./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/jain_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/jain_5-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/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 0368d031b914f0010e360e272c503cb20697a28d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/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)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:49:00,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:49:00,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:49:00,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:49:00,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:49:00,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:49:00,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:49:00,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:49:00,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:49:00,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:49:00,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:49:00,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:49:00,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:49:00,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:49:00,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:49:00,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:49:00,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:49:00,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:49:00,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:49:00,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:49:00,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:49:00,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:49:01,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:49:01,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:49:01,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:49:01,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:49:01,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:49:01,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:49:01,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:49:01,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:49:01,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:49:01,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:49:01,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:49:01,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:49:01,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:49:01,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:49:01,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:49:01,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:49:01,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:49:01,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:49:01,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:49:01,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-09 06:49:01,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:49:01,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:49:01,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:49:01,036 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:49:01,036 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:49:01,036 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:49:01,037 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:49:01,037 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:49:01,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:49:01,037 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:49:01,037 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:49:01,037 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:49:01,037 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:49:01,037 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:49:01,038 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:49:01,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:49:01,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:49:01,038 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 06:49:01,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:49:01,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:49:01,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:49:01,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:49:01,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:49:01,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:49:01,039 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 06:49:01,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:49:01,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:49:01,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:49:01,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:49:01,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:49:01,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:49:01,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:49:01,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:49:01,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:49:01,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:49:01,040 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:49:01,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:49:01,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:49:01,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:49:01,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:49:01,041 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_e6b46c20-f6c2-4b77-93f3-647e33436bf2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0368d031b914f0010e360e272c503cb20697a28d [2020-12-09 06:49:01,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:49:01,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:49:01,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:49:01,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:49:01,247 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:49:01,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/../../sv-benchmarks/c/bitvector/jain_5-1.c [2020-12-09 06:49:01,288 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/data/b9a424e90/e5d604c6a0714c79873854de8008edf0/FLAG783aa8ca1 [2020-12-09 06:49:01,659 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:49:01,659 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/sv-benchmarks/c/bitvector/jain_5-1.c [2020-12-09 06:49:01,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/data/b9a424e90/e5d604c6a0714c79873854de8008edf0/FLAG783aa8ca1 [2020-12-09 06:49:02,097 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/data/b9a424e90/e5d604c6a0714c79873854de8008edf0 [2020-12-09 06:49:02,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:49:02,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:49:02,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:49:02,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:49:02,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:49:02,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:49:02" (1/1) ... [2020-12-09 06:49:02,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef3af58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02, skipping insertion in model container [2020-12-09 06:49:02,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:49:02" (1/1) ... [2020-12-09 06:49:02,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:49:02,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:49:02,221 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/sv-benchmarks/c/bitvector/jain_5-1.c[360,373] [2020-12-09 06:49:02,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:49:02,238 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:49:02,247 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/sv-benchmarks/c/bitvector/jain_5-1.c[360,373] [2020-12-09 06:49:02,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:49:02,260 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:49:02,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02 WrapperNode [2020-12-09 06:49:02,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:49:02,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:49:02,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:49:02,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:49:02,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02" (1/1) ... [2020-12-09 06:49:02,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02" (1/1) ... [2020-12-09 06:49:02,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:49:02,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:49:02,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:49:02,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:49:02,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02" (1/1) ... [2020-12-09 06:49:02,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02" (1/1) ... [2020-12-09 06:49:02,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02" (1/1) ... [2020-12-09 06:49:02,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02" (1/1) ... [2020-12-09 06:49:02,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02" (1/1) ... [2020-12-09 06:49:02,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02" (1/1) ... [2020-12-09 06:49:02,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02" (1/1) ... [2020-12-09 06:49:02,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:49:02,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:49:02,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:49:02,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:49:02,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:49:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:49:02,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:49:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:49:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:49:02,523 