./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/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 32bit --witnessprinter.graph.data.programhash 3e87f89409ab3e763661ad617b0dadcb988e72d1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:23:10,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:23:10,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:23:10,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:23:10,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:23:10,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:23:10,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:23:10,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:23:10,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:23:10,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:23:10,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:23:10,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:23:10,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:23:10,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:23:10,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:23:10,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:23:10,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:23:10,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:23:10,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:23:10,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:23:10,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:23:10,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:23:10,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:23:10,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:23:10,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:23:10,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:23:10,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:23:10,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:23:10,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:23:10,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:23:10,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:23:10,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:23:10,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:23:10,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:23:10,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:23:10,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:23:10,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:23:10,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:23:10,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:23:10,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:23:10,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:23:10,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 02:23:10,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:23:10,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:23:10,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:23:10,511 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:23:10,512 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:23:10,512 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:23:10,512 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:23:10,512 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:23:10,512 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:23:10,513 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:23:10,513 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:23:10,513 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:23:10,513 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:23:10,514 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:23:10,514 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:23:10,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:23:10,515 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:23:10,515 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:23:10,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:23:10,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:23:10,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:23:10,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:23:10,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:23:10,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:23:10,517 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:23:10,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:23:10,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:23:10,517 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:23:10,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:23:10,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:23:10,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:23:10,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:23:10,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:23:10,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:23:10,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:23:10,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:23:10,520 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:23:10,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:23:10,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:23:10,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:23:10,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:23:10,521 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_e7632548-1523-4dec-912a-0858b6fb7ddf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e87f89409ab3e763661ad617b0dadcb988e72d1 [2020-11-30 02:23:10,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:23:10,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:23:10,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:23:10,782 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:23:10,782 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:23:10,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/bin/utaipan/../../sv-benchmarks/c/recursive/McCarthy91-2.c [2020-11-30 02:23:10,876 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/bin/utaipan/data/34ef37a04/b0be4d7705e54e1991b5ed72b043c898/FLAG4bc8f9ed7 [2020-11-30 02:23:11,417 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:23:11,418 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/sv-benchmarks/c/recursive/McCarthy91-2.c [2020-11-30 02:23:11,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/bin/utaipan/data/34ef37a04/b0be4d7705e54e1991b5ed72b043c898/FLAG4bc8f9ed7 [2020-11-30 02:23:11,811 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/bin/utaipan/data/34ef37a04/b0be4d7705e54e1991b5ed72b043c898 [2020-11-30 02:23:11,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:23:11,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:23:11,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:23:11,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:23:11,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:23:11,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:23:11" (1/1) ... [2020-11-30 02:23:11,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0ac4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:11, skipping insertion in model container [2020-11-30 02:23:11,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:23:11" (1/1) ... [2020-11-30 02:23:11,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:23:11,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:23:12,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:23:12,031 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:23:12,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:23:12,066 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:23:12,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:12 WrapperNode [2020-11-30 02:23:12,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:23:12,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:23:12,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:23:12,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:23:12,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:12" (1/1) ... [2020-11-30 02:23:12,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:12" (1/1) ... [2020-11-30 02:23:12,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:23:12,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:23:12,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:23:12,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:23:12,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:12" (1/1) ... [2020-11-30 02:23:12,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:12" (1/1) ... [2020-11-30 02:23:12,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:12" (1/1) ... [2020-11-30 