./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/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 7271d13f0b7b365fd7ecc81e9b65f9e103181ef3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 17:45:56,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 17:45:56,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 17:45:56,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 17:45:56,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 17:45:56,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 17:45:56,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 17:45:56,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 17:45:56,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 17:45:56,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 17:45:56,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 17:45:56,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 17:45:56,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 17:45:56,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 17:45:56,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 17:45:56,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 17:45:56,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 17:45:56,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 17:45:56,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 17:45:56,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 17:45:56,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 17:45:56,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 17:45:56,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 17:45:56,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 17:45:56,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 17:45:56,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 17:45:56,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 17:45:56,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 17:45:56,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 17:45:56,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 17:45:56,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 17:45:56,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 17:45:56,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 17:45:56,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 17:45:56,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 17:45:56,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 17:45:56,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 17:45:56,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 17:45:56,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 17:45:56,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 17:45:56,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 17:45:56,728 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 17:45:56,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 17:45:56,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 17:45:56,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 17:45:56,745 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 17:45:56,746 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 17:45:56,746 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 17:45:56,746 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 17:45:56,746 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 17:45:56,746 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 17:45:56,746 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 17:45:56,746 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 17:45:56,746 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 17:45:56,747 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 17:45:56,747 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 17:45:56,747 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 17:45:56,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 17:45:56,747 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 17:45:56,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 17:45:56,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 17:45:56,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 17:45:56,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 17:45:56,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 17:45:56,748 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 17:45:56,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 17:45:56,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 17:45:56,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 17:45:56,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 17:45:56,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 17:45:56,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:45:56,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 17:45:56,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 17:45:56,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 17:45:56,749 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 17:45:56,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 17:45:56,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 17:45:56,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 17:45:56,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 17:45:56,750 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_eb043c42-40a2-4cf5-b88f-19508ada9464/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7271d13f0b7b365fd7ecc81e9b65f9e103181ef3 [2020-12-09 17:45:56,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 17:45:56,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 17:45:56,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 17:45:56,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 17:45:56,949 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 17:45:56,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/../../sv-benchmarks/c/termination-numeric/Binomial.c [2020-12-09 17:45:56,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/data/60b3e1287/22dc703f4bea41d7affb79dde9afffb8/FLAG299e0c745 [2020-12-09 17:45:57,356 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 17:45:57,356 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/sv-benchmarks/c/termination-numeric/Binomial.c [2020-12-09 17:45:57,361 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/data/60b3e1287/22dc703f4bea41d7affb79dde9afffb8/FLAG299e0c745 [2020-12-09 17:45:57,372 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/data/60b3e1287/22dc703f4bea41d7affb79dde9afffb8 [2020-12-09 17:45:57,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 17:45:57,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 17:45:57,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 17:45:57,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 17:45:57,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 17:45:57,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:45:57" (1/1) ... [2020-12-09 17:45:57,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a724a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57, skipping insertion in model container [2020-12-09 17:45:57,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:45:57" (1/1) ... [2020-12-09 17:45:57,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 17:45:57,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 17:45:57,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:45:57,510 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 17:45:57,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:45:57,533 INFO L208 MainTranslator]: Completed translation [2020-12-09 17:45:57,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57 WrapperNode [2020-12-09 17:45:57,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 17:45:57,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 17:45:57,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 17:45:57,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 17:45:57,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57" (1/1) ... [2020-12-09 17:45:57,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57" (1/1) ... [2020-12-09 17:45:57,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 17:45:57,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 17:45:57,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 17:45:57,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 