./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig5.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_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d38e7f8e829b6fb879eed3e9eda17afd63dbb323 .................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:34:19,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:34:19,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:34:19,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:34:19,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:34:19,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:34:19,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:34:19,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:34:19,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:34:19,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:34:19,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:34:19,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:34:19,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:34:19,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:34:19,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:34:19,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:34:19,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:34:19,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:34:19,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:34:19,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:34:19,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:34:19,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:34:19,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:34:19,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:34:19,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:34:19,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:34:19,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:34:19,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:34:19,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:34:19,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:34:19,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:34:19,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:34:19,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:34:19,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:34:19,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:34:19,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:34:19,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:34:19,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:34:19,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:34:19,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:34:19,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:34:19,865 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-28 07:34:19,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:34:19,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:34:19,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:34:19,915 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:34:19,916 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:34:19,916 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:34:19,916 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:34:19,917 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:34:19,917 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:34:19,917 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:34:19,918 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:34:19,919 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:34:19,919 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:34:19,920 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:34:19,920 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:34:19,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:34:19,921 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:34:19,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:34:19,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:34:19,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:34:19,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:34:19,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:34:19,923 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:34:19,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:34:19,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:34:19,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:34:19,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:34:19,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:34:19,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:34:19,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:34:19,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:34:19,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:34:19,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:34:19,928 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:34:19,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:34:19,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:34:19,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:34:19,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:34:19,930 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d38e7f8e829b6fb879eed3e9eda17afd63dbb323 [2020-11-28 07:34:20,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:34:20,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:34:20,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:34:20,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:34:20,281 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:34:20,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig5.c [2020-11-28 07:34:20,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/data/3af1d3d53/e918474d8c3b4e50bb40266e6d86dd22/FLAG2254b9d9f [2020-11-28 07:34:20,925 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:34:20,926 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig5.c [2020-11-28 07:34:20,933 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/data/3af1d3d53/e918474d8c3b4e50bb40266e6d86dd22/FLAG2254b9d9f [2020-11-28 07:34:21,327 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/data/3af1d3d53/e918474d8c3b4e50bb40266e6d86dd22 [2020-11-28 07:34:21,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:34:21,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:34:21,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:34:21,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:34:21,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:34:21,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:21" (1/1) ... [2020-11-28 07:34:21,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c905b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21, skipping insertion in model container [2020-11-28 07:34:21,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:21" (1/1) ... [2020-11-28 07:34:21,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:34:21,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:34:21,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:34:21,550 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:34:21,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:34:21,579 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:34:21,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21 WrapperNode [2020-11-28 07:34:21,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:34:21,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:34:21,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:34:21,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:34:21,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21" (1/1) ... [2020-11-28 07:34:21,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21" (1/1) ... [2020-11-28 07:34:21,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:34:21,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:34:21,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:34:21,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:34:21,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21" (1/1) ... [2020-11-28 07:34:21,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21" (1/1) ... [2020-11-28 07:34:21,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21" (1/1) ... [2020-11-28 07:34:21,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21" (1/1) ... [2020-11-28 07:34:21,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21" (1/1) ... [2020-11-28 07:34:21,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21" (1/1) ... [2020-11-28 07:34:21,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21" (1/1) ... [2020-11-28 07:34:21,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:34:21,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:34:21,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:34:21,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:34:21,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/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 [2020-11-28 07:34:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:34:21,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:34:21,936 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:34:21,938 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 07:34:21,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:21 BoogieIcfgContainer [2020-11-28 07:34:21,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:34:21,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:34:21,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:34:21,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:34:21,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:34:21" (1/3) ... [2020-11-28 07:34:21,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee7a127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:34:21, skipping insertion in model container [2020-11-28 07:34:21,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:21" (2/3) ... [2020-11-28 07:34:21,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee7a127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:34:21, skipping insertion in model container [2020-11-28 07:34:21,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:21" (3/3) ... [2020-11-28 07:34:21,962 INFO L111 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig5.c [2020-11-28 07:34:21,973 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:34:21,976 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 07:34:21,990 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 07:34:22,027 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:34:22,028 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:34:22,029 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:34:22,029 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:34:22,029 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:34:22,038 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:34:22,038 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:34:22,038 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:34:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-28 07:34:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 07:34:22,075 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:22,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 07:34:22,076 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:34:22,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:22,082 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-28 07:34:22,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:22,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147951186] [2020-11-28 07:34:22,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:22,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147951186] [2020-11-28 07:34:22,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:22,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:34:22,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604446737] [2020-11-28 07:34:22,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:22,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:22,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:22,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:22,256 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-11-28 07:34:22,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:22,353 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-11-28 07:34:22,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:22,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-28 07:34:22,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:22,362 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:34:22,362 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 07:34:22,365 INFO L677 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 [2020-11-28 07:34:22,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 07:34:22,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-11-28 07:34:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:34:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-28 07:34:22,415 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2020-11-28 07:34:22,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:22,415 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-28 07:34:22,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-28 07:34:22,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:34:22,417 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:22,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:34:22,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:34:22,418 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:34:22,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:22,425 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-11-28 07:34:22,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:22,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175517624] [2020-11-28 07:34:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:22,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175517624] [2020-11-28 07:34:22,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:22,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:34:22,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641252909] [2020-11-28 07:34:22,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:34:22,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:22,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:34:22,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:34:22,485 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2020-11-28 07:34:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:22,545 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-28 07:34:22,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:34:22,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 07:34:22,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:22,546 INFO L225 Difference]: With dead ends: 16 [2020-11-28 07:34:22,546 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 07:34:22,547 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 [2020-11-28 07:34:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 07:34:22,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 07:34:22,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 07:34:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-28 07:34:22,551 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2020-11-28 07:34:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:22,551 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-28 07:34:22,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:34:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-28 07:34:22,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:34:22,552 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:22,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:34:22,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:34:22,553 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:34:22,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:22,556 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-11-28 07:34:22,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:22,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525944481] [2020-11-28 07:34:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:22,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525944481] [2020-11-28 07:34:22,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:22,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:34:22,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127119380] [2020-11-28 07:34:22,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:22,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:22,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:22,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:22,601 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2020-11-28 07:34:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:22,656 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-11-28 07:34:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:22,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:34:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:22,658 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:34:22,659 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 07:34:22,659 INFO L677 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 [2020-11-28 07:34:22,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 07:34:22,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 07:34:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 07:34:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-28 07:34:22,663 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 6 [2020-11-28 07:34:22,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:22,664 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-28 07:34:22,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-28 07:34:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:34:22,664 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:22,665 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:22,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:34:22,665 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:34:22,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:22,669 INFO L82 PathProgramCache]: Analyzing trace with hash 861171249, now seen corresponding path program 1 times [2020-11-28 07:34:22,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:22,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938651387] [2020-11-28 