./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add_2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 499e83f84eda8d3ed438ea1340f9ee54d9540a66 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@968f2df --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:03:59,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:03:59,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:03:59,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:03:59,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:03:59,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:03:59,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:03:59,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:03:59,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:03:59,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:03:59,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:03:59,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:03:59,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:03:59,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:03:59,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:03:59,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:03:59,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:03:59,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:03:59,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:03:59,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:03:59,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:03:59,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:03:59,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:03:59,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:03:59,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:03:59,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:03:59,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:03:59,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:03:59,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:03:59,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:03:59,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:03:59,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:03:59,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:03:59,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:03:59,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:03:59,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:03:59,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:03:59,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:03:59,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:03:59,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:03:59,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:03:59,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 02:04:00,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:04:00,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:04:00,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:04:00,016 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:04:00,016 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:04:00,016 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:04:00,016 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:04:00,017 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:04:00,017 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:04:00,017 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:04:00,017 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:04:00,017 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:04:00,018 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:04:00,018 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:04:00,018 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:04:00,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:04:00,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:04:00,020 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:04:00,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:04:00,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:04:00,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:04:00,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:04:00,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:04:00,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:04:00,021 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:04:00,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:04:00,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:04:00,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:04:00,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:04:00,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:04:00,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:04:00,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:04:00,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:04:00,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:04:00,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:04:00,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:04:00,024 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:04:00,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:04:00,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:04:00,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:04:00,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:04:00,026 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_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 499e83f84eda8d3ed438ea1340f9ee54d9540a66 [2020-11-30 02:04:00,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:04:00,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:04:00,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:04:00,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:04:00,314 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:04:00,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/../../sv-benchmarks/c/bitvector/byte_add_2-1.i [2020-11-30 02:04:00,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/data/1a9557630/c74a9cc0d87843aab7114e7c96bfc571/FLAG183503fde [2020-11-30 02:04:00,878 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:04:00,879 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/sv-benchmarks/c/bitvector/byte_add_2-1.i [2020-11-30 02:04:00,886 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/data/1a9557630/c74a9cc0d87843aab7114e7c96bfc571/FLAG183503fde [2020-11-30 02:04:01,284 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/data/1a9557630/c74a9cc0d87843aab7114e7c96bfc571 [2020-11-30 02:04:01,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:04:01,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:04:01,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:04:01,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:04:01,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:04:01,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:04:01" (1/1) ... [2020-11-30 02:04:01,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c8ffab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01, skipping insertion in model container [2020-11-30 02:04:01,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:04:01" (1/1) ... [2020-11-30 02:04:01,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:04:01,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:04:01,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:04:01,629 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:04:01,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:04:01,676 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:04:01,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01 WrapperNode [2020-11-30 02:04:01,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:04:01,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:04:01,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:04:01,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:04:01,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01" (1/1) ... [2020-11-30 02:04:01,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01" (1/1) ... [2020-11-30 02:04:01,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:04:01,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:04:01,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:04:01,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:04:01,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01" (1/1) ... [2020-11-30 02:04:01,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01" (1/1) ... [2020-11-30 02:04:01,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01" (1/1) ... [2020-11-30 02:04:01,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01" (1/1) ... [2020-11-30 02:04:01,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01" (1/1) ... [2020-11-30 02:04:01,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01" (1/1) ... [2020-11-30 02:04:01,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01" (1/1) ... [2020-11-30 02:04:01,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:04:01,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:04:01,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:04:01,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:04:01,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:04:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:04:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:04:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:04:01,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:04:02,739 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:04:02,740 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 02:04:02,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:04:02 BoogieIcfgContainer [2020-11-30 02:04:02,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:04:02,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:04:02,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:04:02,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:04:02,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:04:01" (1/3) ... [2020-11-30 02:04:02,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c61071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:04:02, skipping insertion in model container [2020-11-30 02:04:02,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:01" (2/3) ... [2020-11-30 