./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add_1-2.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_3433b408-cba2-4ce8-b7bb-053ccfb35586/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/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 ae0b445eba18f91587d7dc0f5adde2c3f4731247 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/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: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:05:59,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:05:59,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:06:00,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:06:00,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:06:00,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:06:00,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:06:00,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:06:00,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:06:00,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:06:00,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:06:00,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:06:00,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:06:00,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:06:00,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:06:00,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:06:00,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:06:00,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:06:00,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:06:00,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:06:00,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:06:00,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:06:00,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:06:00,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:06:00,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:06:00,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:06:00,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:06:00,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:06:00,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:06:00,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:06:00,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:06:00,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:06:00,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:06:00,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:06:00,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:06:00,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:06:00,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:06:00,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:06:00,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:06:00,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:06:00,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:06:00,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 02:06:00,123 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:06:00,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:06:00,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:06:00,124 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:06:00,125 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:06:00,125 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:06:00,125 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:06:00,125 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:06:00,126 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:06:00,126 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:06:00,126 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:06:00,126 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:06:00,127 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:06:00,127 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:06:00,127 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:06:00,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:06:00,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:06:00,129 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:06:00,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:06:00,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:06:00,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:06:00,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:06:00,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:06:00,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:06:00,130 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:06:00,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:06:00,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:06:00,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:06:00,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:06:00,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:06:00,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:06:00,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:06:00,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:06:00,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:06:00,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:06:00,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:06:00,134 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:06:00,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:06:00,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:06:00,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:06:00,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:06:00,135 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_3433b408-cba2-4ce8-b7bb-053ccfb35586/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae0b445eba18f91587d7dc0f5adde2c3f4731247 [2020-11-30 02:06:00,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:06:00,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:06:00,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:06:00,446 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:06:00,447 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:06:00,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/bin/utaipan/../../sv-benchmarks/c/bitvector/byte_add_1-2.i [2020-11-30 02:06:00,536 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/bin/utaipan/data/18e8abc90/c9a6567773734eaa8cb591cb17443435/FLAG47679990d [2020-11-30 02:06:01,181 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:06:01,182 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/sv-benchmarks/c/bitvector/byte_add_1-2.i [2020-11-30 02:06:01,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/bin/utaipan/data/18e8abc90/c9a6567773734eaa8cb591cb17443435/FLAG47679990d [2020-11-30 02:06:01,522 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/bin/utaipan/data/18e8abc90/c9a6567773734eaa8cb591cb17443435 [2020-11-30 02:06:01,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:06:01,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:06:01,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:06:01,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:06:01,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:06:01,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:06:01" (1/1) ... [2020-11-30 02:06:01,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e50bcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01, skipping insertion in model container [2020-11-30 02:06:01,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:06:01" (1/1) ... [2020-11-30 02:06:01,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:06:01,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:06:01,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:06:01,855 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:06:01,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:06:01,919 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:06:01,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01 WrapperNode [2020-11-30 02:06:01,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:06:01,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:06:01,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:06:01,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:06:01,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01" (1/1) ... [2020-11-30 02:06:01,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01" (1/1) ... [2020-11-30 02:06:01,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:06:01,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:06:01,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:06:01,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:06:01,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01" (1/1) ... [2020-11-30 02:06:01,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01" (1/1) ... [2020-11-30 02:06:01,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01" (1/1) ... [2020-11-30 02:06:01,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01" (1/1) ... [2020-11-30 02:06:01,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01" (1/1) ... [2020-11-30 02:06:02,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01" (1/1) ... [2020-11-30 02:06:02,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01" (1/1) ... [2020-11-30 02:06:02,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:06:02,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:06:02,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:06:02,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:06:02,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/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 02:06:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:06:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:06:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:06:02,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:06:03,000 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:06:03,000 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 02:06:03,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:06:03 BoogieIcfgContainer [2020-11-30 