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:49:02,523 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 06:49:02,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:49:02 BoogieIcfgContainer [2020-12-09 06:49:02,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:49:02,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:49:02,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:49:02,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:49:02,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:49:02" (1/3) ... [2020-12-09 06:49:02,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47797942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:49:02, skipping insertion in model container [2020-12-09 06:49:02,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:02" (2/3) ... [2020-12-09 06:49:02,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47797942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:49:02, skipping insertion in model container [2020-12-09 06:49:02,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:49:02" (3/3) ... [2020-12-09 06:49:02,534 INFO L111 eAbstractionObserver]: Analyzing ICFG jain_5-1.c [2020-12-09 06:49:02,548 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:49:02,550 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 06:49:02,560 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 06:49:02,580 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:49:02,580 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:49:02,580 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:49:02,580 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:49:02,580 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:49:02,581 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:49:02,581 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:49:02,581 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:49:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 06:49:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 06:49:02,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:02,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 06:49:02,599 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:49:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:02,604 INFO L82 PathProgramCache]: Analyzing trace with hash 64740, now seen corresponding path program 1 times [2020-12-09 06:49:02,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:49:02,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979959444] [2020-12-09 06:49:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:49:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:02,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979959444] [2020-12-09 06:49:02,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:49:02,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 06:49:02,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881145439] [2020-12-09 06:49:02,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:49:02,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:49:02,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:49:02,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:49:02,768 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-12-09 06:49:02,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:49:02,803 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-12-09 06:49:02,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:49:02,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-09 06:49:02,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:49:02,813 INFO L225 Difference]: With dead ends: 16 [2020-12-09 06:49:02,813 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 06:49:02,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:49:02,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 06:49:02,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-12-09 06:49:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 06:49:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-09 06:49:02,846 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2020-12-09 06:49:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:49:02,846 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-09 06:49:02,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:49:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-09 06:49:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 06:49:02,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:02,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 06:49:02,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:49:02,847 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:49:02,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:02,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2006985, now seen corresponding path program 1 times [2020-12-09 06:49:02,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:49:02,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302328080] [2020-12-09 06:49:02,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:49:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:02,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302328080] [2020-12-09 06:49:02,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:49:02,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 06:49:02,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599546160] [2020-12-09 06:49:02,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:49:02,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:49:02,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:49:02,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:49:02,885 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2020-12-09 06:49:02,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:49:02,902 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-12-09 06:49:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:49:02,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 06:49:02,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:49:02,903 INFO L225 Difference]: With dead ends: 14 [2020-12-09 06:49:02,903 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 06:49:02,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:49:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 06:49:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 06:49:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 06:49:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-09 06:49:02,907 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2020-12-09 06:49:02,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:49:02,907 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-09 06:49:02,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:49:02,908 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-09 06:49:02,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 06:49:02,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:02,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 06:49:02,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:49:02,909 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:49:02,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:02,909 INFO L82 PathProgramCache]: Analyzing trace with hash 62216582, now seen corresponding path program 1 times [2020-12-09 06:49:02,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:49:02,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795666894] [2020-12-09 06:49:02,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:49:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:02,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795666894] [2020-12-09 06:49:02,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:49:02,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 06:49:02,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812540589] [2020-12-09 06:49:02,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:49:02,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:49:02,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:49:02,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:49:02,944 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2020-12-09 06:49:02,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:49:02,962 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-12-09 06:49:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:49:02,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 06:49:02,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:49:02,963 INFO L225 Difference]: With dead ends: 16 [2020-12-09 06:49:02,963 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 06:49:02,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:49:02,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 06:49:02,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-12-09 06:49:02,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 06:49:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-12-09 06:49:02,967 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2020-12-09 06:49:02,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:49:02,967 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-12-09 06:49:02,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:49:02,968 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-12-09 06:49:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 06:49:02,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:02,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 06:49:02,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:49:02,969 