02:04:02,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c61071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:04:02, skipping insertion in model container [2020-11-30 02:04:02,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:04:02" (3/3) ... [2020-11-30 02:04:02,752 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add_2-1.i [2020-11-30 02:04:02,763 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:04:02,768 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-11-30 02:04:02,785 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-11-30 02:04:02,815 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:04:02,815 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:04:02,816 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:04:02,816 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:04:02,816 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:04:02,816 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:04:02,817 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:04:02,817 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:04:02,835 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-11-30 02:04:02,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 02:04:02,840 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:02,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 02:04:02,841 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:02,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:02,847 INFO L82 PathProgramCache]: Analyzing trace with hash 295188, now seen corresponding path program 1 times [2020-11-30 02:04:02,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:02,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679200618] [2020-11-30 02:04:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:02,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679200618] [2020-11-30 02:04:02,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:04:02,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 02:04:02,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307058180] [2020-11-30 02:04:03,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:04:03,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:03,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:04:03,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:04:03,023 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 2 states. [2020-11-30 02:04:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:03,048 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2020-11-30 02:04:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:04:03,050 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 3 [2020-11-30 02:04:03,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:03,070 INFO L225 Difference]: With dead ends: 99 [2020-11-30 02:04:03,078 INFO L226 Difference]: Without dead ends: 60 [2020-11-30 02:04:03,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:04:03,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-30 02:04:03,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-30 02:04:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-30 02:04:03,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2020-11-30 02:04:03,129 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 3 [2020-11-30 02:04:03,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:03,129 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2020-11-30 02:04:03,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:04:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2020-11-30 02:04:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:04:03,132 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:03,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:04:03,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:04:03,134 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:03,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:03,137 INFO L82 PathProgramCache]: Analyzing trace with hash -125523724, now seen corresponding path program 1 times [2020-11-30 02:04:03,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:03,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288764493] [2020-11-30 02:04:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:03,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288764493] [2020-11-30 02:04:03,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:04:03,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:04:03,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063042592] [2020-11-30 02:04:03,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:04:03,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:03,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:04:03,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:04:03,301 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 3 states. [2020-11-30 02:04:03,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:03,439 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2020-11-30 02:04:03,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:04:03,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-30 02:04:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:03,442 INFO L225 Difference]: With dead ends: 120 [2020-11-30 02:04:03,442 INFO L226 Difference]: Without dead ends: 81 [2020-11-30 02:04:03,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:04:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-30 02:04:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-11-30 02:04:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 02:04:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2020-11-30 02:04:03,459 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 12 [2020-11-30 02:04:03,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:03,460 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2020-11-30 02:04:03,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:04:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2020-11-30 02:04:03,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:04:03,472 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:03,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:04:03,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:04:03,473 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:03,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:03,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1894286807, now seen corresponding path program 1 times [2020-11-30 02:04:03,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:03,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865718544] [2020-11-30 02:04:03,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:03,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865718544] [2020-11-30 02:04:03,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068718544] [2020-11-30 02:04:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:04:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:03,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:04:03,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:04:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:03,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:04:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:03,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [518745488] [2020-11-30 02:04:03,746 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-11-30 02:04:03,746 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:04:03,751 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:04:03,757 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:04:03,759 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:04:04,017 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:04:04,328 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 02:04:04,655 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 02:04:05,026 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-11-30 02:04:05,499 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-11-30 02:04:05,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:04:05,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 4] total 11 [2020-11-30 02:04:05,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725187807] [2020-11-30 02:04:05,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:04:05,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:05,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:04:05,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:04:05,505 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 6 states. [2020-11-30 02:04:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:05,884 INFO L93 Difference]: Finished difference Result 198 states and 249 transitions. [2020-11-30 02:04:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:04:05,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-30 02:04:05,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:05,887 INFO L225 Difference]: With dead ends: 198 [2020-11-30 02:04:05,887 INFO L226 Difference]: Without dead ends: 134 [2020-11-30 02:04:05,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:04:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-30 02:04:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 88. [2020-11-30 02:04:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-30 02:04:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2020-11-30 02:04:05,900 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 15 [2020-11-30 02:04:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:05,900 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2020-11-30 02:04:05,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:04:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2020-11-30 02:04:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:04:05,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:05,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:04:06,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 02:04:06,117 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:06,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1423570021, now seen corresponding path program 1 times [2020-11-30 02:04:06,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:06,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730728761] [2020-11-30 