02:06:03,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:06:03,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:06:03,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:06:03,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:06:03,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:06:01" (1/3) ... [2020-11-30 02:06:03,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764ef9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:06:03, skipping insertion in model container [2020-11-30 02:06:03,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:01" (2/3) ... [2020-11-30 02:06:03,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764ef9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:06:03, skipping insertion in model container [2020-11-30 02:06:03,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:06:03" (3/3) ... [2020-11-30 02:06:03,011 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add_1-2.i [2020-11-30 02:06:03,023 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:06:03,028 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-11-30 02:06:03,040 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-11-30 02:06:03,077 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:06:03,078 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:06:03,078 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:06:03,078 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:06:03,078 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:06:03,079 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:06:03,079 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:06:03,079 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:06:03,102 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-11-30 02:06:03,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 02:06:03,114 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:03,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 02:06:03,116 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 02:06:03,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:03,123 INFO L82 PathProgramCache]: Analyzing trace with hash 295188, now seen corresponding path program 1 times [2020-11-30 02:06:03,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:03,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387379439] [2020-11-30 02:06:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:03,276 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 02:06:03,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387379439] [2020-11-30 02:06:03,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:03,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 02:06:03,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693388939] [2020-11-30 02:06:03,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:06:03,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:03,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:06:03,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:06:03,300 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 2 states. [2020-11-30 02:06:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:03,321 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2020-11-30 02:06:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:06:03,322 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 3 [2020-11-30 02:06:03,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:03,333 INFO L225 Difference]: With dead ends: 99 [2020-11-30 02:06:03,333 INFO L226 Difference]: Without dead ends: 60 [2020-11-30 02:06:03,336 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 02:06:03,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-30 02:06:03,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-30 02:06:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-30 02:06:03,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2020-11-30 02:06:03,376 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 3 [2020-11-30 02:06:03,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:03,376 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2020-11-30 02:06:03,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:06:03,376 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2020-11-30 02:06:03,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:06:03,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:03,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:06:03,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:06:03,379 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 02:06:03,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:03,380 INFO L82 PathProgramCache]: Analyzing trace with hash -125523724, now seen corresponding path program 1 times [2020-11-30 02:06:03,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:03,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856875928] [2020-11-30 02:06:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:03,551 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 02:06:03,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856875928] [2020-11-30 02:06:03,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:03,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:06:03,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094366069] [2020-11-30 02:06:03,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:06:03,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:03,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:06:03,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:06:03,554 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 3 states. [2020-11-30 02:06:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:03,721 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2020-11-30 02:06:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:06:03,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-30 02:06:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:03,724 INFO L225 Difference]: With dead ends: 120 [2020-11-30 02:06:03,724 INFO L226 Difference]: Without dead ends: 81 [2020-11-30 02:06:03,725 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 02:06:03,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-30 02:06:03,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-11-30 02:06:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 02:06:03,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2020-11-30 02:06:03,741 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 12 [2020-11-30 02:06:03,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:03,742 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2020-11-30 02:06:03,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:06:03,742 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2020-11-30 02:06:03,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:06:03,743 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:03,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:06:03,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:06:03,744 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 02:06:03,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:03,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1894286807, now seen corresponding path program 1 times [2020-11-30 02:06:03,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:03,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483206255] [2020-11-30 02:06:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:03,937 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 02:06:03,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483206255] [2020-11-30 02:06:03,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747749185] [2020-11-30 02:06:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/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 02:06:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:04,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:06:04,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:06:04,068 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 02:06:04,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:04,115 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 02:06:04,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1488283323] [2020-11-30 02:06:04,150 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-11-30 02:06:04,150 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:06:04,155 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:06:04,162 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:06:04,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:06:04,507 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:06:04,872 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 02:06:05,263 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-11-30 02:06:05,675 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-11-30 02:06:06,144 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-11-30 02:06:06,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:06:06,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 4] total 11 [2020-11-30 02:06:06,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628118516] [2020-11-30 02:06:06,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:06:06,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:06,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:06:06,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:06:06,150 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 6 states. [2020-11-30 02:06:06,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:06,564 INFO L93 Difference]: Finished difference Result 198 states and 249 transitions. [2020-11-30 02:06:06,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:06:06,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-30 02:06:06,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:06,569 INFO L225 Difference]: With dead ends: 198 [2020-11-30 02:06:06,569 INFO L226 Difference]: Without dead ends: 124 [2020-11-30 