./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.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_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/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 d28857c86a3c83fc75b1b8cf8125f1c52a370911 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:56:57,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:56:57,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:56:57,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:56:57,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:56:57,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:56:57,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:56:57,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:56:57,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:56:57,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:56:57,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:56:57,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:56:57,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:56:57,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:56:57,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:56:57,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:56:57,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:56:57,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:56:57,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:56:57,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:56:57,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:56:57,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:56:57,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:56:57,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:56:57,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:56:57,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:56:57,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:56:57,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:56:57,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:56:57,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:56:57,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:56:57,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:56:57,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:56:57,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:56:57,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:56:57,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:56:57,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:56:57,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:56:57,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:56:57,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:56:57,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:56:57,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-30 01:56:57,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:56:57,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:56:57,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:56:57,808 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:56:57,808 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:56:57,808 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:56:57,809 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:56:57,809 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:56:57,809 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:56:57,809 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:56:57,810 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:56:57,811 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:56:57,811 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:56:57,811 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:56:57,811 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:56:57,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:56:57,812 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:56:57,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:56:57,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:56:57,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:56:57,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:56:57,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:56:57,821 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 01:56:57,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:56:57,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:56:57,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:56:57,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:56:57,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:56:57,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:56:57,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:56:57,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:56:57,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:56:57,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:56:57,831 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:56:57,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:56:57,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:56:57,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:56:57,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:56:57,832 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_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28857c86a3c83fc75b1b8cf8125f1c52a370911 [2020-11-30 01:56:58,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:56:58,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:56:58,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:56:58,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:56:58,192 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:56:58,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2020-11-30 01:56:58,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/data/909674591/d3a29cbaa0714c1783f6be4dc28abf15/FLAGa9e6f7d0c [2020-11-30 01:56:58,830 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:56:58,831 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2020-11-30 01:56:58,837 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/data/909674591/d3a29cbaa0714c1783f6be4dc28abf15/FLAGa9e6f7d0c [2020-11-30 01:56:59,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/data/909674591/d3a29cbaa0714c1783f6be4dc28abf15 [2020-11-30 01:56:59,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:56:59,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:56:59,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:56:59,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:56:59,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:56:59,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:56:59" (1/1) ... [2020-11-30 01:56:59,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21722da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59, skipping insertion in model container [2020-11-30 01:56:59,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:56:59" (1/1) ... [2020-11-30 01:56:59,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:56:59,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:56:59,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:56:59,459 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:56:59,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:56:59,518 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:56:59,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59 WrapperNode [2020-11-30 01:56:59,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:56:59,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:56:59,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:56:59,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:56:59,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59" (1/1) ... [2020-11-30 01:56:59,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59" (1/1) ... [2020-11-30 