02:04:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:06,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730728761] [2020-11-30 02:04:06,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331427124] [2020-11-30 02:04:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:04:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:06,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:04:06,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:04:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:06,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:04:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:06,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [353762892] [2020-11-30 02:04:06,371 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2020-11-30 02:04:06,371 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:04:06,372 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:04:06,372 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:04:06,372 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:04:06,510 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:04:06,825 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 02:04:07,041 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 02:04:07,242 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 02:04:08,692 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-11-30 02:04:09,103 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-30 02:04:09,423 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2020-11-30 02:04:09,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:04:09,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 13 [2020-11-30 02:04:09,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851882826] [2020-11-30 02:04:09,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:04:09,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:09,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:04:09,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:04:09,427 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 8 states. [2020-11-30 02:04:09,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:09,826 INFO L93 Difference]: Finished difference Result 255 states and 317 transitions. [2020-11-30 02:04:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:04:09,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-11-30 02:04:09,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:09,831 INFO L225 Difference]: With dead ends: 255 [2020-11-30 02:04:09,831 INFO L226 Difference]: Without dead ends: 191 [2020-11-30 02:04:09,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:04:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-30 02:04:09,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 88. [2020-11-30 02:04:09,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-30 02:04:09,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2020-11-30 02:04:09,842 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 18 [2020-11-30 02:04:09,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:09,842 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2020-11-30 02:04:09,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:04:09,842 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2020-11-30 02:04:09,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 02:04:09,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:09,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:04:10,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:04:10,052 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:10,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1235076964, now seen corresponding path program 1 times [2020-11-30 02:04:10,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:10,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117408978] [2020-11-30 02:04:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:10,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117408978] [2020-11-30 02:04:10,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379075149] [2020-11-30 02:04:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:04:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:10,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:04:10,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:04:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:10,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:04:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:10,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1336916429] [2020-11-30 02:04:10,252 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2020-11-30 02:04:10,252 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:04:10,253 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:04:10,253 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:04:10,253 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:04:10,454 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:04:10,683 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 02:04:10,895 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 02:04:11,185 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 02:04:11,406 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-11-30 02:04:11,715 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 02:04:12,334 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 02:04:12,765 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 02:04:13,272 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2020-11-30 02:04:13,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:04:13,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 16 [2020-11-30 02:04:13,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914281744] [2020-11-30 02:04:13,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:04:13,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:13,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:04:13,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:04:13,275 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 10 states. [2020-11-30 02:04:14,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:14,116 INFO L93 Difference]: Finished difference Result 312 states and 385 transitions. [2020-11-30 02:04:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 02:04:14,117 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-11-30 02:04:14,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:14,119 INFO L225 Difference]: With dead ends: 312 [2020-11-30 02:04:14,119 INFO L226 Difference]: Without dead ends: 248 [2020-11-30 02:04:14,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:04:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-11-30 02:04:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 88. [2020-11-30 02:04:14,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-30 02:04:14,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2020-11-30 02:04:14,135 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 21 [2020-11-30 02:04:14,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:14,135 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2020-11-30 02:04:14,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:04:14,136 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2020-11-30 02:04:14,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 02:04:14,137 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:14,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:04:14,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:04:14,356 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:14,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:14,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1110998152, now seen corresponding path program 1 times [2020-11-30 02:04:14,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:14,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703773934] [2020-11-30 02:04:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:14,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703773934] [2020-11-30 02:04:14,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648580652] [2020-11-30 02:04:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:04:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:14,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:04:14,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:04:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:14,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:04:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:14,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2027099324] [2020-11-30 02:04:14,554 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2020-11-30 02:04:14,554 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:04:14,554 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:04:14,555 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:04:14,555 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:04:14,707 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:04:14,968 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 02:04:15,169 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 02:04:15,413 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 02:04:15,678 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-11-30 02:04:15,915 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 02:04:16,195 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-11-30 02:04:16,456 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-11-30 02:04:16,741 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-30 02:04:17,077 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2020-11-30 02:04:17,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:04:17,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4, 4] total 16 [2020-11-30 02:04:17,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109722624] [2020-11-30 02:04:17,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 02:04:17,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:17,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 02:04:17,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:04:17,079 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 11 states. [2020-11-30 02:04:17,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:17,911 INFO L93 Difference]: Finished