02:23:12,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:12" (1/1) ... [2020-11-30 02:23:12,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:12" (1/1) ... [2020-11-30 02:23:12,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:12" (1/1) ... [2020-11-30 02:23:12,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:12" (1/1) ... [2020-11-30 02:23:12,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:23:12,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:23:12,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:23:12,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:23:12,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/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 02:23:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:23:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:23:12,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:23:12,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:23:12,184 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-11-30 02:23:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-11-30 02:23:12,697 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:23:12,697 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 02:23:12,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:23:12 BoogieIcfgContainer [2020-11-30 02:23:12,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:23:12,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:23:12,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:23:12,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:23:12,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:23:11" (1/3) ... [2020-11-30 02:23:12,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1745c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:23:12, skipping insertion in model container [2020-11-30 02:23:12,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:12" (2/3) ... [2020-11-30 02:23:12,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1745c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:23:12, skipping insertion in model container [2020-11-30 02:23:12,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:23:12" (3/3) ... [2020-11-30 02:23:12,707 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91-2.c [2020-11-30 02:23:12,718 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:23:12,722 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 02:23:12,734 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 02:23:12,757 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:23:12,757 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:23:12,757 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:23:12,757 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:23:12,758 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:23:12,758 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:23:12,758 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:23:12,758 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:23:12,773 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-30 02:23:12,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:23:12,776 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:12,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:23:12,777 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:12,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:12,783 INFO L82 PathProgramCache]: Analyzing trace with hash 83776360, now seen corresponding path program 1 times [2020-11-30 02:23:12,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:12,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986969324] [2020-11-30 02:23:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:12,969 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 02:23:12,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986969324] [2020-11-30 02:23:12,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:12,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:23:12,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298455095] [2020-11-30 02:23:12,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:23:12,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:12,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:23:12,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:23:12,992 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-11-30 02:23:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:13,199 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-11-30 02:23:13,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:23:13,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-30 02:23:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:13,213 INFO L225 Difference]: With dead ends: 46 [2020-11-30 02:23:13,214 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 02:23:13,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:23:13,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 02:23:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-11-30 02:23:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 02:23:13,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-11-30 02:23:13,262 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 5 [2020-11-30 02:23:13,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:13,263 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-11-30 02:23:13,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:23:13,263 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-11-30 02:23:13,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:23:13,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:13,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:23:13,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:23:13,265 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:13,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:13,266 INFO L82 PathProgramCache]: Analyzing trace with hash 83776520, now seen corresponding path program 1 times [2020-11-30 02:23:13,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:13,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287742890] [2020-11-30 02:23:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:13,299 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 02:23:13,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287742890] [2020-11-30 02:23:13,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:13,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:23:13,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493615029] [2020-11-30 02:23:13,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:13,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:13,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:13,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:13,304 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 3 states. [2020-11-30 02:23:13,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:13,333 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-11-30 02:23:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:13,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 02:23:13,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:13,343 INFO L225 Difference]: With dead ends: 40 [2020-11-30 02:23:13,343 INFO L226 Difference]: Without dead ends: 39 [2020-11-30 02:23:13,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:13,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-30 02:23:13,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-11-30 02:23:13,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 02:23:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-11-30 02:23:13,357 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 5 [2020-11-30 02:23:13,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:13,358 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-11-30 02:23:13,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:13,358 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-11-30 02:23:13,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:23:13,358 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:13,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:23:13,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:23:13,359 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:13,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:13,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1697900065, now seen corresponding path program 1 times [2020-11-30 02:23:13,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:13,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976840438] [2020-11-30 