17:45:57,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57" (1/1) ... [2020-12-09 17:45:57,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57" (1/1) ... [2020-12-09 17:45:57,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57" (1/1) ... [2020-12-09 17:45:57,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57" (1/1) ... [2020-12-09 17:45:57,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57" (1/1) ... [2020-12-09 17:45:57,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57" (1/1) ... [2020-12-09 17:45:57,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57" (1/1) ... [2020-12-09 17:45:57,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 17:45:57,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 17:45:57,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 17:45:57,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 17:45:57,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/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 [2020-12-09 17:45:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2020-12-09 17:45:57,653 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2020-12-09 17:45:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 17:45:57,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 17:45:57,950 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 17:45:57,950 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-09 17:45:57,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:45:57 BoogieIcfgContainer [2020-12-09 17:45:57,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 17:45:57,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 17:45:57,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 17:45:57,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 17:45:57,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:45:57" (1/3) ... [2020-12-09 17:45:57,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd0da1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:45:57, skipping insertion in model container [2020-12-09 17:45:57,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:45:57" (2/3) ... [2020-12-09 17:45:57,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd0da1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:45:57, skipping insertion in model container [2020-12-09 17:45:57,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:45:57" (3/3) ... [2020-12-09 17:45:57,959 INFO L111 eAbstractionObserver]: Analyzing ICFG Binomial.c [2020-12-09 17:45:57,969 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 17:45:57,971 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-12-09 17:45:57,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-12-09 17:45:57,997 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 17:45:57,997 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 17:45:57,997 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 17:45:57,997 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 17:45:57,997 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 17:45:57,997 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 17:45:57,997 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 17:45:57,997 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 17:45:58,011 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-12-09 17:45:58,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 17:45:58,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:45:58,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 17:45:58,015 INFO L429 AbstractCegarLoop]: === Iteration 1 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:45:58,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:45:58,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1395358707, now seen corresponding path program 1 times [2020-12-09 17:45:58,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:45:58,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973908520] [2020-12-09 17:45:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:45:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:45:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:45:58,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973908520] [2020-12-09 17:45:58,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:45:58,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 17:45:58,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466129797] [2020-12-09 17:45:58,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:45:58,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:45:58,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:45:58,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:45:58,145 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-12-09 17:45:58,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:45:58,219 INFO L93 Difference]: Finished difference Result 134 states and 154 transitions. [2020-12-09 17:45:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:45:58,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 17:45:58,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:45:58,226 INFO L225 Difference]: With dead ends: 134 [2020-12-09 17:45:58,226 INFO L226 Difference]: Without dead ends: 66 [2020-12-09 17:45:58,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:45:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-09 17:45:58,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-09 17:45:58,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-09 17:45:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2020-12-09 17:45:58,265 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 6 [2020-12-09 17:45:58,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:45:58,265 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2020-12-09 17:45:58,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:45:58,265 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2020-12-09 17:45:58,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 17:45:58,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:45:58,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:45:58,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 17:45:58,267 INFO L429 AbstractCegarLoop]: === Iteration 2 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:45:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:45:58,268 INFO L82 PathProgramCache]: Analyzing trace with hash 154399188, now seen corresponding path program 1 times [2020-12-09 17:45:58,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:45:58,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469283716] [2020-12-09 17:45:58,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:45:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:45:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:45:58,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469283716] [2020-12-09 17:45:58,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:45:58,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 17:45:58,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791300690] [2020-12-09 17:45:58,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:45:58,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:45:58,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:45:58,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:45:58,302 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 4 states. [2020-12-09 17:45:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:45:58,374 INFO L93 Difference]: Finished difference Result 189 states and 216 transitions. [2020-12-09 17:45:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 17:45:58,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 17:45:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:45:58,377 INFO L225 Difference]: With dead ends: 189 [2020-12-09 17:45:58,377 INFO L226 Difference]: Without dead ends: 126 [2020-12-09 17:45:58,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:45:58,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-09 17:45:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 69. [2020-12-09 17:45:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 17:45:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-12-09 17:45:58,396 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 10 [2020-12-09 