01:56:59,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:56:59,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:56:59,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:56:59,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:56:59,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59" (1/1) ... [2020-11-30 01:56:59,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59" (1/1) ... [2020-11-30 01:56:59,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59" (1/1) ... [2020-11-30 01:56:59,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59" (1/1) ... [2020-11-30 01:56:59,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59" (1/1) ... [2020-11-30 01:56:59,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59" (1/1) ... [2020-11-30 01:56:59,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59" (1/1) ... [2020-11-30 01:56:59,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:56:59,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:56:59,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:56:59,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:56:59,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/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 [2020-11-30 01:56:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:56:59,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:56:59,922 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:56:59,923 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-30 01:56:59,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:56:59 BoogieIcfgContainer [2020-11-30 01:56:59,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:56:59,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:56:59,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:56:59,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:56:59,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:56:59" (1/3) ... [2020-11-30 01:56:59,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52691c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:56:59, skipping insertion in model container [2020-11-30 01:56:59,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:56:59" (2/3) ... [2020-11-30 01:56:59,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52691c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:56:59, skipping insertion in model container [2020-11-30 01:56:59,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:56:59" (3/3) ... [2020-11-30 01:56:59,935 INFO L111 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn.c [2020-11-30 01:56:59,948 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:56:59,954 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 01:56:59,964 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 01:56:59,989 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:56:59,990 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:56:59,990 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:56:59,990 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:56:59,990 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:56:59,990 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:56:59,991 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:56:59,991 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:57:00,005 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-30 01:57:00,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 01:57:00,011 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:00,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 01:57:00,012 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:57:00,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:00,019 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-30 01:57:00,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:57:00,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541725201] [2020-11-30 01:57:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:57:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:00,363 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-11-30 01:57:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:00,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541725201] [2020-11-30 01:57:00,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:57:00,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:57:00,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553393590] [2020-11-30 01:57:00,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:57:00,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:57:00,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:57:00,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:57:00,411 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-11-30 01:57:00,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:57:00,537 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-30 01:57:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:57:00,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-30 01:57:00,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:57:00,555 INFO L225 Difference]: With dead ends: 11 [2020-11-30 01:57:00,556 INFO L226 Difference]: Without dead ends: 8 [2020-11-30 01:57:00,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:57:00,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-30 01:57:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-30 01:57:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 01:57:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-30 01:57:00,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2020-11-30 01:57:00,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:57:00,632 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-30 01:57:00,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:57:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-30 01:57:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 01:57:00,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:00,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 01:57:00,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:57:00,634 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:57:00,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:00,639 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-11-30 01:57:00,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:57:00,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850101174] [2020-11-30 01:57:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:57:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:00,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:00,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850101174] [2020-11-30 01:57:00,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:57:00,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:57:00,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684462640] [2020-11-30 01:57:00,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:57:00,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:57:00,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:57:00,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:57:00,741 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2020-11-30 01:57:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:57:00,811 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-30 01:57:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:57:00,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-30 01:57:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:57:00,812 INFO L225 Difference]: With dead ends: 15 [2020-11-30 01:57:00,812 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 01:57:00,813 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 [2020-11-30 01:57:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 01:57:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-11-30 