02:23:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:13,419 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 02:23:13,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976840438] [2020-11-30 02:23:13,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:13,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:23:13,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449435610] [2020-11-30 02:23:13,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:13,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:13,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:13,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:13,423 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2020-11-30 02:23:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:13,464 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2020-11-30 02:23:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:13,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-30 02:23:13,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:13,467 INFO L225 Difference]: With dead ends: 39 [2020-11-30 02:23:13,467 INFO L226 Difference]: Without dead ends: 38 [2020-11-30 02:23:13,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:13,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-30 02:23:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-11-30 02:23:13,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-30 02:23:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-11-30 02:23:13,484 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 6 [2020-11-30 02:23:13,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:13,485 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-11-30 02:23:13,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:13,485 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-11-30 02:23:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:23:13,486 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:13,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:23:13,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:23:13,486 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:13,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1697895100, now seen corresponding path program 1 times [2020-11-30 02:23:13,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:13,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221819576] [2020-11-30 02:23:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:13,558 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 02:23:13,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221819576] [2020-11-30 02:23:13,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:13,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:23:13,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287242596] [2020-11-30 02:23:13,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:23:13,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:13,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:23:13,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:23:13,561 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2020-11-30 02:23:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:13,724 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-11-30 02:23:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:23:13,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-30 02:23:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:13,726 INFO L225 Difference]: With dead ends: 50 [2020-11-30 02:23:13,726 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 02:23:13,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:23:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 02:23:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-11-30 02:23:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-30 02:23:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-11-30 02:23:13,751 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 6 [2020-11-30 02:23:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:13,752 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-11-30 02:23:13,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:23:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-11-30 02:23:13,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:23:13,753 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:13,753 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:23:13,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:23:13,754 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:13,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:13,755 INFO L82 PathProgramCache]: Analyzing trace with hash -757918958, now seen corresponding path program 1 times [2020-11-30 02:23:13,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:13,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449740122] [2020-11-30 02:23:13,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:13,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:23:13,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449740122] [2020-11-30 02:23:13,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:13,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:23:13,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454469274] [2020-11-30 02:23:13,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:23:13,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:13,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:23:13,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:23:13,843 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 5 states. [2020-11-30 02:23:13,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:13,966 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2020-11-30 02:23:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:23:13,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 02:23:13,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:13,968 INFO L225 Difference]: With dead ends: 68 [2020-11-30 02:23:13,968 INFO L226 Difference]: Without dead ends: 67 [2020-11-30 02:23:13,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:23:13,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-30 02:23:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2020-11-30 02:23:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-30 02:23:13,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-11-30 02:23:13,994 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 10 [2020-11-30 02:23:13,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:13,995 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-11-30 02:23:13,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:23:13,995 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-11-30 02:23:13,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:23:13,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:13,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:23:13,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:23:13,996 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:13,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:13,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1364699866, now seen corresponding path program 1 times [2020-11-30 02:23:13,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:13,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415664940] [2020-11-30 02:23:13,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:14,065 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 02:23:14,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415664940] [2020-11-30 02:23:14,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:14,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:23:14,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999397156] [2020-11-30 02:23:14,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:23:14,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:14,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:23:14,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:23:14,068 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 4 states. [2020-11-30 02:23:14,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:14,087 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-11-30 02:23:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:23:14,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-30 02:23:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:14,091 INFO L225 Difference]: With dead ends: 58 [2020-11-30 02:23:14,092 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 