17:45:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:45:58,397 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-12-09 17:45:58,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:45:58,397 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-12-09 17:45:58,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 17:45:58,397 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:45:58,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:45:58,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 17:45:58,398 INFO L429 AbstractCegarLoop]: === Iteration 3 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:45:58,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:45:58,399 INFO L82 PathProgramCache]: Analyzing trace with hash 133902980, now seen corresponding path program 1 times [2020-12-09 17:45:58,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:45:58,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301127365] [2020-12-09 17:45:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:45:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:45:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:45:58,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301127365] [2020-12-09 17:45:58,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:45:58,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 17:45:58,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196927767] [2020-12-09 17:45:58,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 17:45:58,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:45:58,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 17:45:58,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:45:58,444 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 6 states. [2020-12-09 17:45:58,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:45:58,530 INFO L93 Difference]: Finished difference Result 199 states and 240 transitions. [2020-12-09 17:45:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 17:45:58,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 17:45:58,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:45:58,534 INFO L225 Difference]: With dead ends: 199 [2020-12-09 17:45:58,534 INFO L226 Difference]: Without dead ends: 136 [2020-12-09 17:45:58,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 17:45:58,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-09 17:45:58,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 102. [2020-12-09 17:45:58,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-09 17:45:58,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-12-09 17:45:58,557 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 10 [2020-12-09 17:45:58,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:45:58,558 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-12-09 17:45:58,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 17:45:58,558 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-12-09 17:45:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 17:45:58,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:45:58,559 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:45:58,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 17:45:58,559 INFO L429 AbstractCegarLoop]: === Iteration 4 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:45:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:45:58,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2023579039, now seen corresponding path program 1 times [2020-12-09 17:45:58,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:45:58,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324532360] [2020-12-09 17:45:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:45:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:45:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:45:58,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324532360] [2020-12-09 17:45:58,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:45:58,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 17:45:58,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672057001] [2020-12-09 17:45:58,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 17:45:58,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:45:58,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 17:45:58,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:45:58,606 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states. [2020-12-09 17:45:58,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:45:58,711 INFO L93 Difference]: Finished difference Result 272 states and 374 transitions. [2020-12-09 17:45:58,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 17:45:58,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 17:45:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:45:58,713 INFO L225 Difference]: With dead ends: 272 [2020-12-09 17:45:58,714 INFO L226 Difference]: Without dead ends: 176 [2020-12-09 17:45:58,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 17:45:58,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-09 17:45:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 116. [2020-12-09 17:45:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-09 17:45:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 152 transitions. [2020-12-09 17:45:58,729 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 152 transitions. Word has length 16 [2020-12-09 17:45:58,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:45:58,729 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 152 transitions. [2020-12-09 17:45:58,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 17:45:58,729 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 152 transitions. [2020-12-09 17:45:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 17:45:58,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:45:58,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:45:58,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 17:45:58,730 INFO L429 AbstractCegarLoop]: === Iteration 5 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:45:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:45:58,731 INFO L82 PathProgramCache]: Analyzing trace with hash -282699610, now seen corresponding path program 1 times [2020-12-09 17:45:58,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:45:58,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972806236] [2020-12-09 17:45:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:45:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:45:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 17:45:58,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972806236] [2020-12-09 17:45:58,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:45:58,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 17:45:58,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054426595] [2020-12-09 17:45:58,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 17:45:58,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:45:58,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 17:45:58,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:45:58,763 INFO L87 Difference]: Start difference. First operand 116 states and 152 transitions. Second operand 5 states. [2020-12-09 17:45:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:45:58,859 INFO L93 Difference]: Finished difference Result 173 states and 199 transitions. [2020-12-09 17:45:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 17:45:58,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-09 17:45:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:45:58,861 INFO L225 Difference]: With dead ends: 173 [2020-12-09 17:45:58,861 INFO L226 Difference]: Without dead ends: 172 [2020-12-09 17:45:58,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 17:45:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-12-09 17:45:58,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 118. [2020-12-09 17:45:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-09 17:45:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 154 transitions. [2020-12-09 17:45:58,877 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 154 transitions. Word has length 19 [2020-12-09 17:45:58,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:45:58,878 