difference Result 303 states and 370 transitions. [2020-11-30 02:04:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 02:04:17,911 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-11-30 02:04:17,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:17,913 INFO L225 Difference]: With dead ends: 303 [2020-11-30 02:04:17,913 INFO L226 Difference]: Without dead ends: 239 [2020-11-30 02:04:17,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:04:17,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-11-30 02:04:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 67. [2020-11-30 02:04:17,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-30 02:04:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2020-11-30 02:04:17,921 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 23 [2020-11-30 02:04:17,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:17,921 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2020-11-30 02:04:17,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 02:04:17,921 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2020-11-30 02:04:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 02:04:17,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:17,923 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 02:04:18,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:04:18,124 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:18,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1137095238, now seen corresponding path program 1 times [2020-11-30 02:04:18,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:18,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113149406] [2020-11-30 02:04:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:18,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113149406] [2020-11-30 02:04:18,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051139678] [2020-11-30 02:04:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/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 [2020-11-30 02:04:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:18,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 02:04:18,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:04:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:18,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:04:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:18,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:04:18,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 8 [2020-11-30 02:04:18,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538290171] [2020-11-30 02:04:18,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:04:18,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:18,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:04:18,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:04:18,453 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand 6 states. [2020-11-30 02:04:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:18,755 INFO L93 Difference]: Finished difference Result 170 states and 239 transitions. [2020-11-30 02:04:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:04:18,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-30 02:04:18,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:18,757 INFO L225 Difference]: With dead ends: 170 [2020-11-30 02:04:18,757 INFO L226 Difference]: Without dead ends: 131 [2020-11-30 02:04:18,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:04:18,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-30 02:04:18,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 122. [2020-11-30 02:04:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-30 02:04:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 160 transitions. [2020-11-30 02:04:18,768 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 160 transitions. Word has length 30 [2020-11-30 02:04:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:18,775 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 160 transitions. [2020-11-30 02:04:18,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:04:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 160 transitions. [2020-11-30 02:04:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 02:04:18,777 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:18,777 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, 1, 1, 1] [2020-11-30 02:04:18,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-30 02:04:18,978 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:18,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1765665883, now seen corresponding path program 1 times [2020-11-30 02:04:18,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:18,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326905739] [2020-11-30 02:04:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 02:04:19,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326905739] [2020-11-30 02:04:19,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:04:19,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:04:19,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247276198] [2020-11-30 02:04:19,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:04:19,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:19,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:04:19,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:04:19,111 INFO L87 Difference]: Start difference. First operand 122 states and 160 transitions. Second operand 5 states. [2020-11-30 02:04:19,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:19,315 INFO L93 Difference]: Finished difference Result 154 states and 198 transitions. [2020-11-30 02:04:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:04:19,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-30 02:04:19,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:19,317 INFO L225 Difference]: With dead ends: 154 [2020-11-30 02:04:19,317 INFO L226 Difference]: Without dead ends: 132 [2020-11-30 02:04:19,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:04:19,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-30 02:04:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 113. [2020-11-30 02:04:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-30 02:04:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2020-11-30 02:04:19,328 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 39 [2020-11-30 02:04:19,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:19,329 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2020-11-30 02:04:19,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:04:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2020-11-30 02:04:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-30 02:04:19,331 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:19,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-11-30 02:04:19,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-30 02:04:19,331 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:19,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1102015556, now seen corresponding path program 1 times [2020-11-30 02:04:19,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:19,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650106752] [2020-11-30 02:04:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 35 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:04:19,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650106752] [2020-11-30 02:04:19,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607478164] [2020-11-30 02:04:19,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/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 [2020-11-30 02:04:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:19,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-30 02:04:19,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:04:20,926 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-11-30 02:04:21,590 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 81 [2020-11-30 02:04:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:21,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:04:24,902 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 35 [2020-11-30 02:04:29,536 WARN L193 SmtUtils]: Spent 4.35 s on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-11-30 02:04:29,966 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-11-30 02:04:32,372 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2020-11-30 02:04:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:37,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [808367442] [2020-11-30 02:04:37,514 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2020-11-30 02:04:37,514 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:04:37,514 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:04:37,515 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:04:37,515 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:04:38,778 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:04:39,335 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-11-30 02:04:39,816 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 02:04:40,213 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 02:04:40,643 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-11-30 02:04:41,348 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-11-30 02:04:41,662 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-11-30 02:04:41,918 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-11-30 02:04:42,211 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-11-30 02:04:43,544 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-30 02:04:44,556 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-11-30 02:04:45,393 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-11-30 02:04:45,710 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-11-30 02:04:46,074 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-11-30 02:04:46,921 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:04:46,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:04:46,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 16] total 36 [2020-11-30 02:04:46,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918562595] [2020-11-30 