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:49:02,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:02,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1928714091, now seen corresponding path program 1 times [2020-12-09 06:49:02,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:49:02,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496445038] [2020-12-09 06:49:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:49:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:02,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496445038] [2020-12-09 06:49:02,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:49:02,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 06:49:02,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709944163] [2020-12-09 06:49:02,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:49:02,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:49:02,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:49:02,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:49:02,997 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2020-12-09 06:49:03,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:49:03,007 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-12-09 06:49:03,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:49:03,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 06:49:03,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:49:03,008 INFO L225 Difference]: With dead ends: 14 [2020-12-09 06:49:03,008 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 06:49:03,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:49:03,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 06:49:03,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 06:49:03,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 06:49:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-09 06:49:03,012 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2020-12-09 06:49:03,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:49:03,012 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-09 06:49:03,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:49:03,012 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-09 06:49:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 06:49:03,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:03,013 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-12-09 06:49:03,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 06:49:03,013 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:49:03,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:03,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1931606043, now seen corresponding path program 1 times [2020-12-09 06:49:03,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:49:03,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382170644] [2020-12-09 06:49:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:49:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:03,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382170644] [2020-12-09 06:49:03,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163385554] [2020-12-09 06:49:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:49:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:03,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 06:49:03,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:49:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:03,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:49:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:03,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [877424330] [2020-12-09 06:49:03,217 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 06:49:03,217 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:49:03,222 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:49:03,227 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:49:03,227 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:49:03,600 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:49:03,854 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-09 06:49:04,026 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-09 06:49:04,162 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:49:04,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:49:04,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2020-12-09 06:49:04,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311153812] [2020-12-09 06:49:04,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 06:49:04,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:49:04,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 06:49:04,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-12-09 06:49:04,164 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 11 states. [2020-12-09 06:49:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:49:04,251 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-12-09 06:49:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 06:49:04,251 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 8 [2020-12-09 06:49:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:49:04,251 INFO L225 Difference]: With dead ends: 24 [2020-12-09 06:49:04,252 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 06:49:04,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-12-09 06:49:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 06:49:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-12-09 06:49:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 06:49:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-12-09 06:49:04,255 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2020-12-09 06:49:04,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:49:04,255 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-12-09 06:49:04,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 06:49:04,255 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-12-09 06:49:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 06:49:04,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:04,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-12-09 06:49:04,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:49:04,458 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:49:04,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:04,459 INFO L82 PathProgramCache]: Analyzing trace with hash 249754856, now seen corresponding path program 1 times [2020-12-09 06:49:04,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:49:04,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795229179] [2020-12-09 06:49:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:49:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:04,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795229179] [2020-12-09 06:49:04,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399749071] [2020-12-09 06:49:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:49:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:04,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 06:49:04,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:49:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:04,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:49:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:04,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 06:49:04,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2020-12-09 06:49:04,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596720845] [2020-12-09 06:49:04,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:49:04,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:49:04,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:49:04,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-12-09 06:49:04,806 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2020-12-09 06:49:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:49:04,835 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-12-09 06:49:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:49:04,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 06:49:04,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:49:04,836 INFO L225 Difference]: With dead ends: 21 [2020-12-09 06:49:04,836 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 06:49:04,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2020-12-09 06:49:04,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 06:49:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-09 06:49:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 06:49:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-12-09 06:49:04,839 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 9 [2020-12-09 06:49:04,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:49:04,839 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-12-09 06:49:04,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:49:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-12-09 06:49:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 06:49:04,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:04,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-12-09 06:49:05,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-12-09 06:49:05,042 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:49:05,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:05,043 INFO L82 PathProgramCache]: Analyzing trace with hash -847534009, now seen corresponding path program 1 times [2020-12-09 06:49:05,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:49:05,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234116216] [2020-12-09 06:49:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:49:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:05,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234116216] [2020-12-09 