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 154 transitions. [2020-12-09 17:45:58,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 17:45:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 154 transitions. [2020-12-09 17:45:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 17:45:58,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:45:58,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:45:58,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 17:45:58,879 INFO L429 AbstractCegarLoop]: === Iteration 6 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:45:58,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:45:58,880 INFO L82 PathProgramCache]: Analyzing trace with hash -173753234, now seen corresponding path program 1 times [2020-12-09 17:45:58,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:45:58,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158842733] [2020-12-09 17:45:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:45:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:45:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 17:45:58,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158842733] [2020-12-09 17:45:58,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:45:58,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 17:45:58,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874959958] [2020-12-09 17:45:58,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 17:45:58,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:45:58,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 17:45:58,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:45:58,918 INFO L87 Difference]: Start difference. First operand 118 states and 154 transitions. Second operand 5 states. [2020-12-09 17:45:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:45:58,996 INFO L93 Difference]: Finished difference Result 144 states and 168 transitions. [2020-12-09 17:45:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 17:45:58,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-09 17:45:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:45:58,997 INFO L225 Difference]: With dead ends: 144 [2020-12-09 17:45:58,998 INFO L226 Difference]: Without dead ends: 142 [2020-12-09 17:45:58,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 17:45:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-09 17:45:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 116. [2020-12-09 17:45:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-09 17:45:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 150 transitions. [2020-12-09 17:45:59,007 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 150 transitions. Word has length 20 [2020-12-09 17:45:59,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:45:59,007 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 150 transitions. [2020-12-09 17:45:59,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 17:45:59,007 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 150 transitions. [2020-12-09 17:45:59,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 17:45:59,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:45:59,008 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:45:59,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 17:45:59,008 INFO L429 AbstractCegarLoop]: === Iteration 7 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:45:59,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:45:59,008 INFO L82 PathProgramCache]: Analyzing trace with hash -482951234, now seen corresponding path program 1 times [2020-12-09 17:45:59,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:45:59,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909111673] [2020-12-09 17:45:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:45:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:45:59,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 17:45:59,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909111673] [2020-12-09 17:45:59,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:45:59,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 17:45:59,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978427817] [2020-12-09 17:45:59,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 17:45:59,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:45:59,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 17:45:59,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 17:45:59,053 INFO L87 Difference]: Start difference. First operand 116 states and 150 transitions. Second operand 7 states. [2020-12-09 17:45:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:45:59,178 INFO L93 Difference]: Finished difference Result 278 states and 350 transitions. [2020-12-09 17:45:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 17:45:59,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-09 17:45:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:45:59,179 INFO L225 Difference]: With dead ends: 278 [2020-12-09 17:45:59,180 INFO L226 Difference]: Without dead ends: 173 [2020-12-09 17:45:59,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-09 17:45:59,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-09 17:45:59,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 122. [2020-12-09 17:45:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-09 17:45:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 156 transitions. [2020-12-09 17:45:59,191 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 156 transitions. Word has length 24 [2020-12-09 17:45:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:45:59,191 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 156 transitions. [2020-12-09 17:45:59,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 17:45:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 156 transitions. [2020-12-09 17:45:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 17:45:59,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:45:59,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:45:59,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 17:45:59,192 INFO L429 AbstractCegarLoop]: === Iteration 8 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:45:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:45:59,193 INFO L82 PathProgramCache]: Analyzing trace with hash 539716203, now seen corresponding path program 1 times [2020-12-09 17:45:59,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:45:59,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849736242] [2020-12-09 17:45:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:45:59,200 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:45:59,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638730034] [2020-12-09 17:45:59,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/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 [2020-12-09 17:45:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:45:59,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 17:45:59,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:45:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 17:45:59,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:45:59,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849736242] [2020-12-09 17:45:59,318 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:45:59,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638730034] [2020-12-09 17:45:59,318 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: cannot handle proper monomial [2020-12-09 17:45:59,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [376537392] [2020-12-09 17:45:59,332 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2020-12-09 17:45:59,332 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:45:59,335 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:45:59,339 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:45:59,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:45:59,694 INFO L197 IcfgInterpreter]: Interpreting procedure fact with input of size 6 for LOIs [2020-12-09 17:45:59,696 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:46:00,313 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2020-12-09 