02:04:46,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-30 02:04:46,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:46,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-30 02:04:46,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=2077, Unknown=2, NotChecked=0, Total=2450 [2020-11-30 02:04:46,924 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand 36 states. [2020-11-30 02:04:47,440 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-11-30 02:04:50,014 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-11-30 02:04:50,402 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-11-30 02:04:53,555 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-11-30 02:04:53,925 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-11-30 02:04:54,422 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-11-30 02:04:54,989 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-11-30 02:04:55,241 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-11-30 02:05:00,227 WARN L193 SmtUtils]: Spent 4.53 s on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2020-11-30 02:05:00,538 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2020-11-30 02:05:01,034 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2020-11-30 02:05:01,328 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2020-11-30 02:05:01,584 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2020-11-30 02:05:02,040 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2020-11-30 02:05:02,329 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-11-30 02:05:02,708 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-11-30 02:05:03,001 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-11-30 02:05:03,372 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-11-30 02:05:03,635 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 27 [2020-11-30 02:05:04,839 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-11-30 02:05:05,495 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-11-30 02:05:05,934 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2020-11-30 02:05:06,762 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-11-30 02:05:07,535 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-11-30 02:05:07,841 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-11-30 02:05:08,204 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-11-30 02:05:09,123 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-11-30 02:05:09,447 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-11-30 02:05:10,407 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 58 [2020-11-30 02:05:11,058 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2020-11-30 02:05:11,359 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-11-30 02:05:11,644 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-11-30 02:05:12,066 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2020-11-30 02:05:14,634 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-11-30 02:05:21,338 WARN L193 SmtUtils]: Spent 6.52 s on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2020-11-30 02:05:21,901 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-11-30 02:05:22,204 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-11-30 02:05:22,547 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-11-30 02:05:25,097 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-11-30 02:05:25,543 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-11-30 02:05:25,861 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-11-30 02:05:26,142 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-11-30 02:05:26,564 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 44 [2020-11-30 02:05:27,035 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2020-11-30 02:05:27,458 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-11-30 02:05:28,428 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-11-30 02:05:28,890 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-11-30 02:05:31,836 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-11-30 02:05:32,248 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-11-30 02:05:32,702 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-11-30 02:05:34,104 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-11-30 02:05:37,075 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 63 DAG size of output: 27 [2020-11-30 02:05:37,909 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2020-11-30 02:05:40,677 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2020-11-30 02:05:43,108 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-11-30 02:05:43,833 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2020-11-30 02:05:44,217 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2020-11-30 02:05:44,852 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-11-30 02:05:45,742 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2020-11-30 02:05:46,021 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2020-11-30 02:05:46,554 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2020-11-30 02:05:51,204 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-30 02:05:51,850 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-11-30 02:05:52,406 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 34 [2020-11-30 02:05:52,648 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2020-11-30 02:05:53,068 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2020-11-30 02:05:53,358 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2020-11-30 02:05:53,816 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-11-30 02:05:57,245 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-11-30 02:05:57,607 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2020-11-30 02:05:58,008 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 37 [2020-11-30 02:05:58,495 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-11-30 02:05:59,064 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-11-30 02:05:59,843 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2020-11-30 02:06:02,681 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-11-30 02:06:05,645 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-11-30 02:06:08,220 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-11-30 02:06:13,090 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-11-30 02:06:13,559 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2020-11-30 02:06:14,082 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-11-30 02:06:14,471 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2020-11-30 02:06:14,965 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2020-11-30 02:06:15,273 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2020-11-30 02:06:15,720 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-11-30 02:06:16,071 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2020-11-30 02:06:19,749 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-11-30 02:06:22,484 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-11-30 02:06:22,731 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-11-30 02:06:23,233 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-11-30 02:06:24,771 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-11-30 02:06:25,104 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-11-30 02:06:33,731 WARN L193 SmtUtils]: Spent 8.52 s on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-11-30 02:06:34,213 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2020-11-30 02:06:35,079 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-11-30 02:06:35,783 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-11-30 02:06:36,642 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-11-30 02:06:37,016 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2020-11-30 02:06:39,809 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-11-30 02:06:40,597 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 38 [2020-11-30 02:06:41,423 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2020-11-30 02:06:43,956 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-11-30 02:06:44,904 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-11-30 02:06:45,306 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-11-30 02:06:46,173 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-11-30 02:06:46,571 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-11-30 02:06:46,854 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 25 [2020-11-30 02:06:47,162 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2020-11-30 02:06:49,643 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-11-30 02:06:49,972 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-11-30 02:06:50,617 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-11-30 02:06:50,867 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2020-11-30 02:06:51,558 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-11-30 02:06:51,810 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-11-30 02:06:52,999 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2020-11-30 02:06:53,294 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-11-30 02:06:53,526 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-11-30 02:06:54,038 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-11-30 02:06:55,104 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-11-30 02:06:55,830 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-11-30 02:06:58,750 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-11-30 02:07:00,136 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-11-30 02:07:00,448 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-11-30 02:07:01,242 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-11-30 02:07:04,015 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-11-30 02:07:04,696 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-11-30 02:07:04,950 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2020-11-30 02:07:05,557 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 29 [2020-11-30 02:07:05,826 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-11-30 02:07:06,628 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-11-30 02:07:07,161 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-11-30 02:07:07,473 