02:23:14,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:23:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 02:23:14,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-30 02:23:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 02:23:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-11-30 02:23:14,109 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 13 [2020-11-30 02:23:14,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:14,110 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-11-30 02:23:14,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:23:14,110 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-11-30 02:23:14,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:23:14,111 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:14,111 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:23:14,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:23:14,111 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:14,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:14,112 INFO L82 PathProgramCache]: Analyzing trace with hash -223659743, now seen corresponding path program 1 times [2020-11-30 02:23:14,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:14,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263767142] [2020-11-30 02:23:14,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:23:14,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263767142] [2020-11-30 02:23:14,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224096106] [2020-11-30 02:23:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/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 02:23:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:14,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 02:23:14,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:23:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:23:14,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:23:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:23:14,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2009632654] [2020-11-30 02:23:14,917 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2020-11-30 02:23:14,917 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:23:14,922 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 02:23:14,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:23:14,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2020-11-30 02:23:14,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495797589] [2020-11-30 02:23:14,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-30 02:23:14,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:14,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-30 02:23:14,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-11-30 02:23:14,927 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 22 states. [2020-11-30 02:23:15,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:15,863 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2020-11-30 02:23:15,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-30 02:23:15,864 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 18 [2020-11-30 02:23:15,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:15,865 INFO L225 Difference]: With dead ends: 83 [2020-11-30 02:23:15,865 INFO L226 Difference]: Without dead ends: 82 [2020-11-30 02:23:15,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=486, Invalid=1320, Unknown=0, NotChecked=0, Total=1806 [2020-11-30 02:23:15,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-30 02:23:15,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 46. [2020-11-30 02:23:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-30 02:23:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-11-30 02:23:15,886 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 18 [2020-11-30 02:23:15,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:15,887 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-11-30 02:23:15,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-30 02:23:15,888 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-11-30 02:23:15,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 02:23:15,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:15,890 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:23:16,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-30 02:23:16,105 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:16,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:16,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1656487595, now seen corresponding path program 1 times [2020-11-30 02:23:16,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:16,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336027559] [2020-11-30 02:23:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 02:23:16,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336027559] [2020-11-30 02:23:16,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:16,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:23:16,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460220198] [2020-11-30 02:23:16,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:23:16,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:16,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:23:16,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:23:16,198 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 7 states. [2020-11-30 02:23:16,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:16,408 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2020-11-30 02:23:16,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 02:23:16,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-30 02:23:16,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:16,411 INFO L225 Difference]: With dead ends: 98 [2020-11-30 02:23:16,411 INFO L226 Difference]: Without dead ends: 97 [2020-11-30 02:23:16,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:23:16,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-30 02:23:16,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2020-11-30 02:23:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-30 02:23:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2020-11-30 02:23:16,433 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 19 [2020-11-30 02:23:16,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:16,434 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2020-11-30 02:23:16,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:23:16,434 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2020-11-30 02:23:16,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-30 02:23:16,436 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:16,436 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-30 02:23:16,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:23:16,437 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:16,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:16,438 INFO L82 PathProgramCache]: Analyzing trace with hash -819894864, now seen corresponding path program 1 times [2020-11-30 02:23:16,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:16,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777712875] [2020-11-30 02:23:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:16,556 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-30 02:23:16,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777712875] [2020-11-30 02:23:16,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:16,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 02:23:16,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386748370] [2020-11-30 02:23:16,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:23:16,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:16,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:23:16,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:23:16,559 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 8 states. [2020-11-30 02:23:16,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:16,803 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2020-11-30 02:23:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 02:23:16,803 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-11-30 02:23:16,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:16,804 INFO L225 Difference]: With dead ends: 92 [2020-11-30 02:23:16,804 