17:46:00,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:46:00,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-09 17:46:00,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588134507] [2020-12-09 17:46:00,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 17:46:00,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:46:00,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 17:46:00,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-09 17:46:00,348 INFO L87 Difference]: Start difference. First operand 122 states and 156 transitions. Second operand 13 states. [2020-12-09 17:46:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:46:00,555 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2020-12-09 17:46:00,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 17:46:00,556 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-12-09 17:46:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:46:00,557 INFO L225 Difference]: With dead ends: 160 [2020-12-09 17:46:00,557 INFO L226 Difference]: Without dead ends: 156 [2020-12-09 17:46:00,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-09 17:46:00,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-09 17:46:00,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 135. [2020-12-09 17:46:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-12-09 17:46:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 167 transitions. [2020-12-09 17:46:00,571 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 167 transitions. Word has length 27 [2020-12-09 17:46:00,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:46:00,571 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 167 transitions. [2020-12-09 17:46:00,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 17:46:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 167 transitions. [2020-12-09 17:46:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 17:46:00,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:46:00,572 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:46:00,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-09 17:46:00,774 INFO L429 AbstractCegarLoop]: === Iteration 9 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:46:00,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:46:00,774 INFO L82 PathProgramCache]: Analyzing trace with hash -534920370, now seen corresponding path program 1 times [2020-12-09 17:46:00,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:46:00,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878716577] [2020-12-09 17:46:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:46:00,784 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:46:00,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740371501] [2020-12-09 17:46:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/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 [2020-12-09 17:46:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:00,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 17:46:00,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:46:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 17:46:00,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:46:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 17:46:00,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878716577] [2020-12-09 17:46:00,963 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:46:00,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740371501] [2020-12-09 17:46:00,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:46:00,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 17:46:00,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254054378] [2020-12-09 17:46:00,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 17:46:00,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:46:00,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 17:46:00,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:46:00,964 INFO L87 Difference]: Start difference. First operand 135 states and 167 transitions. Second operand 6 states. [2020-12-09 17:46:01,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:46:01,030 INFO L93 Difference]: Finished difference Result 245 states and 310 transitions. [2020-12-09 17:46:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 17:46:01,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-12-09 17:46:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:46:01,032 INFO L225 Difference]: With dead ends: 245 [2020-12-09 17:46:01,033 INFO L226 Difference]: Without dead ends: 244 [2020-12-09 17:46:01,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-09 17:46:01,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-12-09 17:46:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 215. [2020-12-09 17:46:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-12-09 17:46:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 297 transitions. [2020-12-09 17:46:01,045 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 297 transitions. Word has length 32 [2020-12-09 17:46:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:46:01,046 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 297 transitions. [2020-12-09 17:46:01,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 17:46:01,046 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 297 transitions. [2020-12-09 17:46:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-09 17:46:01,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:46:01,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:46:01,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:46:01,248 INFO L429 AbstractCegarLoop]: === Iteration 10 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:46:01,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:46:01,250 INFO L82 PathProgramCache]: Analyzing trace with hash 597337838, now seen corresponding path program 1 times [2020-12-09 17:46:01,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:46:01,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680563072] [2020-12-09 17:46:01,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:46:01,281 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:46:01,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993211607] [2020-12-09 17:46:01,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/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 [2020-12-09 17:46:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:01,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 17:46:01,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:46:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 17:46:01,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:46:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 17:46:01,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680563072] [2020-12-09 17:46:01,364 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:46:01,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993211607] [2020-12-09 17:46:01,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:46:01,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 17:46:01,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648818443] [2020-12-09 17:46:01,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 17:46:01,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:46:01,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 17:46:01,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:46:01,365 INFO L87 Difference]: Start difference. First operand 215 states and 297 transitions. Second operand 6 states. [2020-12-09 17:46:01,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:46:01,388 INFO L93 Difference]: Finished difference Result 215 states and 297 transitions. [2020-12-09 17:46:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:46:01,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-12-09 17:46:01,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:46:01,391 INFO L225 Difference]: With dead ends: 215 [2020-12-09 17:46:01,391 INFO L226 Difference]: Without dead ends: 214 [2020-12-09 17:46:01,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 17:46:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-12-09 17:46:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-12-09 