01:57:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 01:57:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-30 01:57:00,818 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2020-11-30 01:57:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:57:00,819 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-30 01:57:00,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:57:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-30 01:57:00,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 01:57:00,819 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:00,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:57:00,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:57:00,820 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:57:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:00,821 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-11-30 01:57:00,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:57:00,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832793674] [2020-11-30 01:57:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:57:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:00,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832793674] [2020-11-30 01:57:00,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:57:00,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:57:00,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619333377] [2020-11-30 01:57:00,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:57:00,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:57:00,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:57:00,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:57:00,929 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-11-30 01:57:00,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:57:00,967 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-11-30 01:57:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:57:00,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-30 01:57:00,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:57:00,969 INFO L225 Difference]: With dead ends: 12 [2020-11-30 01:57:00,969 INFO L226 Difference]: Without dead ends: 11 [2020-11-30 01:57:00,970 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 [2020-11-30 01:57:00,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-30 01:57:00,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-30 01:57:00,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 01:57:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-30 01:57:00,976 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2020-11-30 01:57:00,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:57:00,976 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-30 01:57:00,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:57:00,977 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-30 01:57:00,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:57:00,979 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:00,979 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-11-30 01:57:00,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:57:00,980 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:57:00,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:00,981 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2020-11-30 01:57:00,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:57:00,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838438778] [2020-11-30 01:57:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:57:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:01,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838438778] [2020-11-30 01:57:01,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761268707] [2020-11-30 01:57:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/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 [2020-11-30 01:57:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:01,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:57:01,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:57:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:01,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:57:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:01,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1169204512] [2020-11-30 01:57:01,331 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-30 01:57:01,331 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:57:01,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:57:01,343 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:57:01,344 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:57:01,562 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-30 01:57:03,096 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:57:03,323 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-11-30 01:57:03,501 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-11-30 01:57:03,535 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:57:03,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:57:03,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2020-11-30 01:57:03,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206034935] [2020-11-30 01:57:03,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:57:03,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:57:03,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:57:03,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:57:03,538 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2020-11-30 01:57:03,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:57:03,669 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-11-30 01:57:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:57:03,671 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-11-30 01:57:03,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:57:03,672 INFO L225 Difference]: With dead ends: 28 [2020-11-30 01:57:03,672 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 01:57:03,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-11-30 01:57:03,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 01:57:03,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-11-30 01:57:03,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 01:57:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-11-30 01:57:03,678 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 10 [2020-11-30 01:57:03,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:57:03,678 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-11-30 01:57:03,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:57:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-11-30 01:57:03,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 01:57:03,679 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:03,680 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2020-11-30 01:57:03,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2020-11-30 01:57:03,881 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:57:03,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:03,881 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2020-11-30 01:57:03,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:57:03,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207698286] [2020-11-30 01:57:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:57:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:04,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207698286] [2020-11-30 01:57:04,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430234310] [2020-11-30 01:57:04,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/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 [2020-11-30 01:57:04,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-30 