02:06:06,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:06:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-30 02:06:06,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 78. [2020-11-30 02:06:06,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-30 02:06:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2020-11-30 02:06:06,589 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 15 [2020-11-30 02:06:06,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:06,590 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2020-11-30 02:06:06,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:06:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2020-11-30 02:06:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:06:06,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:06,591 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 02:06:06,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 02:06:06,807 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 02:06:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:06,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2138737962, now seen corresponding path program 1 times [2020-11-30 02:06:06,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:06,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849019684] [2020-11-30 02:06:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:06,914 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 02:06:06,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849019684] [2020-11-30 02:06:06,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871667135] [2020-11-30 02:06:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/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 02:06:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:06,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:06:06,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:06:06,992 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 02:06:06,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:07,022 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 02:06:07,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [497221304] [2020-11-30 02:06:07,025 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2020-11-30 02:06:07,025 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:06:07,025 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:06:07,025 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:06:07,026 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:06:07,168 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:06:07,381 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 02:06:07,666 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-11-30 02:06:07,904 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-11-30 02:06:08,274 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-11-30 02:06:08,666 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2020-11-30 02:06:09,074 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2020-11-30 02:06:09,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:06:09,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 13 [2020-11-30 02:06:09,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444070378] [2020-11-30 02:06:09,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:06:09,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:09,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:06:09,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:06:09,079 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 8 states. [2020-11-30 02:06:09,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:09,600 INFO L93 Difference]: Finished difference Result 226 states and 280 transitions. [2020-11-30 02:06:09,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:06:09,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-11-30 02:06:09,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:09,603 INFO L225 Difference]: With dead ends: 226 [2020-11-30 02:06:09,603 INFO L226 Difference]: Without dead ends: 179 [2020-11-30 02:06:09,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:06:09,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-30 02:06:09,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 78. [2020-11-30 02:06:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-30 02:06:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2020-11-30 02:06:09,619 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 18 [2020-11-30 02:06:09,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:09,620 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2020-11-30 02:06:09,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:06:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2020-11-30 02:06:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 02:06:09,621 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:09,621 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 02:06:09,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:06:09,832 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 02:06:09,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:09,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2058889020, now seen corresponding path program 1 times [2020-11-30 02:06:09,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:09,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215783043] [2020-11-30 02:06:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:06:09,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215783043] [2020-11-30 02:06:09,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:09,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:06:09,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149942473] [2020-11-30 02:06:09,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:06:09,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:09,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:06:09,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:06:09,950 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 4 states. [2020-11-30 02:06:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:10,074 INFO L93 Difference]: Finished difference Result 127 states and 156 transitions. [2020-11-30 02:06:10,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:06:10,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-30 02:06:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:10,077 INFO L225 Difference]: With dead ends: 127 [2020-11-30 02:06:10,077 INFO L226 Difference]: Without dead ends: 80 [2020-11-30 02:06:10,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:06:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-30 02:06:10,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-11-30 02:06:10,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-30 02:06:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 92 transitions. [2020-11-30 02:06:10,091 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 92 transitions. Word has length 21 [2020-11-30 02:06:10,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:10,092 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 92 transitions. [2020-11-30 02:06:10,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:06:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 92 transitions. [2020-11-30 02:06:10,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 02:06:10,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:10,094 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 02:06:10,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 02:06:10,094 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 02:06:10,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:10,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1458701035, now seen corresponding path program 1 times [2020-11-30 02:06:10,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:10,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117154676] [2020-11-30 02:06:10,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:10,216 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 02:06:10,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117154676] [2020-11-30 02:06:10,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354814340] [2020-11-30 02:06:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/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 02:06:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:10,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 02:06:10,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:06:10,398 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 02:06:10,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:10,452 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 02:06:10,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:06:10,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 8 [2020-11-30 02:06:10,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323409998] [2020-11-30 02:06:10,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:06:10,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:10,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:06:10,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:06:10,455 INFO L87 Difference]: Start difference. First operand 77 states and 92 transitions. Second operand 6 states. [2020-11-30 02:06:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:10,864 INFO L93 Difference]: Finished difference Result 180 states and 250 transitions. [2020-11-30 02:06:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:06:10,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-30 02:06:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:10,866 INFO L225 Difference]: With dead ends: 180 [2020-11-30 02:06:10,866 INFO L226 Difference]: Without dead ends: 141 [2020-11-30 02:06:10,867 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 02:06:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-30 02:06:10,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 126. [2020-11-30 02:06:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-11-30 