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2020-11-30 02:07:08,310 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 25 [2020-11-30 02:07:08,888 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-11-30 02:07:09,499 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 62 [2020-11-30 02:07:09,882 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-11-30 02:07:10,242 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-11-30 02:07:10,607 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-11-30 02:07:13,626 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2020-11-30 02:07:16,395 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2020-11-30 02:07:18,651 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-11-30 02:07:19,496 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-11-30 02:07:19,864 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-11-30 02:07:20,663 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-11-30 02:07:20,905 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-11-30 02:07:21,698 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-11-30 02:07:24,517 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-11-30 02:07:25,145 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-11-30 02:07:27,905 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-11-30 02:07:28,409 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-11-30 02:07:29,290 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-11-30 02:07:29,601 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-11-30 02:07:30,010 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-11-30 02:07:32,940 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-11-30 02:07:33,373 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-11-30 02:07:33,676 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-11-30 02:07:36,692 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 68 DAG size of output: 33 [2020-11-30 02:07:37,159 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2020-11-30 02:07:37,774 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-11-30 02:07:38,113 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-30 02:07:38,777 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 66 [2020-11-30 02:07:41,058 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-11-30 02:07:41,919 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2020-11-30 02:07:42,405 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-11-30 02:07:43,022 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 64 [2020-11-30 02:07:43,694 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-11-30 02:07:44,419 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2020-11-30 02:07:44,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:07:44,421 INFO L93 Difference]: Finished difference Result 1126 states and 1509 transitions. [2020-11-30 02:07:44,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2020-11-30 02:07:44,421 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 48 [2020-11-30 02:07:44,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:07:44,428 INFO L225 Difference]: With dead ends: 1126 [2020-11-30 02:07:44,428 INFO L226 Difference]: Without dead ends: 1009 [2020-11-30 02:07:44,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 188 SyntacticMatches, 18 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43479 ImplicationChecksByTransitivity, 172.1s TimeCoverageRelationStatistics Valid=13537, Invalid=92407, Unknown=6, NotChecked=0, Total=105950 [2020-11-30 02:07:44,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-11-30 02:07:44,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 344. [2020-11-30 02:07:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-11-30 02:07:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 463 transitions. [2020-11-30 02:07:44,507 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 463 transitions. Word has length 48 [2020-11-30 02:07:44,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:07:44,508 INFO L481 AbstractCegarLoop]: Abstraction has 344 states and 463 transitions. [2020-11-30 02:07:44,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-30 02:07:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 463 transitions. [2020-11-30 02:07:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-30 02:07:44,510 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:07:44,511 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 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] [2020-11-30 02:07:44,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-30 02:07:44,736 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:07:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:07:44,737 INFO L82 PathProgramCache]: Analyzing trace with hash -41705072, now seen corresponding path program 1 times [2020-11-30 02:07:44,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:07:44,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132429316] [2020-11-30 02:07:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:07:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:07:45,018 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 02:07:45,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132429316] [2020-11-30 02:07:45,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480251955] [2020-11-30 02:07:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/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 [2020-11-30 02:07:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:07:45,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 02:07:45,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:07:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 02:07:46,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:07:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 23 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 02:07:46,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1565867804] [2020-11-30 02:07:46,925 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2020-11-30 02:07:46,926 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:07:46,926 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:07:46,926 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:07:46,926 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:07:48,468 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:07:49,063 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-11-30 02:07:49,585 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 02:07:50,201 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 02:07:50,839 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-11-30 02:07:51,190 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-11-30 02:07:51,520 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-11-30 02:07:52,003 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-11-30 02:07:52,417 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-11-30 02:07:52,881 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-11-30 02:07:54,177 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-30 02:07:55,391 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-11-30 02:07:56,202 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-11-30 02:07:56,680 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-11-30 02:07:58,593 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-11-30 02:07:59,360 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:07:59,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:07:59,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 13 [2020-11-30 02:07:59,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190306404] [2020-11-30 02:07:59,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 02:07:59,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:07:59,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 02:07:59,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-11-30 02:07:59,362 INFO L87 Difference]: Start difference. First operand 344 states and 463 transitions. Second operand 13 states. [2020-11-30 02:08:08,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:08:08,830 INFO L93 Difference]: Finished difference Result 1604 states and 2185 transitions. [2020-11-30 02:08:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-30 02:08:08,833 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-11-30 02:08:08,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:08:08,841 INFO L225 Difference]: With dead ends: 1604 [2020-11-30 02:08:08,841 INFO L226 Difference]: Without dead ends: 1261 [2020-11-30 02:08:08,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 156 SyntacticMatches, 21 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=465, Invalid=2505, Unknown=0, NotChecked=0, Total=2970 [2020-11-30 02:08:08,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2020-11-30 02:08:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 790. [2020-11-30 02:08:08,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2020-11-30 02:08:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1028 transitions. [2020-11-30 02:08:08,909 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1028 transitions. Word has length 60 [2020-11-30 02:08:08,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:08:08,909 INFO L481 AbstractCegarLoop]: Abstraction has 790 states and 1028 transitions. [2020-11-30 02:08:08,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 02:08:08,910 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1028 transitions. [2020-11-30 02:08:08,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-30 02:08:08,911 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:08:08,912 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 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, 1, 1, 1] [2020-11-30 02:08:09,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-11-30 02:08:09,131 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:08:09,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:08:09,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1864217748, now seen corresponding path program 1 times [2020-11-30 02:08:09,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:08:09,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316448465] [2020-11-30 