01:57:04,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:57:04,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:57:04,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:57:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:04,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:57:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:04,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1729573046] [2020-11-30 01:57:04,343 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-30 01:57:04,343 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:57:04,344 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:57:04,344 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:57:04,344 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:57:06,641 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:57:06,912 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-11-30 01:57:07,111 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-11-30 01:57:07,159 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:57:07,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:57:07,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2020-11-30 01:57:07,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776616197] [2020-11-30 01:57:07,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-30 01:57:07,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:57:07,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-30 01:57:07,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-11-30 01:57:07,163 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 22 states. [2020-11-30 01:57:07,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:57:07,472 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-11-30 01:57:07,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-30 01:57:07,474 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-11-30 01:57:07,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:57:07,475 INFO L225 Difference]: With dead ends: 58 [2020-11-30 01:57:07,475 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 01:57:07,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=319, Invalid=1013, Unknown=0, NotChecked=0, Total=1332 [2020-11-30 01:57:07,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 01:57:07,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-11-30 01:57:07,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-30 01:57:07,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-11-30 01:57:07,482 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 25 [2020-11-30 01:57:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:57:07,483 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-11-30 01:57:07,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-30 01:57:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-11-30 01:57:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-30 01:57:07,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:07,485 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2020-11-30 01:57:07,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-30 01:57:07,710 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:57:07,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:07,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 3 times [2020-11-30 01:57:07,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:57:07,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250793138] [2020-11-30 01:57:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:57:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:08,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250793138] [2020-11-30 01:57:08,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032715948] [2020-11-30 01:57:08,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/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 [2020-11-30 01:57:08,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 01:57:08,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:57:08,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-30 01:57:08,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:57:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:08,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:57:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:08,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [721742951] [2020-11-30 01:57:08,983 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-30 01:57:08,984 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:57:08,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:57:08,984 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:57:08,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:57:09,989 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:57:10,292 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-11-30 01:57:10,464 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:57:10,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:57:10,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2020-11-30 01:57:10,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880580193] [2020-11-30 01:57:10,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-30 01:57:10,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:57:10,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-30 01:57:10,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2020-11-30 01:57:10,468 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 46 states. [2020-11-30 01:57:11,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:57:11,338 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-11-30 01:57:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-30 01:57:11,340 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 55 [2020-11-30 01:57:11,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:57:11,343 INFO L225 Difference]: With dead ends: 118 [2020-11-30 01:57:11,343 INFO L226 Difference]: Without dead ends: 117 [2020-11-30 01:57:11,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1345, Invalid=3911, Unknown=0, NotChecked=0, Total=5256 [2020-11-30 01:57:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-30 01:57:11,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-11-30 01:57:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-30 01:57:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2020-11-30 01:57:11,358 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 55 [2020-11-30 01:57:11,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:57:11,358 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2020-11-30 01:57:11,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-30 01:57:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2020-11-30 01:57:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-30 01:57:11,363 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:11,363 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2020-11-30 01:57:11,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-11-30 01:57:11,586 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:57:11,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:11,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 4 times [2020-11-30 01:57:11,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:57:11,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499028925] [2020-11-30 01:57:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:57:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:12,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499028925] [2020-11-30 01:57:12,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628776564] [2020-11-30 01:57:12,840 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:57:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:12,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-30 