17:46:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-09 17:46:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 293 transitions. [2020-12-09 17:46:01,403 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 293 transitions. Word has length 33 [2020-12-09 17:46:01,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:46:01,403 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 293 transitions. [2020-12-09 17:46:01,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 17:46:01,404 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 293 transitions. [2020-12-09 17:46:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 17:46:01,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:46:01,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:46:01,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:46:01,606 INFO L429 AbstractCegarLoop]: === Iteration 11 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:46:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:46:01,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1483950380, now seen corresponding path program 1 times [2020-12-09 17:46:01,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:46:01,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656179213] [2020-12-09 17:46:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:46:01,614 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:46:01,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709037854] [2020-12-09 17:46:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/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 [2020-12-09 17:46:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:01,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 17:46:01,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:46:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 17:46:01,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:46:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 17:46:01,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656179213] [2020-12-09 17:46:01,707 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:46:01,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709037854] [2020-12-09 17:46:01,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:46:01,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 17:46:01,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81170452] [2020-12-09 17:46:01,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 17:46:01,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:46:01,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 17:46:01,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:46:01,709 INFO L87 Difference]: Start difference. First operand 214 states and 293 transitions. Second operand 6 states. [2020-12-09 17:46:01,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:46:01,774 INFO L93 Difference]: Finished difference Result 330 states and 442 transitions. [2020-12-09 17:46:01,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 17:46:01,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-12-09 17:46:01,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:46:01,777 INFO L225 Difference]: With dead ends: 330 [2020-12-09 17:46:01,777 INFO L226 Difference]: Without dead ends: 329 [2020-12-09 17:46:01,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-09 17:46:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-12-09 17:46:01,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 304. [2020-12-09 17:46:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-12-09 17:46:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 438 transitions. [2020-12-09 17:46:01,795 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 438 transitions. Word has length 35 [2020-12-09 17:46:01,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:46:01,795 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 438 transitions. [2020-12-09 17:46:01,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 17:46:01,795 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 438 transitions. [2020-12-09 17:46:01,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 17:46:01,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:46:01,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:46:01,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:46:01,998 INFO L429 AbstractCegarLoop]: === Iteration 12 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:46:01,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:46:02,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1242178608, now seen corresponding path program 1 times [2020-12-09 17:46:02,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:46:02,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450591100] [2020-12-09 17:46:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:46:02,025 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:46:02,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925178118] [2020-12-09 17:46:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:46:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:02,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 17:46:02,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:46:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 17:46:02,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:46:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 17:46:02,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450591100] [2020-12-09 17:46:02,207 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:46:02,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925178118] [2020-12-09 17:46:02,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:46:02,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 17:46:02,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63961041] [2020-12-09 17:46:02,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 17:46:02,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:46:02,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 17:46:02,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:46:02,208 INFO L87 Difference]: Start difference. First operand 304 states and 438 transitions. Second operand 6 states. [2020-12-09 17:46:02,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:46:02,238 INFO L93 Difference]: Finished difference Result 304 states and 438 transitions. [2020-12-09 17:46:02,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:46:02,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-12-09 17:46:02,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:46:02,240 INFO L225 Difference]: With dead ends: 304 [2020-12-09 17:46:02,240 INFO L226 Difference]: Without dead ends: 303 [2020-12-09 17:46:02,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 17:46:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-12-09 17:46:02,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2020-12-09 17:46:02,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-12-09 17:46:02,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 436 transitions. [2020-12-09 17:46:02,261 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 436 transitions. Word has length 36 [2020-12-09 17:46:02,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:46:02,261 INFO L481 AbstractCegarLoop]: Abstraction has 303 states and 436 transitions. [2020-12-09 17:46:02,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 17:46:02,261 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 436 transitions. [2020-12-09 17:46:02,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-09 17:46:02,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:46:02,262 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:46:02,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-12-09 17:46:02,463 INFO L429 AbstractCegarLoop]: === Iteration 13 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:46:02,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:46:02,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2100636619, now seen corresponding path program 1 times [2020-12-09 17:46:02,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:46:02,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049494443] [2020-12-09 17:46:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:46:02,472 