02:08:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:08:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:08:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-30 02:08:09,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316448465] [2020-11-30 02:08:09,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793607974] [2020-11-30 02:08:09,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/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 [2020-11-30 02:08:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:08:09,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:08:09,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:08:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 02:08:09,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:08:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 02:08:10,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [78482818] [2020-11-30 02:08:10,254 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2020-11-30 02:08:10,254 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:08:10,255 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:08:10,255 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:08:10,255 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:08:11,896 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-11-30 02:08:12,129 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:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 02:08:12,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:08:12,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2020-11-30 02:08:12,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956183547] [2020-11-30 02:08:12,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-30 02:08:12,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:08:12,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 02:08:12,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-30 02:08:12,136 INFO L87 Difference]: Start difference. First operand 790 states and 1028 transitions. Second operand 14 states. [2020-11-30 02:08:15,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:08:15,094 INFO L93 Difference]: Finished difference Result 1785 states and 2356 transitions. [2020-11-30 02:08:15,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-30 02:08:15,097 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-11-30 02:08:15,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:08:15,101 INFO L225 Difference]: With dead ends: 1785 [2020-11-30 02:08:15,102 INFO L226 Difference]: Without dead ends: 804 [2020-11-30 02:08:15,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=280, Invalid=712, Unknown=0, NotChecked=0, Total=992 [2020-11-30 02:08:15,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-11-30 02:08:15,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 463. [2020-11-30 02:08:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-11-30 02:08:15,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 559 transitions. [2020-11-30 02:08:15,140 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 559 transitions. Word has length 63 [2020-11-30 02:08:15,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:08:15,140 INFO L481 AbstractCegarLoop]: Abstraction has 463 states and 559 transitions. [2020-11-30 02:08:15,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-30 02:08:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 559 transitions. [2020-11-30 02:08:15,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-30 02:08:15,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:08:15,143 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:08:15,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2020-11-30 02:08:15,364 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:08:15,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:08:15,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1366290542, now seen corresponding path program 1 times [2020-11-30 02:08:15,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:08:15,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177385441] [2020-11-30 02:08:15,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:08:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:08:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-30 02:08:15,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177385441] [2020-11-30 02:08:15,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952939070] [2020-11-30 02:08:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:08:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:08:15,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 02:08:15,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:08:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-30 02:08:16,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:08:31,317 WARN L193 SmtUtils]: Spent 6.31 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-30 02:08:33,405 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_ULTIMATE.start_mp_add_~b3~0 256)) (.cse1 (mod c_ULTIMATE.start_mp_add_~partial_sum~0 65536))) (or (< 255 (mod (+ .cse0 .cse1) 65536)) (<= (div (+ (* .cse0 16777216) (* .cse1 16777216) (- 2147483648)) 4294967296) (div (+ .cse0 .cse1 (- 256)) 256)))) is different from true [2020-11-30 02:08:35,521 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_ULTIMATE.start_mp_add_~carry~0 65536)) (.cse0 (mod c_ULTIMATE.start_mp_add_~b3~0 256))) (or (< 255 (mod (+ .cse0 .cse1) 65536)) (<= (div (+ (* .cse1 16777216) (* .cse0 16777216) (- 2147483648)) 4294967296) (div (+ .cse1 .cse0 (- 256)) 256)))) is different from true [2020-11-30 02:08:44,700 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-30 02:09:07,005 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((aux_div_aux_mod_v_ULTIMATE.start_mp_add_~carry~0_75_47_58 Int) (aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_mp_add_~carry~0_75_47_58_111_239 Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_mp_add_~carry~0_75_47_58_111 Int) (aux_div_aux_div_v_ULTIMATE.start_mp_add_~carry~0_75_47_155 Int) (aux_div_aux_mod_aux_div_v_ULTIMATE.start_mp_add_~carry~0_75_47_155_227 Int)) (let ((.cse9 (mod c_ULTIMATE.start_mp_add_~b3~0 256))) (let ((.cse3 (* 256 aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_mp_add_~carry~0_75_47_58_111_239)) (.cse6 (* 1099494850560 .cse9)) (.cse7 (* 4294967296 aux_div_aux_div_v_ULTIMATE.start_mp_add_~carry~0_75_47_155)) (.cse8 (* 1099511627776 aux_div_aux_mod_aux_div_v_ULTIMATE.start_mp_add_~carry~0_75_47_155_227)) (.cse0 (* 65536 .cse9)) (.cse2 (* 65536 aux_div_aux_mod_v_ULTIMATE.start_mp_add_~carry~0_75_47_58)) (.cse5 (* 65536 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_mp_add_~carry~0_75_47_58_111)) (.cse4 (* 65535 .cse9)) (.cse1 (* 65536 aux_div_aux_mod_aux_div_v_ULTIMATE.start_mp_add_~carry~0_75_47_155_227))) (or (<= aux_div_aux_div_v_ULTIMATE.start_mp_add_~carry~0_75_47_155 aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_mp_add_~carry~0_75_47_58_111_239) (<= (+ .cse0 .cse1 65535) 0) (< 1 (+ .cse2 .cse0 .cse1)) (<= (+ .cse3 .cse4 .cse1 511) 0) (< (+ .cse2 .cse5 .cse4 .cse1 254) 0) (< 0 (+ .cse6 .cse7 .cse8 2130706432)) (< 0 (+ .cse3 .cse4 .cse1 255)) (<= (+ .cse2 .cse0 .cse1 65535) 0) (<= (+ .cse2 .cse5 .cse4 .cse1 65535) 0) (<= (+ .cse6 .cse7 .cse8 6425673728) 0) (< 1 (+ .cse0 .cse1)) (< 1 (+ .cse2 .cse5 .cse4 .cse1)))))) (forall ((v_prenex_22 Int) (aux_div_aux_div_v_ULTIMATE.start_mp_add_~carry~0_75_47_199 Int) (v_prenex_21 Int) (v_prenex_20 Int) (aux_div_aux_mod_aux_div_v_ULTIMATE.start_mp_add_~carry~0_75_47_199_276 Int)) (let ((.cse21 (mod c_ULTIMATE.start_mp_add_~b3~0 256))) (let ((.cse20 (* 256 v_prenex_21)) (.cse11 (* 65536 .cse21)) (.cse16 (* 1099494850560 c_ULTIMATE.start_mp_add_~carry~0)) (.cse17 (* 1099494850560 .cse21)) (.cse18 (* 4294967296 aux_div_aux_div_v_ULTIMATE.start_mp_add_~carry~0_75_47_199)) (.cse19 (* 1099511627776 aux_div_aux_mod_aux_div_v_ULTIMATE.start_mp_add_~carry~0_75_47_199_276)) (.cse13 (* 65536 v_prenex_22)) (.cse10 (* 65535 c_ULTIMATE.start_mp_add_~carry~0)) (.cse14 (* 65535 .cse21)) (.cse15 (* 65536 v_prenex_20)) (.cse12 (* 65536 aux_div_aux_mod_aux_div_v_ULTIMATE.start_mp_add_~carry~0_75_47_199_276))) (or (<= (+ .cse10 .cse11 .cse12 65536) 0) (< (+ .cse13 .cse10 .cse14 .cse15 .cse12 255) 0) (< 0 (+ .cse10 .cse11 .cse15 .cse12)) (<= (+ .cse16 .cse17 .cse18 .cse19 6442450944) 0) (<= (+ .cse10 .cse14 .cse20 .cse12 512) 0) (< 0 (+ .cse10 .cse14 .cse20 .cse12 256)) (< 0 (+ .cse10 .cse11 .cse12)) (<= aux_div_aux_div_v_ULTIMATE.start_mp_add_~carry~0_75_47_199 v_prenex_21) (< 0 (+ .cse10 .cse13 .cse14 .cse15 .cse12)) (<= (+ .cse10 .cse11 .cse15 .cse12 65536) 0) (< 0 (+ .cse16 .cse17 .cse18 .cse19 2147483648)) (<= (+ .cse13 .cse10 .cse14 .cse15 .cse12 65536) 0)))))) is different from true [2020-11-30 02:09:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 36 not checked. [2020-11-30 02:09:10,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1040758238] [2020-11-30 02:09:10,695 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2020-11-30 02:09:10,695 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:09:10,696 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:09:10,696 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:09:10,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:09:12,190 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:09:12,868 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-11-30 02:09:13,489 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 02:09:16,177 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 02:09:20,997 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 02:09:25,735 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-11-30 02:09:26,405 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-30 02:09:30,934 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-11-30 02:09:33,349 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-11-30 02:09:33,833 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-11-30 02:09:34,335 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-11-30 02:09:34,881 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-11-30 02:09:38,223 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-11-30 02:09:41,411 