02:06:10,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 164 transitions. [2020-11-30 02:06:10,893 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 164 transitions. Word has length 30 [2020-11-30 02:06:10,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:10,893 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 164 transitions. [2020-11-30 02:06:10,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:06:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 164 transitions. [2020-11-30 02:06:10,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 02:06:10,900 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:10,900 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 02:06:11,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 02:06:11,127 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 02:06:11,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:11,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1252437152, now seen corresponding path program 1 times [2020-11-30 02:06:11,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:11,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241430860] [2020-11-30 02:06:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:11,278 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 02:06:11,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241430860] [2020-11-30 02:06:11,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:11,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:06:11,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268462110] [2020-11-30 02:06:11,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:06:11,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:11,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:06:11,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:06:11,280 INFO L87 Difference]: Start difference. First operand 126 states and 164 transitions. Second operand 5 states. [2020-11-30 02:06:11,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:11,505 INFO L93 Difference]: Finished difference Result 164 states and 209 transitions. [2020-11-30 02:06:11,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:06:11,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-30 02:06:11,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:11,508 INFO L225 Difference]: With dead ends: 164 [2020-11-30 02:06:11,508 INFO L226 Difference]: Without dead ends: 142 [2020-11-30 02:06:11,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 02:06:11,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-30 02:06:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2020-11-30 02:06:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-30 02:06:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 151 transitions. [2020-11-30 02:06:11,526 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 151 transitions. Word has length 39 [2020-11-30 02:06:11,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:11,527 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 151 transitions. [2020-11-30 02:06:11,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:06:11,527 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 151 transitions. [2020-11-30 02:06:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-30 02:06:11,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:11,535 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2020-11-30 02:06:11,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 02:06:11,536 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 02:06:11,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:11,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1243145505, now seen corresponding path program 1 times [2020-11-30 02:06:11,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:11,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980008296] [2020-11-30 02:06:11,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 02:06:11,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980008296] [2020-11-30 02:06:11,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427900207] [2020-11-30 02:06:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/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 02:06:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:11,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-30 02:06:11,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:06:12,528 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-11-30 02:06:12,837 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 21 [2020-11-30 02:06:13,155 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 02:06:13,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:15,380 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 02:06:15,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [575704930] [2020-11-30 02:06:15,383 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2020-11-30 02:06:15,383 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:06:15,384 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:06:15,384 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:06:15,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:06:16,517 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:06:16,939 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-11-30 02:06:17,379 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 02:06:17,919 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-11-30 02:06:18,325 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-11-30 02:06:18,703 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-11-30 02:06:19,104 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-11-30 02:06:19,623 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2020-11-30 02:06:20,355 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-11-30 02:06:20,818 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-11-30 02:06:21,091 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-11-30 02:06:21,343 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-11-30 02:06:21,636 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-11-30 02:06:22,548 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-11-30 02:06:25,289 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-11-30 02:06:25,784 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-11-30 02:06:26,322 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-30 02:06:27,419 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:06:27,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:06:27,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 16] total 38 [2020-11-30 02:06:27,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126321365] [2020-11-30 02:06:27,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-30 02:06:27,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:27,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-30 02:06:27,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=2607, Unknown=1, NotChecked=0, Total=2970 [2020-11-30 02:06:27,423 INFO L87 Difference]: Start difference. First operand 117 states and 151 transitions. Second operand 38 states. [2020-11-30 02:06:28,047 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-11-30 02:06:30,731 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-11-30 02:06:31,168 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2020-11-30 02:06:34,540 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-11-30 02:06:34,987 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-11-30 02:06:35,531 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-11-30 02:06:37,882 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2020-11-30 02:06:38,483 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-11-30 02:06:38,783 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-11-30 02:06:39,595 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2020-11-30 02:06:39,986 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2020-11-30 02:06:43,019 WARN L193 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2020-11-30 02:06:43,396 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2020-11-30 02:06:43,695 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2020-11-30 02:06:44,348 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-11-30 02:06:44,759 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-11-30 02:06:45,108 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-11-30 02:06:45,598 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-11-30 02:06:45,874 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 27 [2020-11-30 02:06:46,186 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-11-30 02:06:46,543 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-11-30 02:06:47,295 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-11-30 02:06:47,874 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-11-30 02:06:50,335 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-11-30 02:06:50,707 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-11-30 02:06:51,723 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-11-30 02:06:52,053 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-11-30 02:06:52,782 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2020-11-30 02:06:55,522 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2020-11-30 02:06:55,824 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-11-30 02:06:58,240 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-11-30 02:06:58,717 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2020-11-30 02:07:01,345 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-11-30 02:07:01,961 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 41 [2020-11-30 02:07:02,342 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 35 [2020-11-30 02:07:02,876 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-11-30 02:07:03,277 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-11-30 02:07:03,629 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-11-30 