06:49:05,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155644076] [2020-12-09 06:49:05,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:49:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:05,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:49:05,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:49:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:05,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:49:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:05,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1550686341] [2020-12-09 06:49:05,226 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 06:49:05,226 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:49:05,226 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:49:05,227 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:49:05,227 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:49:05,449 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:49:05,713 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-09 06:49:05,911 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-09 06:49:06,018 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:49:06,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:49:06,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2020-12-09 06:49:06,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230825270] [2020-12-09 06:49:06,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 06:49:06,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:49:06,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 06:49:06,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-09 06:49:06,020 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2020-12-09 06:49:06,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:49:06,048 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-12-09 06:49:06,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:49:06,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 06:49:06,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:49:06,049 INFO L225 Difference]: With dead ends: 29 [2020-12-09 06:49:06,049 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 06:49:06,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-09 06:49:06,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 06:49:06,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-12-09 06:49:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 06:49:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 06:49:06,053 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 10 [2020-12-09 06:49:06,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:49:06,053 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 06:49:06,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 06:49:06,053 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 06:49:06,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 06:49:06,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:06,054 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2020-12-09 06:49:06,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-12-09 06:49:06,256 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:49:06,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:06,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1907051707, now seen corresponding path program 2 times [2020-12-09 06:49:06,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:49:06,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788408253] [2020-12-09 06:49:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:49:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:06,484 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:06,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788408253] [2020-12-09 06:49:06,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556373228] [2020-12-09 06:49:06,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:49:06,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-09 06:49:06,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 06:49:06,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 06:49:06,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:49:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:06,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:49:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:06,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1443977640] [2020-12-09 06:49:06,751 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 06:49:06,751 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:49:06,751 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:49:06,751 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:49:06,751 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:49:06,918 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:49:07,205 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-09 06:49:07,374 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-09 06:49:07,490 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:49:07,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:49:07,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2020-12-09 06:49:07,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334723915] [2020-12-09 06:49:07,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-09 06:49:07,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:49:07,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-09 06:49:07,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2020-12-09 06:49:07,491 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 23 states. [2020-12-09 06:49:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:49:07,679 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-12-09 06:49:07,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 06:49:07,679 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 18 [2020-12-09 06:49:07,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:49:07,680 INFO L225 Difference]: With dead ends: 43 [2020-12-09 06:49:07,680 INFO L226 Difference]: Without dead ends: 42 [2020-12-09 06:49:07,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=340, Invalid=920, Unknown=0, NotChecked=0, Total=1260 [2020-12-09 06:49:07,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-09 06:49:07,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-12-09 06:49:07,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 06:49:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-12-09 06:49:07,684 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 18 [2020-12-09 06:49:07,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:49:07,684 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-12-09 06:49:07,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-09 06:49:07,684 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-12-09 06:49:07,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 06:49:07,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:07,685 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2020-12-09 06:49:07,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:49:07,887 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:49:07,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:07,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2114007750, now seen corresponding path program 2 times [2020-12-09 06:49:07,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:49:07,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845766845] [2020-12-09 06:49:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:49:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:07,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845766845] [2020-12-09 06:49:07,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255358005] [2020-12-09 06:49:07,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:49:08,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-09 06:49:08,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 06:49:08,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 06:49:08,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:49:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:08,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:49:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:08,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [624207103] [2020-12-09 06:49:08,146 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 06:49:08,146 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:49:08,146 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:49:08,146 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:49:08,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:49:08,311 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:49:08,525 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-09 06:49:08,697 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-09 06:49:08,815 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:49:08,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:49:08,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 19 [2020-12-09 06:49:08,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020589896] [2020-12-09 06:49:08,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-09 06:49:08,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:49:08,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-09 06:49:08,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2020-12-09 06:49:08,816 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 21 states. [2020-12-09 06:49:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:49:09,011 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-12-09 06:49:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-09 