01:57:12,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:57:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:12,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:57:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:57:16,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [976396874] [2020-11-30 01:57:16,205 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-30 01:57:16,205 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:57:16,205 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:57:16,206 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:57:16,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:57:17,257 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:57:17,729 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:57:17,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:57:17,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 92 [2020-11-30 01:57:17,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479544147] [2020-11-30 01:57:17,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-11-30 01:57:17,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:57:17,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-11-30 01:57:17,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2268, Invalid=7434, Unknown=0, NotChecked=0, Total=9702 [2020-11-30 01:57:17,737 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 94 states. [2020-11-30 01:57:20,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:57:20,003 INFO L93 Difference]: Finished difference Result 238 states and 261 transitions. [2020-11-30 01:57:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-11-30 01:57:20,003 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 115 [2020-11-30 01:57:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:57:20,008 INFO L225 Difference]: With dead ends: 238 [2020-11-30 01:57:20,008 INFO L226 Difference]: Without dead ends: 237 [2020-11-30 01:57:20,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4770 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=5557, Invalid=15323, Unknown=0, NotChecked=0, Total=20880 [2020-11-30 01:57:20,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-11-30 01:57:20,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2020-11-30 01:57:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-11-30 01:57:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2020-11-30 01:57:20,034 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 115 [2020-11-30 01:57:20,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:57:20,034 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2020-11-30 01:57:20,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-11-30 01:57:20,035 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2020-11-30 01:57:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-11-30 01:57:20,039 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:20,040 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1] [2020-11-30 01:57:20,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:57:20,266 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:57:20,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:20,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1923709923, now seen corresponding path program 5 times [2020-11-30 01:57:20,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:57:20,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655911407] [2020-11-30 01:57:20,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:57:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 4711 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-11-30 01:57:24,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655911407] [2020-11-30 01:57:24,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:57:24,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2020-11-30 01:57:24,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642920883] [2020-11-30 01:57:24,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-11-30 01:57:24,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:57:24,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-11-30 01:57:24,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-11-30 01:57:24,171 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 63 states. [2020-11-30 01:57:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:57:24,429 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2020-11-30 01:57:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-11-30 01:57:24,430 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 235 [2020-11-30 01:57:24,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:57:24,431 INFO L225 Difference]: With dead ends: 236 [2020-11-30 01:57:24,431 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:57:24,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 30 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-11-30 01:57:24,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:57:24,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:57:24,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:57:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:57:24,434 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 235 [2020-11-30 01:57:24,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:57:24,434 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:57:24,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-11-30 01:57:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:57:24,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:57:24,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-11-30 01:57:24,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:57:25,102 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 155 [2020-11-30 01:57:25,104 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2020-11-30 01:57:25,104 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:57:25,104 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2020-11-30 01:57:25,105 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-30 01:57:25,105 INFO L274 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-11-30 01:57:25,105 INFO L270 CegarLoopResult]: At program point L7-2(lines 7 12) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_mlog_~res~0))) (or (and (<= ULTIMATE.start_mlog_~x 1048575) .cse0 (<= ULTIMATE.start_mlog_~res~0 11)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 9) (<= ULTIMATE.start_mlog_~x 4194303)) (and .cse0 (<= ULTIMATE.start_mlog_~x 7) (<= ULTIMATE.start_mlog_~res~0 2147483629)) (and (<= ULTIMATE.start_mlog_~x 536870911) .cse0 (<= ULTIMATE.start_mlog_~res~0 2)) (and .cse0 (<= ULTIMATE.start_mlog_~x 8388607) (<= ULTIMATE.start_mlog_~res~0 8)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 2147483630) (<= ULTIMATE.start_mlog_~x 3)) (and (<= ULTIMATE.start_mlog_~res~0 14) (<= ULTIMATE.start_mlog_~x 131071) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~x 1) (<= ULTIMATE.start_mlog_~res~0 2147483631)) (and .cse0 (<= ULTIMATE.start_mlog_~x 31) (<= ULTIMATE.start_mlog_~res~0 2147483627)) (and .cse0 (<= ULTIMATE.start_mlog_~x 67108863) (<= ULTIMATE.start_mlog_~res~0 5)) (and (<= ULTIMATE.start_mlog_~res~0 1) .cse0 (<= ULTIMATE.start_mlog_~x 1073741823)) (and .cse0 (<= ULTIMATE.start_mlog_~x 268435455) (<= ULTIMATE.start_mlog_~res~0 3)) (and (<= ULTIMATE.start_mlog_~x 2097151) (<= ULTIMATE.start_mlog_~res~0 10) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 17) (<= ULTIMATE.start_mlog_~x 16383)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 2147483628) (<= ULTIMATE.start_mlog_~x 15)) (and (<= ULTIMATE.start_mlog_~res~0 22) .cse0 (<= ULTIMATE.start_mlog_~x 511)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 6) (<= ULTIMATE.start_mlog_~x 33554431)) (and (<= ULTIMATE.start_mlog_~x 262143) .cse0 (<= ULTIMATE.start_mlog_~res~0 