02:07:08,405 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-11-30 02:07:11,026 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-11-30 02:07:11,402 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-11-30 02:07:11,715 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-11-30 02:07:12,259 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 44 [2020-11-30 02:07:12,866 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2020-11-30 02:07:13,221 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 33 [2020-11-30 02:07:13,581 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-11-30 02:07:14,077 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-11-30 02:07:14,768 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2020-11-30 02:07:15,786 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-11-30 02:07:16,354 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-11-30 02:07:16,904 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-11-30 02:07:17,906 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-11-30 02:07:20,511 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-11-30 02:07:23,243 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-11-30 02:07:23,673 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-30 02:07:27,125 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-11-30 02:07:27,388 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 25 [2020-11-30 02:07:28,167 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 27 [2020-11-30 02:07:29,594 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2020-11-30 02:07:32,059 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 22 [2020-11-30 02:07:32,617 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2020-11-30 02:07:33,008 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-11-30 02:07:33,828 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2020-11-30 02:07:34,869 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2020-11-30 02:07:35,427 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-11-30 02:07:37,830 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2020-11-30 02:07:38,663 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2020-11-30 02:07:38,959 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2020-11-30 02:07:41,650 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-11-30 02:07:42,873 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2020-11-30 02:07:43,550 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 34 [2020-11-30 02:07:43,862 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2020-11-30 02:07:44,257 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-11-30 02:07:44,747 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2020-11-30 02:07:45,103 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2020-11-30 02:07:45,806 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2020-11-30 02:07:46,431 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 22 [2020-11-30 02:07:46,938 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-11-30 02:07:49,871 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-11-30 02:07:50,254 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2020-11-30 02:07:50,764 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 37 [2020-11-30 02:07:51,297 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 27 [2020-11-30 02:07:51,712 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-11-30 02:07:52,351 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2020-11-30 02:07:57,485 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2020-11-30 02:08:00,370 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2020-11-30 02:08:03,191 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-11-30 02:08:04,216 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-11-30 02:08:04,871 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-11-30 02:08:07,670 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-11-30 02:08:08,259 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 30 [2020-11-30 02:08:09,139 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-11-30 02:08:09,883 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 34 [2020-11-30 02:08:10,339 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2020-11-30 02:08:10,770 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 30 [2020-11-30 02:08:11,150 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 28 [2020-11-30 02:08:11,610 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2020-11-30 02:08:12,021 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 28 [2020-11-30 02:08:12,553 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2020-11-30 02:08:15,152 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2020-11-30 02:08:15,438 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2020-11-30 02:08:15,695 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 22 [2020-11-30 02:08:16,030 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 28 [2020-11-30 02:08:16,298 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 27 [2020-11-30 02:08:21,196 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-11-30 02:08:25,741 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2020-11-30 02:08:26,252 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-11-30 02:08:28,853 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-11-30 02:08:29,109 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2020-11-30 02:08:29,592 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 35 [2020-11-30 02:08:36,753 WARN L193 SmtUtils]: Spent 6.83 s on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-11-30 02:08:37,073 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2020-11-30 02:08:38,619 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-11-30 02:08:38,951 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-11-30 02:08:39,184 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-11-30 02:08:39,644 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-11-30 02:08:42,737 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-11-30 02:08:43,521 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-11-30 02:08:44,462 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-11-30 02:08:44,810 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2020-11-30 02:08:45,492 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-11-30 02:08:46,589 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 38 [2020-11-30 02:08:47,299 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2020-11-30 02:08:47,807 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2020-11-30 02:08:48,314 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 34 [2020-11-30 02:08:49,384 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2020-11-30 02:08:49,821 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 32 [2020-11-30 02:08:50,808 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2020-11-30 02:08:51,313 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-11-30 02:08:51,675 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 25 [2020-11-30 02:08:51,948 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 26 [2020-11-30 02:08:52,441 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-11-30 02:08:52,725 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-11-30 02:08:53,395 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-11-30 02:08:53,669 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2020-11-30 02:08:54,584 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-11-30 02:08:54,896 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-11-30 02:08:58,424 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2020-11-30 02:09:00,865 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-11-30 02:09:03,242 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-11-30 02:09:03,820 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2020-11-30 02:09:04,253 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-11-30 02:09:04,996 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2020-11-30 02:09:05,843 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-11-30 02:09:08,935 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-11-30 02:09:10,454 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-11-30 02:09:13,573 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-11-30 02:09:16,532 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-11-30 02:09:19,457 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-11-30 02:09:19,755 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2020-11-30 02:09:20,574 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 29 [2020-11-30 02:09:20,896 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-11-30 02:09:22,357 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-11-30 02:09:22,882 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-11-30 02:09:23,425 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2020-11-30 02:09:23,992 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-11-30 02:09:24,870 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2020-11-30 02:09:25,421 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2020-11-30 02:09:25,792 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 25 [2020-11-30 02:09:28,507 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 27 [2020-11-30 02:09:28,938 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-11-30 02:09:29,507 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-11-30 02:09:29,922 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-11-30 02:09:30,772 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-11-30 02:09:31,093 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2020-11-30 02:09:31,601 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-11-30 02:09:32,536 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-11-30 02:09:33,029 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-11-30 02:09:33,665 