07:34:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:22,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938651387] [2020-11-28 07:34:22,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761055248] [2020-11-28 07:34:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/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 [2020-11-28 07:34:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:22,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 07:34:22,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:34:22,963 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 07:34:23,009 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-28 07:34:23,034 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-28 07:34:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:23,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:34:23,243 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:34:23,321 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:34:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:23,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [235760113] [2020-11-28 07:34:23,416 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-11-28 07:34:23,416 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:34:23,425 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:34:23,434 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:34:23,435 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:34:23,777 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:34:24,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:34:24,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 3] total 15 [2020-11-28 07:34:24,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305314471] [2020-11-28 07:34:24,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:34:24,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:24,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:34:24,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-11-28 07:34:24,156 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2020-11-28 07:34:24,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:24,204 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-28 07:34:24,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:34:24,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 07:34:24,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:24,205 INFO L225 Difference]: With dead ends: 18 [2020-11-28 07:34:24,205 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:34:24,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-11-28 07:34:24,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:34:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:34:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:34:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:34:24,207 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-28 07:34:24,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:24,207 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:34:24,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:34:24,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:34:24,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:34:24,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2020-11-28 07:34:24,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:34:24,464 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-11-28 07:34:24,464 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:34:24,464 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2020-11-28 07:34:24,464 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2020-11-28 07:34:24,465 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-28 07:34:24,465 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-28 07:34:24,465 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-11-28 07:34:24,465 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2020-11-28 07:34:24,465 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:34:24,465 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2020-11-28 07:34:24,465 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-11-28 07:34:24,466 INFO L274 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-11-28 07:34:24,466 INFO L274 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-11-28 07:34:24,466 INFO L274 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-11-28 07:34:24,466 INFO L270 CegarLoopResult]: At program point L14-2(lines 14 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (<= ULTIMATE.start_main_~y~0 2)) [2020-11-28 07:34:24,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:34:24 BoogieIcfgContainer [2020-11-28 07:34:24,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:34:24,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:34:24,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:34:24,483 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:34:24,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:21" (3/4) ... [2020-11-28 07:34:24,487 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:34:24,496 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:34:24,496 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:34:24,496 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:34:24,549 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_44c70d1c-0d18-4c25-8a03-06015a0a791e/bin/utaipan/witness.graphml [2020-11-28 07:34:24,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:34:24,556 INFO L168 Benchmark]: Toolchain (without parser) took 3216.86 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 62.5 MB in the beginning and 75.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:24,557 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:34:24,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.46 ms. Allocated memory is still 92.3 MB. Free memory was 62.2 MB in the beginning and 71.3 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:24,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.69 ms. Allocated memory is still 92.3 MB. Free memory was 71.3 MB in the beginning and 70.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:34:24,560 INFO L168 Benchmark]: Boogie Preprocessor took 18.71 ms. Allocated memory is still 92.3 MB. Free memory was 70.2 MB in the beginning and 69.2 MB in the end (delta: 927.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:34:24,564 INFO L168 Benchmark]: RCFGBuilder took 306.71 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 58.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:24,564 INFO L168 Benchmark]: TraceAbstraction took 2541.09 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 58.5 MB in the beginning and 77.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:24,565 INFO L168 Benchmark]: Witness Printer took 66.54 ms. Allocated memory is still 121.6 MB. Free memory was 77.5 MB in the beginning and 75.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:24,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 243.46 ms. Allocated memory is still 92.3 MB. Free memory was 62.2 MB in the beginning and 71.3 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.69 ms. Allocated memory is still 92.3 MB. Free memory was 71.3 MB in the beginning and 70.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.71 ms. Allocated memory is still 92.3 MB. Free memory was 70.2 MB in the beginning and 69.2 MB in the end (delta: 927.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 306.71 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 58.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2541.09 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 58.5 MB in the beginning and 77.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Witness Printer took 66.54 ms. Allocated memory is still 121.6 MB. Free memory was 77.5 MB in the beginning and 75.4 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: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((1 <= y && x <= 2147483647) && 0 <= x + 2147483648) && y <= 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 21 SDslu, 1 SDs, 0 SdLazy, 69 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 15 HoareAnnotationTreeSize, 1 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 1 QuantifiedInterpolants, 3788 SizeOfPredicates, 0 NumberOfNonLiveVariables, 21 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 0/6 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: OVERALL_TIME[ms]: 362, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 27, TOOLS_POST_TIME[ms]: 31, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 27, TOOLS_QUANTIFIERELIM_TIME[ms]: 22, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 7, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 42, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME[ms]: 131, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 92, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 8, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 27, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 121, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 120, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 6, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 20, DAG_COMPRESSION_PROCESSED_NODES: 124, DAG_COMPRESSION_RETAINED_NODES: 35, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...