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-11-30 02:09:44,218 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-11-30 02:09:45,058 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-30 02:09:45,747 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-11-30 02:09:48,334 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-11-30 02:09:48,808 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-11-30 02:09:49,420 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-11-30 02:09:52,012 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-11-30 02:09:52,786 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-30 02:09:53,962 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:09:53,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:09:53,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 9] total 22 [2020-11-30 02:09:53,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955090722] [2020-11-30 02:09:53,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-30 02:09:53,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:09:53,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-30 02:09:53,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1405, Unknown=22, NotChecked=240, Total=1892 [2020-11-30 02:09:53,964 INFO L87 Difference]: Start difference. First operand 463 states and 559 transitions. Second operand 23 states. [2020-11-30 02:10:24,838 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 27 [2020-11-30 02:10:25,392 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-11-30 02:10:27,604 WARN L860 $PredicateComparison]: unable to prove that (and (<= 13 c_ULTIMATE.start_mp_add_~r3~0) (let ((.cse1 (mod c_ULTIMATE.start_mp_add_~carry~0 65536)) (.cse0 (mod c_ULTIMATE.start_mp_add_~b3~0 256))) (or (< 255 (mod (+ .cse0 .cse1) 65536)) (<= (div (+ (* .cse1 16777216) (* .cse0 16777216) (- 2147483648)) 4294967296) (div (+ .cse1 .cse0 (- 256)) 256)))) (let ((.cse2 (* c_ULTIMATE.start_mp_add_~r3~0 65535))) (or (= (mod (+ .cse2 13) 65536) 0) (= (mod (+ .cse2 14) 65536) 0))) (= c_ULTIMATE.start_mp_add_~carry~0 0) (< c_ULTIMATE.start_mp_add_~r3~0 65549) (<= (+ (* 256 (div c_ULTIMATE.start_mp_add_~i~0 256)) 3) c_ULTIMATE.start_mp_add_~i~0) (= c_ULTIMATE.start_mp_add_~b3~0 13)) is different from true [2020-11-30 02:10:33,698 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-11-30 02:10:34,748 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2020-11-30 02:10:46,039 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-11-30 02:10:46,695 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 42 [2020-11-30 02:10:53,744 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2020-11-30 02:10:54,422 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 23 [2020-11-30 02:11:01,475 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-11-30 02:11:04,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:11:04,190 INFO L93 Difference]: Finished difference Result 1596 states and 1919 transitions. [2020-11-30 02:11:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-30 02:11:04,194 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 69 [2020-11-30 02:11:04,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:11:04,199 INFO L225 Difference]: With dead ends: 1596 [2020-11-30 02:11:04,199 INFO L226 Difference]: Without dead ends: 879 [2020-11-30 02:11:04,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 162 SyntacticMatches, 38 SemanticMatches, 84 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3258 ImplicationChecksByTransitivity, 122.9s TimeCoverageRelationStatistics Valid=919, Invalid=5710, Unknown=29, NotChecked=652, Total=7310 [2020-11-30 02:11:04,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-11-30 02:11:04,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 606. [2020-11-30 02:11:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-11-30 02:11:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 731 transitions. [2020-11-30 02:11:04,246 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 731 transitions. Word has length 69 [2020-11-30 02:11:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:11:04,246 INFO L481 AbstractCegarLoop]: Abstraction has 606 states and 731 transitions. [2020-11-30 02:11:04,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-30 02:11:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 731 transitions. [2020-11-30 02:11:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-30 02:11:04,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:11:04,248 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:11:04,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:11:04,476 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:11:04,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:11:04,477 INFO L82 PathProgramCache]: Analyzing trace with hash 2067762747, now seen corresponding path program 1 times [2020-11-30 02:11:04,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:11:04,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240183064] [2020-11-30 02:11:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:11:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:11:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-30 02:11:04,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240183064] [2020-11-30 02:11:04,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449478659] [2020-11-30 02:11:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed8ce171-ec8e-4b77-a1a0-29bbac9f2321/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:11:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:11:04,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 02:11:04,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:11:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-30 02:11:13,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:11:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 62 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-30 02:11:14,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1105083592] [2020-11-30 02:11:14,629 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2020-11-30 02:11:14,629 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:11:14,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:11:14,630 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:11:14,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:11:16,207 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:11:54,368 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-30 02:11:54,369 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:116) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 37 more [2020-11-30 02:11:54,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:11:54,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 9] total 19 [2020-11-30 02:11:54,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333621123] [2020-11-30 02:11:54,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-30 02:11:54,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:11:54,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-30 02:11:54,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=290, Unknown=2, NotChecked=0, Total=380 [2020-11-30 02:11:54,373 INFO L87 Difference]: Start difference. First operand 606 states and 731 transitions. Second operand 20 states. [2020-11-30 02:11:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:11:54,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:11:54,574 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@968f2df at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 02:11:54,576 INFO L168 Benchmark]: Toolchain (without parser) took 473288.51 ms. Allocated memory was 107.0 MB in the beginning and 283.1 MB in the end (delta: 176.2 MB). Free memory was 80.3 MB in the beginning and 148.8 MB in the end (delta: -68.4 MB). Peak memory consumption was 107.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:54,576 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory is still 63.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:11:54,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.65 ms. Allocated memory is still 107.0 MB. Free memory was 80.1 MB in the beginning and 81.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:54,577 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.32 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 79.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:54,577 INFO L168 Benchmark]: Boogie Preprocessor took 56.29 ms. Allocated memory is still 107.0 MB. Free memory was 79.3 MB in the beginning and 77.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:54,577 INFO L168 Benchmark]: RCFGBuilder took 934.52 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 77.8 MB in the beginning and 97.3 MB in the end (delta: -19.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:54,578 INFO L168 Benchmark]: TraceAbstraction took 471831.16 ms. Allocated memory was 134.2 MB in the beginning and 283.1 MB in the end (delta: 148.9 MB). Free memory was 96.8 MB in the beginning and 148.8 MB in the end (delta: -51.9 MB). Peak memory consumption was 100.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:54,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory is still 63.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 392.65 ms. Allocated memory is still 107.0 MB. Free memory was 80.1 MB in the beginning and 81.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.32 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 79.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.29 ms. Allocated memory is still 107.0 MB. Free memory was 79.3 MB in the beginning and 77.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 934.52 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 77.8 MB in the beginning and 97.3 MB in the end (delta: -19.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 471831.16 ms. Allocated memory was 134.2 MB in the beginning and 283.1 MB in the end (delta: 148.9 MB). Free memory was 96.8 MB in the beginning and 148.8 MB in the end (delta: -51.9 MB). Peak memory consumption was 100.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@968f2df de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@968f2df: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...