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:46:02,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737001654] [2020-12-09 17:46:02,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:46:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:02,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 17:46:02,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:46:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 17:46:02,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:46:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 17:46:02,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049494443] [2020-12-09 17:46:02,664 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:46:02,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737001654] [2020-12-09 17:46:02,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [941489726] [2020-12-09 17:46:02,666 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2020-12-09 17:46:02,666 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:46:02,667 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:46:02,667 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:46:02,667 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:46:03,180 INFO L197 IcfgInterpreter]: Interpreting procedure fact with input of size 6 for LOIs [2020-12-09 17:46:03,182 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:46:04,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 17:46:04,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7, 7] total 29 [2020-12-09 17:46:04,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214799570] [2020-12-09 17:46:04,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-09 17:46:04,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:46:04,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-09 17:46:04,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2020-12-09 17:46:04,619 INFO L87 Difference]: Start difference. First operand 303 states and 436 transitions. Second operand 18 states. [2020-12-09 17:46:04,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:46:04,940 INFO L93 Difference]: Finished difference Result 637 states and 925 transitions. [2020-12-09 17:46:04,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-09 17:46:04,940 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 39 [2020-12-09 17:46:04,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:46:04,942 INFO L225 Difference]: With dead ends: 637 [2020-12-09 17:46:04,943 INFO L226 Difference]: Without dead ends: 373 [2020-12-09 17:46:04,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 77 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2020-12-09 17:46:04,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-12-09 17:46:04,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 331. [2020-12-09 17:46:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-12-09 17:46:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 464 transitions. [2020-12-09 17:46:04,964 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 464 transitions. Word has length 39 [2020-12-09 17:46:04,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:46:04,964 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 464 transitions. [2020-12-09 17:46:04,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-09 17:46:04,965 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 464 transitions. [2020-12-09 17:46:04,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-09 17:46:04,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:46:04,965 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:46:05,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:46:05,167 INFO L429 AbstractCegarLoop]: === Iteration 14 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:46:05,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:46:05,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1273784600, now seen corresponding path program 1 times [2020-12-09 17:46:05,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:46:05,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797017588] [2020-12-09 17:46:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:46:05,173 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:46:05,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92523815] [2020-12-09 17:46:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:46:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:05,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 17:46:05,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:46:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 17:46:05,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:46:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 17:46:05,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797017588] [2020-12-09 17:46:05,332 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:46:05,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92523815] [2020-12-09 17:46:05,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1441407688] [2020-12-09 17:46:05,334 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2020-12-09 17:46:05,334 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:46:05,335 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:46:05,335 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:46:05,335 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:46:05,684 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) 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:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) 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) [2020-12-09 17:46:05,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 17:46:05,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-12-09 17:46:05,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358600875] [2020-12-09 17:46:05,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 17:46:05,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:46:05,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 17:46:05,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-09 17:46:05,688 INFO L87 Difference]: Start difference. First operand 331 states and 464 transitions. Second operand 13 states. [2020-12-09 17:46:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:46:05,980 INFO L93 Difference]: Finished difference Result 694 states and 955 transitions. [2020-12-09 17:46:05,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-09 17:46:05,980 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-12-09 17:46:05,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:46:05,984 INFO L225 Difference]: With dead ends: 694 [2020-12-09 17:46:05,984 INFO L226 Difference]: Without dead ends: 479 [2020-12-09 17:46:05,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-12-09 17:46:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-12-09 17:46:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 356. [2020-12-09 17:46:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-12-09 17:46:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 492 transitions. [2020-12-09 17:46:06,006 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 492 transitions. Word has length 43 [2020-12-09 17:46:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:46:06,006 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 492 transitions. [2020-12-09 17:46:06,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 17:46:06,006 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 492 transitions. [2020-12-09 17:46:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-09 17:46:06,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:46:06,007 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:46:06,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-12-09 17:46:06,208 INFO L429 AbstractCegarLoop]: === Iteration 15 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:46:06,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:46:06,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1685891300, now seen corresponding path program 1 times [2020-12-09 17:46:06,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:46:06,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266442083] [2020-12-09 