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:23:16,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:23:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:23:16,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:23:16,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:23:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:23:16,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-11-30 02:23:16,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:16,807 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:23:16,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:23:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:23:16,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:23:16,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 02:23:16,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:23:17,119 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2020-11-30 02:23:17,229 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-11-30 02:23:17,229 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:23:17,229 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-11-30 02:23:17,229 INFO L274 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-11-30 02:23:17,229 INFO L274 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-11-30 02:23:17,229 INFO L274 CegarLoopResult]: For program point L29-4(line 29) no Hoare annotation was computed. [2020-11-30 02:23:17,229 INFO L274 CegarLoopResult]: For program point L29-6(line 29) no Hoare annotation was computed. [2020-11-30 02:23:17,230 INFO L270 CegarLoopResult]: At program point L29-7(lines 29 33) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-30 02:23:17,230 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-11-30 02:23:17,230 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:23:17,230 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2020-11-30 02:23:17,230 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-11-30 02:23:17,230 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-30 02:23:17,230 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-11-30 02:23:17,230 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-30 02:23:17,231 INFO L270 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (and (or (and (<= f91_~x 100) (<= 91 f91_~x)) (not (<= |f91_#in~x| 2147483648)) (not (<= 91 |f91_#in~x|))) (or (not (<= 0 (+ |f91_#in~x| 2147483648))) (and (<= 0 (+ f91_~x 2147483648)) (<= f91_~x |f91_#in~x|)) (not (<= |f91_#in~x| 2147483647)))) [2020-11-30 02:23:17,231 INFO L274 CegarLoopResult]: For program point f91EXIT(lines 17 23) no Hoare annotation was computed. [2020-11-30 02:23:17,231 INFO L274 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2020-11-30 02:23:17,231 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-30 02:23:17,231 INFO L274 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-11-30 02:23:17,231 INFO L270 CegarLoopResult]: At program point L21-4(line 21) the Hoare annotation is: (let ((.cse0 (<= 91 |f91_#t~ret7|)) (.cse1 (<= |f91_#t~ret7| 2147483648))) (and (or (and .cse0 (<= f91_~x 100) (<= 91 f91_~x) .cse1) (not (<= |f91_#in~x| 2147483648)) (not (<= 91 |f91_#in~x|))) (or (not (<= 0 (+ |f91_#in~x| 2147483648))) (and .cse0 (<= 0 (+ f91_~x 2147483648)) .cse1 (<= f91_~x |f91_#in~x|)) (not (<= |f91_#in~x| 2147483647))))) [2020-11-30 02:23:17,231 INFO L274 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2020-11-30 02:23:17,232 INFO L274 CegarLoopResult]: For program point f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-11-30 02:23:17,232 INFO L277 CegarLoopResult]: At program point f91ENTRY(lines 17 23) the Hoare annotation is: true [2020-11-30 02:23:17,232 INFO L274 CegarLoopResult]: For program point f91FINAL(lines 17 23) no Hoare annotation was computed. [2020-11-30 02:23:17,232 INFO L274 CegarLoopResult]: For program point f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-11-30 02:23:17,232 INFO L274 CegarLoopResult]: For program point f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-11-30 02:23:17,232 INFO L274 CegarLoopResult]: For program point f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-11-30 02:23:17,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:23:17 BoogieIcfgContainer [2020-11-30 02:23:17,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:23:17,249 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:23:17,249 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:23:17,249 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:23:17,250 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:23:12" (3/4) ... [2020-11-30 02:23:17,253 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:23:17,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2020-11-30 02:23:17,267 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-30 02:23:17,267 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:23:17,268 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:23:17,268 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:23:17,331 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e7632548-1523-4dec-912a-0858b6fb7ddf/bin/utaipan/witness.graphml [2020-11-30 02:23:17,336 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:23:17,337 INFO L168 Benchmark]: Toolchain (without parser) took 5517.95 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 65.2 MB in the beginning and 45.7 MB in the end (delta: 19.5 MB). Peak memory consumption was 64.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:17,338 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory was 52.3 MB in the beginning and 52.3 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:23:17,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.27 ms. Allocated memory is still 96.5 MB. Free memory was 65.0 MB in the beginning and 74.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:17,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.03 ms. Allocated memory is still 96.5 MB. Free memory was 74.6 MB in the beginning and 73.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:23:17,339 INFO L168 Benchmark]: Boogie Preprocessor took 18.64 ms. Allocated memory is still 96.5 MB. Free memory was 73.4 MB in the beginning and 72.5 MB in the end (delta: 857.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:17,341 INFO L168 Benchmark]: RCFGBuilder took 580.48 ms. Allocated memory is still 96.5 MB. Free memory was 72.5 MB in the beginning and 56.6 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:17,342 INFO L168 Benchmark]: TraceAbstraction took 4547.14 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 56.2 MB in the beginning and 48.9 MB in the end (delta: 7.3 MB). Peak memory consumption was 54.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:17,343 INFO L168 Benchmark]: Witness Printer took 87.27 ms. Allocated memory is still 142.6 MB. Free memory was 48.9 MB in the beginning and 45.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:17,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory was 52.3 MB in the beginning and 52.3 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.27 ms. Allocated memory is still 96.5 MB. Free memory was 65.0 MB in the beginning and 74.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.03 ms. Allocated memory is still 96.5 MB. Free memory was 74.6 MB in the beginning and 73.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.64 ms. Allocated memory is still 96.5 MB. Free memory was 73.4 MB in the beginning and 72.5 MB in the end (delta: 857.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 580.48 ms. Allocated memory is still 96.5 MB. Free memory was 72.5 MB in the beginning and 56.6 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4547.14 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 56.2 MB in the beginning and 48.9 MB in the end (delta: 7.3 MB). Peak memory consumption was 54.9 MB. Max. memory is 16.1 GB. * Witness Printer took 87.27 ms. Allocated memory is still 142.6 MB. Free memory was 48.9 MB in the beginning and 45.7 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: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: 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: 29]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 176 SDtfs, 321 SDslu, 295 SDs, 0 SdLazy, 617 SolverSat, 178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 70 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 59 PreInvPairs, 59 NumberOfFragments, 99 HoareAnnotationTreeSize, 59 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 371 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 6280 SizeOfPredicates, 4 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 56/68 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...