13)) (and (<= ULTIMATE.start_mlog_~res~0 21) .cse0 (<= ULTIMATE.start_mlog_~x 1023)) (and (<= ULTIMATE.start_mlog_~res~0 19) .cse0 (<= ULTIMATE.start_mlog_~x 4095)) (and (<= ULTIMATE.start_mlog_~res~0 2147483625) .cse0 (<= ULTIMATE.start_mlog_~x 127)) (and (<= ULTIMATE.start_mlog_~res~0 2147483624) .cse0 (<= ULTIMATE.start_mlog_~x 255)) (and .cse0 (<= ULTIMATE.start_mlog_~x 2147483647) (<= ULTIMATE.start_mlog_~res~0 0)) (and (<= ULTIMATE.start_mlog_~res~0 2147483626) (<= ULTIMATE.start_mlog_~x 63) .cse0) (and (<= ULTIMATE.start_mlog_~res~0 7) .cse0 (<= ULTIMATE.start_mlog_~x 16777215)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 12) (<= ULTIMATE.start_mlog_~x 524287)) (and (<= ULTIMATE.start_mlog_~res~0 15) .cse0 (<= ULTIMATE.start_mlog_~x 65535)) (and (<= ULTIMATE.start_mlog_~res~0 16) .cse0 (<= ULTIMATE.start_mlog_~x 32767)) (and (<= ULTIMATE.start_mlog_~x 8191) .cse0 (<= ULTIMATE.start_mlog_~res~0 18)) (and (<= ULTIMATE.start_mlog_~res~0 20) .cse0 (<= ULTIMATE.start_mlog_~x 2047)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 4) (<= ULTIMATE.start_mlog_~x 134217727)))) [2020-11-30 01:57:25,105 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2020-11-30 01:57:25,105 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2020-11-30 01:57:25,105 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:57:25,106 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-11-30 01:57:25,106 INFO L274 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-11-30 01:57:25,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:57:25 BoogieIcfgContainer [2020-11-30 01:57:25,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:57:25,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:57:25,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:57:25,130 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:57:25,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:56:59" (3/4) ... [2020-11-30 01:57:25,134 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:57:25,142 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 01:57:25,142 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:57:25,142 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:57:25,194 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a27f90ed-c869-4a2a-ae96-5b39dd9039ba/bin/utaipan/witness.graphml [2020-11-30 01:57:25,194 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:57:25,201 INFO L168 Benchmark]: Toolchain (without parser) took 25974.05 ms. Allocated memory was 109.1 MB in the beginning and 308.3 MB in the end (delta: 199.2 MB). Free memory was 73.0 MB in the beginning and 235.5 MB in the end (delta: -162.5 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:25,201 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 109.1 MB. Free memory is still 88.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:57:25,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.65 ms. Allocated memory is still 109.1 MB. Free memory was 72.8 MB in the beginning and 87.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:25,202 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.68 ms. Allocated memory is still 109.1 MB. Free memory was 87.0 MB in the beginning and 85.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:57:25,203 INFO L168 Benchmark]: Boogie Preprocessor took 24.20 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 84.7 MB in the end (delta: 672.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:57:25,203 INFO L168 Benchmark]: RCFGBuilder took 331.03 ms. Allocated memory is still 109.1 MB. Free memory was 84.7 MB in the beginning and 73.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:25,204 INFO L168 Benchmark]: TraceAbstraction took 25202.91 ms. Allocated memory was 109.1 MB in the beginning and 308.3 MB in the end (delta: 199.2 MB). Free memory was 72.9 MB in the beginning and 238.6 MB in the end (delta: -165.7 MB). Peak memory consumption was 172.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:25,204 INFO L168 Benchmark]: Witness Printer took 64.86 ms. Allocated memory is still 308.3 MB. Free memory was 238.6 MB in the beginning and 235.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:25,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 109.1 MB. Free memory is still 88.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.65 ms. Allocated memory is still 109.1 MB. Free memory was 72.8 MB in the beginning and 87.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.68 ms. Allocated memory is still 109.1 MB. Free memory was 87.0 MB in the beginning and 85.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.20 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 84.7 MB in the end (delta: 672.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 331.03 ms. Allocated memory is still 109.1 MB. Free memory was 84.7 MB in the beginning and 73.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25202.91 ms. Allocated memory was 109.1 MB in the beginning and 308.3 MB in the end (delta: 199.2 MB). Free memory was 72.9 MB in the beginning and 238.6 MB in the end (delta: -165.7 MB). Peak memory consumption was 172.2 MB. Max. memory is 16.1 GB. * Witness Printer took 64.86 ms. Allocated memory is still 308.3 MB. Free memory was 238.6 MB in the beginning and 235.5 MB in the end (delta: 3.1 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: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: 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: 7]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((x <= 1048575 && 0 <= res) && res <= 11) || ((0 <= res && res <= 9) && x <= 4194303)) || ((0 <= res && x <= 7) && res <= 2147483629)) || ((x <= 536870911 && 0 <= res) && res <= 2)) || ((0 <= res && x <= 8388607) && res <= 8)) || ((0 <= res && res <= 2147483630) && x <= 3)) || ((res <= 14 && x <= 131071) && 0 <= res)) || ((0 <= res && x <= 1) && res <= 2147483631)) || ((0 <= res && x <= 31) && res <= 2147483627)) || ((0 <= res && x <= 67108863) && res <= 5)) || ((res <= 1 && 0 <= res) && x <= 1073741823)) || ((0 <= res && x <= 268435455) && res <= 3)) || ((x <= 2097151 && res <= 10) && 0 <= res)) || ((0 <= res && res <= 17) && x <= 16383)) || ((0 <= res && res <= 2147483628) && x <= 15)) || ((res <= 22 && 0 <= res) && x <= 511)) || ((0 <= res && res <= 6) && x <= 33554431)) || ((x <= 262143 && 0 <= res) && res <= 13)) || ((res <= 21 && 0 <= res) && x <= 1023)) || ((res <= 19 && 0 <= res) && x <= 4095)) || ((res <= 2147483625 && 0 <= res) && x <= 127)) || ((res <= 2147483624 && 0 <= res) && x <= 255)) || ((0 <= res && x <= 2147483647) && res <= 0)) || ((res <= 2147483626 && x <= 63) && 0 <= res)) || ((res <= 7 && 0 <= res) && x <= 16777215)) || ((0 <= res && res <= 12) && x <= 524287)) || ((res <= 15 && 0 <= res) && x <= 65535)) || ((res <= 16 && 0 <= res) && x <= 32767)) || ((x <= 8191 && 0 <= res) && res <= 18)) || ((res <= 20 && 0 <= res) && x <= 2047)) || ((0 <= res && res <= 4) && x <= 134217727) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.4s, OverallIterations: 8, TraceHistogramMax: 47, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 736 SDslu, 334 SDs, 0 SdLazy, 685 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 871 GetRequests, 506 SyntacticMatches, 30 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6795 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 32 NumberOfFragments, 311 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 659 NumberOfCodeBlocks, 659 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 848 ConstructedInterpolants, 0 QuantifiedInterpolants, 330848 SizeOfPredicates, 41 NumberOfNonLiveVariables, 479 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 5359/10033 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...