATE.start_main_~y1~0)) [2020-11-29 23:39:41,287 INFO L274 CegarLoopResult]: For program point L20-1(lines 20 28) no Hoare annotation was computed. [2020-11-29 23:39:41,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:39:41 BoogieIcfgContainer [2020-11-29 23:39:41,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:39:41,302 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:39:41,302 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:39:41,302 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:39:41,303 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:39:37" (3/4) ... [2020-11-29 23:39:41,307 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:39:41,316 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-29 23:39:41,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 23:39:41,353 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_798a08a1-c1b1-4338-a5a7-2d4416dea16f/bin/uautomizer/witness.graphml [2020-11-29 23:39:41,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:39:41,356 INFO L168 Benchmark]: Toolchain (without parser) took 5137.62 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 66.3 MB in the beginning and 47.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:39:41,357 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 94.4 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:39:41,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.04 ms. Allocated memory is still 94.4 MB. Free memory was 66.1 MB in the beginning and 74.1 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:39:41,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.67 ms. Allocated memory is still 94.4 MB. Free memory was 74.1 MB in the beginning and 72.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:39:41,359 INFO L168 Benchmark]: Boogie Preprocessor took 45.35 ms. Allocated memory is still 94.4 MB. Free memory was 72.9 MB in the beginning and 71.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:39:41,359 INFO L168 Benchmark]: RCFGBuilder took 434.66 ms. Allocated memory is still 94.4 MB. Free memory was 71.9 MB in the beginning and 62.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:39:41,360 INFO L168 Benchmark]: TraceAbstraction took 4249.61 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 62.1 MB in the beginning and 49.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:39:41,361 INFO L168 Benchmark]: Witness Printer took 51.90 ms. Allocated memory is still 113.2 MB. Free memory was 49.3 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:39:41,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 94.4 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.04 ms. Allocated memory is still 94.4 MB. Free memory was 66.1 MB in the beginning and 74.1 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.67 ms. Allocated memory is still 94.4 MB. Free memory was 74.1 MB in the beginning and 72.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.35 ms. Allocated memory is still 94.4 MB. Free memory was 72.9 MB in the beginning and 71.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 434.66 ms. Allocated memory is still 94.4 MB. Free memory was 71.9 MB in the beginning and 62.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4249.61 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 62.1 MB in the beginning and 49.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. * Witness Printer took 51.90 ms. Allocated memory is still 113.2 MB. Free memory was 49.3 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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: 25]: 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: y1 <= 2147483647 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((0 <= y2 && y2 <= 2147483647) && y1 <= 2147483647) && 0 <= y1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 140 SDslu, 3 SDs, 0 SdLazy, 374 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, 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, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 244 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 179 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 6192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 117 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 13/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...