17:46:06,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:46:06,213 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:46:06,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892211017] [2020-12-09 17:46:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb043c42-40a2-4cf5-b88f-19508ada9464/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:46:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:06,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 17:46:06,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:46:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-09 17:46:06,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:46:06,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266442083] [2020-12-09 17:46:06,331 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:46:06,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892211017] [2020-12-09 17:46:06,331 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: cannot handle proper monomial [2020-12-09 17:46:06,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [482953768] [2020-12-09 17:46:06,333 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2020-12-09 17:46:06,334 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:46:06,334 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:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) 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) [2020-12-09 17:46:06,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:46:06,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 17:46:06,334 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 17:46:06,335 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 17:46:06,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-12-09 17:46:06,583 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 17:46:06,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:46:06 BoogieIcfgContainer [2020-12-09 17:46:06,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 17:46:06,584 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 17:46:06,584 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 17:46:06,585 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 17:46:06,585 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:45:57" (3/4) ... [2020-12-09 17:46:06,589 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 17:46:06,589 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 17:46:06,590 INFO L168 Benchmark]: Toolchain (without parser) took 9214.68 ms. Allocated memory was 92.3 MB in the beginning and 237.0 MB in the end (delta: 144.7 MB). Free memory was 56.2 MB in the beginning and 193.4 MB in the end (delta: -137.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-12-09 17:46:06,591 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 92.3 MB. Free memory was 72.3 MB in the beginning and 72.3 MB in the end (delta: 22.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:46:06,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.18 ms. Allocated memory is still 92.3 MB. Free memory was 56.0 MB in the beginning and 70.4 MB in the end (delta: -14.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-12-09 17:46:06,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.65 ms. Allocated memory is still 92.3 MB. Free memory was 70.4 MB in the beginning and 68.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:46:06,592 INFO L168 Benchmark]: Boogie Preprocessor took 17.65 ms. Allocated memory is still 92.3 MB. Free memory was 68.7 MB in the beginning and 67.7 MB in the end (delta: 986.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:46:06,593 INFO L168 Benchmark]: RCFGBuilder took 363.99 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 67.5 MB in the beginning and 90.6 MB in the end (delta: -23.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2020-12-09 17:46:06,593 INFO L168 Benchmark]: TraceAbstraction took 8630.07 ms. Allocated memory was 113.2 MB in the beginning and 237.0 MB in the end (delta: 123.7 MB). Free memory was 90.2 MB in the beginning and 193.4 MB in the end (delta: -103.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2020-12-09 17:46:06,593 INFO L168 Benchmark]: Witness Printer took 4.97 ms. Allocated memory is still 237.0 MB. Free memory is still 193.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:46:06,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 92.3 MB. Free memory was 72.3 MB in the beginning and 72.3 MB in the end (delta: 22.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 158.18 ms. Allocated memory is still 92.3 MB. Free memory was 56.0 MB in the beginning and 70.4 MB in the end (delta: -14.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.65 ms. Allocated memory is still 92.3 MB. Free memory was 70.4 MB in the beginning and 68.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.65 ms. Allocated memory is still 92.3 MB. Free memory was 68.7 MB in the beginning and 67.7 MB in the end (delta: 986.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 363.99 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 67.5 MB in the beginning and 90.6 MB in the end (delta: -23.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8630.07 ms. Allocated memory was 113.2 MB in the beginning and 237.0 MB in the end (delta: 123.7 MB). Free memory was 90.2 MB in the beginning and 193.4 MB in the end (delta: -103.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.97 ms. Allocated memory is still 237.0 MB. Free memory is still 193.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L34] int x = __VERIFIER_nondet_int(); [L35] COND FALSE !(x < 0) [L37] int y = __VERIFIER_nondet_int(); [L38] COND FALSE !(y < 0) [L40] int z = __VERIFIER_nondet_int(); [L41] int n = 0; [L41] COND TRUE n <= x [L42] int k = 0; [L42] COND TRUE k <= x [L43] COND TRUE k <= n [L30] CALL, EXPR fact(n) [L25] COND TRUE n <= 0 [L25] return 1; [L30] RET, EXPR fact(n) [L30] CALL, EXPR fact(k) [L25] COND TRUE n <= 0 [L25] return 1; [L30] RET, EXPR fact(k) [L30] EXPR n - k [L30] CALL, EXPR fact(n - k) [L25] COND TRUE n <= 0 [L25] return 1; [L30] RET, EXPR fact(n - k) [L30] EXPR fact(k) * fact(n - k) [L30] EXPR fact(n) / (fact(k) * fact(n - k)) [L30] return fact(n) / (fact(k) * fact(n - k)); [L42] k++ [L42] COND TRUE k <= x [L43] COND FALSE !(k <= n) [L30] CALL fact(n) [L25] COND FALSE !(n <= 0) [L26] EXPR n - 1 [L26] CALL, EXPR fact(n - 1) [L25] COND TRUE n <= 0 [L25] return 1; [L26] RET, EXPR fact(n - 1) [L26] n * fact(n - 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 67 locations, 20 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 8.5s, OverallIterations: 15, TraceHistogramMax: 5, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1053 SDtfs, 1704 SDslu, 3270 SDs, 0 SdLazy, 1264 SolverSat, 302 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 440 SyntacticMatches, 17 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=356occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 522 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 41802 SizeOfPredicates, 14 NumberOfNonLiveVariables, 584 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 197/204 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 881, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 55, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 60, TOOLS_POST_TIME[ms]: 113, TOOLS_POST_CALL_APPLICATIONS: 25, TOOLS_POST_CALL_TIME[ms]: 170, TOOLS_POST_RETURN_APPLICATIONS: 18, TOOLS_POST_RETURN_TIME[ms]: 64, TOOLS_QUANTIFIERELIM_APPLICATIONS: 103, TOOLS_QUANTIFIERELIM_TIME[ms]: 319, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 26, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 143, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 24, DOMAIN_JOIN_TIME[ms]: 398, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 55, DOMAIN_ISBOTTOM_TIME[ms]: 62, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 65, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 64, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 18, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 5, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 5, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 31, DAG_COMPRESSION_PROCESSED_NODES: 900, DAG_COMPRESSION_RETAINED_NODES: 152, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...