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-11-30 02:09:34,290 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2020-11-30 02:09:34,966 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-11-30 02:09:40,291 WARN L193 SmtUtils]: Spent 4.74 s on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-11-30 02:09:41,193 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-11-30 02:09:41,927 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-11-30 02:09:44,706 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-11-30 02:09:45,234 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-11-30 02:09:48,306 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-11-30 02:09:48,675 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-11-30 02:09:49,146 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-11-30 02:09:49,987 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-11-30 02:09:50,629 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-11-30 02:09:53,869 WARN L193 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2020-11-30 02:09:54,512 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-11-30 02:09:54,759 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-11-30 02:09:57,912 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 33 [2020-11-30 02:10:00,707 WARN L193 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-11-30 02:10:01,357 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-11-30 02:10:01,710 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-11-30 02:10:02,460 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-11-30 02:10:03,017 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-11-30 02:10:03,711 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-11-30 02:10:04,261 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-11-30 02:10:04,847 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-11-30 02:10:05,166 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-11-30 02:10:05,614 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-11-30 02:10:06,320 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-11-30 02:10:06,640 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-11-30 02:10:07,450 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-11-30 02:10:08,266 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-11-30 02:10:08,958 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-11-30 02:10:09,784 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-11-30 02:10:09,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:10:09,794 INFO L93 Difference]: Finished difference Result 1300 states and 1744 transitions. [2020-11-30 02:10:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 330 states. [2020-11-30 02:10:09,797 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 48 [2020-11-30 02:10:09,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:10:09,806 INFO L225 Difference]: With dead ends: 1300 [2020-11-30 02:10:09,807 INFO L226 Difference]: Without dead ends: 1183 [2020-11-30 02:10:09,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 112 SyntacticMatches, 16 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59768 ImplicationChecksByTransitivity, 203.4s TimeCoverageRelationStatistics Valid=17081, Invalid=125415, Unknown=10, NotChecked=0, Total=142506 [2020-11-30 02:10:09,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2020-11-30 02:10:09,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 348. [2020-11-30 02:10:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-11-30 02:10:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 467 transitions. [2020-11-30 02:10:09,919 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 467 transitions. Word has length 48 [2020-11-30 02:10:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:10:09,920 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 467 transitions. [2020-11-30 02:10:09,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-30 02:10:09,920 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 467 transitions. [2020-11-30 02:10:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-30 02:10:09,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:10:09,922 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 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, 1] [2020-11-30 02:10:10,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:10:10,131 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 02:10:10,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:10:10,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1408498827, now seen corresponding path program 1 times [2020-11-30 02:10:10,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:10:10,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752849075] [2020-11-30 02:10:10,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:10:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:10:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-30 02:10:10,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752849075] [2020-11-30 02:10:10,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586581110] [2020-11-30 02:10:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/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 02:10:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:10:10,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 02:10:10,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:10:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-30 02:10:10,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:10:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 02:10:10,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1419383182] [2020-11-30 02:10:10,798 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2020-11-30 02:10:10,798 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:10:10,799 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:10:10,799 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:10:10,799 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:10:12,012 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:10:12,752 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 02:10:13,389 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-11-30 02:10:14,039 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-11-30 02:10:14,695 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-11-30 02:10:15,373 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-11-30 02:10:16,124 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2020-11-30 02:10:17,258 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-11-30 02:10:18,384 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2020-11-30 02:10:18,833 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2020-11-30 02:10:19,053 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2020-11-30 02:10:19,347 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2020-11-30 02:10:19,919 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2020-11-30 02:10:20,365 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-11-30 02:10:20,650 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 17 [2020-11-30 02:10:21,044 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:10:21,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:10:21,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2020-11-30 02:10:21,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110623284] [2020-11-30 02:10:21,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:10:21,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:10:21,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:10:21,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2020-11-30 02:10:21,046 INFO L87 Difference]: Start difference. First operand 348 states and 467 transitions. Second operand 8 states. [2020-11-30 02:10:23,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:10:23,210 INFO L93 Difference]: Finished difference Result 1181 states and 1636 transitions. [2020-11-30 02:10:23,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 02:10:23,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-11-30 02:10:23,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:10:23,221 INFO L225 Difference]: With dead ends: 1181 [2020-11-30 02:10:23,222 INFO L226 Difference]: Without dead ends: 807 [2020-11-30 02:10:23,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 154 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=223, Invalid=1337, Unknown=0, NotChecked=0, Total=1560 [2020-11-30 02:10:23,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-11-30 02:10:23,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 490. [2020-11-30 02:10:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-11-30 02:10:23,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 639 transitions. [2020-11-30 02:10:23,278 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 639 transitions. Word has length 60 [2020-11-30 02:10:23,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:10:23,278 INFO L481 AbstractCegarLoop]: Abstraction has 490 states and 639 transitions. [2020-11-30 02:10:23,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:10:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 639 transitions. [2020-11-30 02:10:23,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-30 02:10:23,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:10:23,282 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2020-11-30 02:10:23,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-11-30 02:10:23,498 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 02:10:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:10:23,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1584112789, now seen corresponding path program 1 times [2020-11-30 02:10:23,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:10:23,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76959563] [2020-11-30 02:10:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:10:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:10:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-30 02:10:23,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76959563] [2020-11-30 02:10:23,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:10:23,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:10:23,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740292215] [2020-11-30 02:10:23,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:10:23,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:10:23,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:10:23,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:10:23,923 INFO L87 Difference]: Start difference. First operand 490 states and 639 transitions. Second operand 5 states. [2020-11-30 02:10:24,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:10:24,697 INFO L93 Difference]: Finished difference Result 1196 states and 1538 transitions. [2020-11-30 02:10:24,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:10:24,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-11-30 02:10:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:10:24,710 INFO L225 Difference]: With dead ends: 1196 [2020-11-30 02:10:24,711 INFO L226 Difference]: Without dead ends: 729 [2020-11-30 02:10:24,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:10:24,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-11-30 02:10:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 546. [2020-11-30 02:10:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-11-30 02:10:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 696 transitions. [2020-11-30 02:10:24,770 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 696 transitions. Word has length 60 [2020-11-30 02:10:24,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:10:24,770 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 696 transitions. [2020-11-30 02:10:24,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:10:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 696 transitions. [2020-11-30 02:10:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-30 02:10:24,772 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:10:24,773 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-11-30 02:10:24,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2020-11-30 02:10:24,773 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 02:10:24,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:10:24,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1635345351, now seen corresponding path program 1 times [2020-11-30 02:10:24,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:10:24,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535681920] [2020-11-30 02:10:24,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:10:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:10:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-11-30 02:10:25,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535681920] [2020-11-30 02:10:25,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:10:25,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:10:25,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875042001] [2020-11-30 02:10:25,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:10:25,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:10:25,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:10:25,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:10:25,179 INFO L87 Difference]: Start difference. First operand 546 states and 696 transitions. Second operand 6 states. [2020-11-30 02:10:27,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:10:27,945 INFO L93 Difference]: Finished difference Result 2245 states and 2853 transitions. [2020-11-30 02:10:27,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:10:27,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-11-30 02:10:27,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:10:27,967 INFO L225 Difference]: With dead ends: 2245 [2020-11-30 02:10:27,967 INFO L226 Difference]: Without dead ends: 2156 [2020-11-30 02:10:27,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:10:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2020-11-30 02:10:28,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 546. [2020-11-30 02:10:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-11-30 02:10:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 696 transitions. [2020-11-30 02:10:28,082 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 696 transitions. Word has length 66 [2020-11-30 02:10:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:10:28,083 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 696 transitions. [2020-11-30 02:10:28,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:10:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 696 transitions. [2020-11-30 02:10:28,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-30 02:10:28,086 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:10:28,087 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] [2020-11-30 02:10:28,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2020-11-30 02:10:28,087 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 02:10:28,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:10:28,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1109163050, now seen corresponding path program 1 times [2020-11-30 02:10:28,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:10:28,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155294768] [2020-11-30 02:10:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:10:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:10:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-30 02:10:28,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155294768] [2020-11-30 02:10:28,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951210499] [2020-11-30 02:10:28,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/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 02:10:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:10:28,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:10:28,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:10:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-30 02:10:28,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:10:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 02:10:29,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [275113104] [2020-11-30 02:10:29,069 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2020-11-30 02:10:29,069 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:10:29,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:10:29,070 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:10:29,070 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:10:30,290 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:10:30,620 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 28 [2020-11-30 02:10:31,385 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 02:10:32,147 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-11-30 02:10:32,904 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-11-30 02:10:34,157 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 132 DAG size of output: 107 [2020-11-30 02:10:34,863 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2020-11-30 02:10:35,080 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2020-11-30 02:10:35,307 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2020-11-30 02:10:36,277 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 19 [2020-11-30 02:10:36,645 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 22 [2020-11-30 02:10:36,647 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:10:36,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:10:36,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 6] total 12 [2020-11-30 02:10:36,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066044321] [2020-11-30 02:10:36,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 02:10:36,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:10:36,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 02:10:36,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2020-11-30 02:10:36,649 INFO L87 Difference]: Start difference. First operand 546 states and 696 transitions. Second operand 13 states. [2020-11-30 02:10:39,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:10:39,073 INFO L93 Difference]: Finished difference Result 1437 states and 1866 transitions. [2020-11-30 02:10:39,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 02:10:39,076 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-11-30 02:10:39,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:10:39,082 INFO L225 Difference]: With dead ends: 1437 [2020-11-30 02:10:39,082 INFO L226 Difference]: Without dead ends: 856 [2020-11-30 02:10:39,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 168 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2020-11-30 02:10:39,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2020-11-30 02:10:39,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 714. [2020-11-30 02:10:39,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2020-11-30 02:10:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 920 transitions. [2020-11-30 02:10:39,156 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 920 transitions. Word has length 66 [2020-11-30 02:10:39,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:10:39,156 INFO L481 AbstractCegarLoop]: Abstraction has 714 states and 920 transitions. [2020-11-30 02:10:39,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 02:10:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 920 transitions. [2020-11-30 02:10:39,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-30 02:10:39,159 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:10:39,159 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-11-30 02:10:39,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:10:39,383 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 02:10:39,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:10:39,384 INFO L82 PathProgramCache]: Analyzing trace with hash 610775235, now seen corresponding path program 1 times [2020-11-30 02:10:39,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:10:39,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077301] [2020-11-30 02:10:39,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:10:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:10:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-11-30 02:10:39,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077301] [2020-11-30 02:10:39,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:10:39,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 02:10:39,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992350775] [2020-11-30 02:10:39,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:10:39,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:10:39,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:10:39,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:10:39,788 INFO L87 Difference]: Start difference. First operand 714 states and 920 transitions. Second operand 7 states. [2020-11-30 02:10:41,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:10:41,725 INFO L93 Difference]: Finished difference Result 1786 states and 2278 transitions. [2020-11-30 02:10:41,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 02:10:41,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-11-30 02:10:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:10:41,739 INFO L225 Difference]: With dead ends: 1786 [2020-11-30 02:10:41,739 INFO L226 Difference]: Without dead ends: 1697 [2020-11-30 02:10:41,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:10:41,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-11-30 02:10:41,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 711. [2020-11-30 02:10:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2020-11-30 02:10:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 917 transitions. [2020-11-30 02:10:41,818 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 917 transitions. Word has length 68 [2020-11-30 02:10:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:10:41,819 INFO L481 AbstractCegarLoop]: Abstraction has 711 states and 917 transitions. [2020-11-30 02:10:41,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:10:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 917 transitions. [2020-11-30 02:10:41,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-30 02:10:41,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:10:41,821 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 02:10:41,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2020-11-30 02:10:41,822 INFO L429 AbstractCegarLoop]: === Iteration 14 === [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 02:10:41,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:10:41,823 INFO L82 PathProgramCache]: Analyzing trace with hash 645929539, now seen corresponding path program 1 times [2020-11-30 02:10:41,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:10:41,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234140991] [2020-11-30 02:10:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:10:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:10:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-30 02:10:42,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234140991] [2020-11-30 02:10:42,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715021991] [2020-11-30 02:10:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3433b408-cba2-4ce8-b7bb-053ccfb35586/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 02:10:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:10:42,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 02:10:42,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:10:43,412 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-30 02:10:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 31 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-30 02:10:44,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:10:48,817 WARN L193 SmtUtils]: Spent 4.33 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-30 02:10:50,908 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_ULTIMATE.start_mp_add_~a3~0 256)) (.cse2 (mod c_ULTIMATE.start_mp_add_~partial_sum~0 65536))) (let ((.cse0 (< 255 (mod (+ .cse1 .cse2) 65536)))) (and (or (= (mod c_ULTIMATE.start_mp_add_~i~0 256) 3) .cse0) (or (<= (div (+ (* .cse1 16777216) (* .cse2 16777216) (- 2147483648)) 4294967296) (div (+ .cse1 .cse2 (- 256)) 256)) .cse0)))) is different from true [2020-11-30 02:10:53,033 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_ULTIMATE.start_mp_add_~a3~0 256)) (.cse1 (mod c_ULTIMATE.start_mp_add_~partial_sum~0 65536))) (or (<= (div (+ (* .cse0 16777216) (* .cse1 16777216) (- 2147483648)) 4294967296) (div (+ .cse0 .cse1 (- 256)) 256)) (< 255 (mod (+ .cse0 .cse1) 65536)))) is different from true [2020-11-30 02:10:55,126 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_ULTIMATE.start_mp_add_~a3~0 256)) (.cse0 (mod c_ULTIMATE.start_mp_add_~carry~0 65536))) (or (<= (div (+ (* .cse0 16777216) (* .cse1 16777216) (- 2147483648)) 4294967296) (div (+ .cse0 .cse1 (- 256)) 256)) (< 255 (mod (+ .cse1 .cse0) 65536)))) is different from true [2020-11-30 02:11:03,926 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-30 02:11:03,927 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-30 02:11:03,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1241110324] [2020-11-30 02:11:03,929 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2020-11-30 02:11:03,929 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:11:03,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:11:03,930 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:11:03,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:11:04,224 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:229) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) 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) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:254) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 42 more [2020-11-30 02:11:04,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:11:04,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 02:11:04,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108330510] [2020-11-30 02:11:04,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:11:04,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:11:04,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:11:04,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=229, Unknown=3, NotChecked=96, Total=380 [2020-11-30 02:11:04,236 INFO L87 Difference]: Start difference. First operand 711 states and 917 transitions. Second operand 7 states. [2020-11-30 02:11:04,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:11:04,462 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:137) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:432) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:759) 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) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:254) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 31 more [2020-11-30 02:11:04,465 INFO L168 Benchmark]: Toolchain (without parser) took 302938.76 ms. Allocated memory was 88.1 MB in the beginning and 226.5 MB in the end (delta: 138.4 MB). Free memory was 54.0 MB in the beginning and 92.8 MB in the end (delta: -38.7 MB). Peak memory consumption was 99.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:04,465 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 59.1 MB in the beginning and 59.1 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:11:04,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.41 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 53.9 MB in the beginning and 82.5 MB in the end (delta: -28.6 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:04,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.73 ms. Allocated memory is still 107.0 MB. Free memory was 82.5 MB in the beginning and 80.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:04,466 INFO L168 Benchmark]: Boogie Preprocessor took 67.21 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 79.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:11:04,466 INFO L168 Benchmark]: RCFGBuilder took 970.49 ms. Allocated memory is still 107.0 MB. Free memory was 78.9 MB in the beginning and 63.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:04,467 INFO L168 Benchmark]: TraceAbstraction took 301459.99 ms. Allocated memory was 107.0 MB in the beginning and 226.5 MB in the end (delta: 119.5 MB). Free memory was 63.0 MB in the beginning and 92.8 MB in the end (delta: -29.8 MB). Peak memory consumption was 89.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:04,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 59.1 MB in the beginning and 59.1 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 392.41 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 53.9 MB in the beginning and 82.5 MB in the end (delta: -28.6 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.73 ms. Allocated memory is still 107.0 MB. Free memory was 82.5 MB in the beginning and 80.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.21 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 79.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 970.49 ms. Allocated memory is still 107.0 MB. Free memory was 78.9 MB in the beginning and 63.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 301459.99 ms. Allocated memory was 107.0 MB in the beginning and 226.5 MB in the end (delta: 119.5 MB). Free memory was 63.0 MB in the beginning and 92.8 MB in the end (delta: -29.8 MB). Peak memory consumption was 89.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...