06:49:09,011 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 25 [2020-12-09 06:49:09,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:49:09,012 INFO L225 Difference]: With dead ends: 67 [2020-12-09 06:49:09,012 INFO L226 Difference]: Without dead ends: 66 [2020-12-09 06:49:09,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=1212, Unknown=0, NotChecked=0, Total=1482 [2020-12-09 06:49:09,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-09 06:49:09,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-12-09 06:49:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-09 06:49:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-12-09 06:49:09,017 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 25 [2020-12-09 06:49:09,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:49:09,017 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-12-09 06:49:09,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-09 06:49:09,017 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-12-09 06:49:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-09 06:49:09,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:09,018 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2020-12-09 06:49:09,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:49:09,219 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:49:09,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash -582753787, now seen corresponding path program 3 times [2020-12-09 06:49:09,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:49:09,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513357410] [2020-12-09 06:49:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:49:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:09,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513357410] [2020-12-09 06:49:09,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589582784] [2020-12-09 06:49:09,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:49:09,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 06:49:09,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 06:49:09,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 06:49:09,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:49:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:09,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:49:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:45,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1908779833] [2020-12-09 06:49:45,006 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 06:49:45,006 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:49:45,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:49:45,006 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:49:45,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:49:45,128 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:49:45,277 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-12-09 06:49:45,510 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-09 06:49:45,724 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-09 06:49:45,879 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:49:45,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:49:45,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2020-12-09 06:49:45,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551219302] [2020-12-09 06:49:45,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-12-09 06:49:45,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:49:45,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-12-09 06:49:45,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=2031, Unknown=17, NotChecked=0, Total=2652 [2020-12-09 06:49:45,881 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 47 states. [2020-12-09 06:50:03,377 WARN L197 SmtUtils]: Spent 14.39 s on a formula simplification. DAG size of input: 104 DAG size of output: 62 [2020-12-09 06:50:12,382 WARN L197 SmtUtils]: Spent 5.33 s on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-12-09 06:50:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:50:13,197 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2020-12-09 06:50:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-09 06:50:13,198 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 38 [2020-12-09 06:50:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:50:13,198 INFO L225 Difference]: With dead ends: 84 [2020-12-09 06:50:13,199 INFO L226 Difference]: Without dead ends: 83 [2020-12-09 06:50:13,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 62.9s TimeCoverageRelationStatistics Valid=1397, Invalid=3841, Unknown=18, NotChecked=0, Total=5256 [2020-12-09 06:50:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-09 06:50:13,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-12-09 06:50:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-09 06:50:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2020-12-09 06:50:13,205 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 38 [2020-12-09 06:50:13,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:50:13,205 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2020-12-09 06:50:13,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-12-09 06:50:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2020-12-09 06:50:13,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-09 06:50:13,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:50:13,207 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2020-12-09 06:50:13,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:50:13,408 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:50:13,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:50:13,409 INFO L82 PathProgramCache]: Analyzing trace with hash 205461799, now seen corresponding path program 3 times [2020-12-09 06:50:13,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:50:13,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106026990] [2020-12-09 06:50:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:50:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:50:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:50:13,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106026990] [2020-12-09 06:50:13,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414540534] [2020-12-09 06:50:13,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:50:13,877 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 06:50:13,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 06:50:13,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 06:50:13,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:50:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:50:14,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:50:14,788 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:50:14,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [585542419] [2020-12-09 06:50:14,789 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 06:50:14,789 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:50:14,790 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:50:14,790 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:50:14,790 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:50:14,920 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:50:15,318 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-09 06:50:15,635 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-09 06:50:15,843 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:50:15,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:50:15,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12, 12] total 47 [2020-12-09 06:50:15,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905540939] [2020-12-09 06:50:15,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-12-09 06:50:15,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:50:15,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-12-09 06:50:15,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=2420, Unknown=0, NotChecked=0, Total=2862 [2020-12-09 06:50:15,845 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 49 states. [2020-12-09 06:50:17,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:50:17,017 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2020-12-09 06:50:17,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-12-09 06:50:17,018 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 60 [2020-12-09 06:50:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:50:17,019 INFO L225 Difference]: With dead ends: 143 [2020-12-09 06:50:17,019 INFO L226 Difference]: Without dead ends: 142 [2020-12-09 06:50:17,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2044 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1126, Invalid=6356, Unknown=0, NotChecked=0, Total=7482 [2020-12-09 06:50:17,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-09 06:50:17,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132. [2020-12-09 06:50:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-09 06:50:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2020-12-09 06:50:17,028 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 60 [2020-12-09 06:50:17,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:50:17,028 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2020-12-09 06:50:17,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-12-09 06:50:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2020-12-09 06:50:17,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 06:50:17,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:50:17,029 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2020-12-09 06:50:17,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:50:17,231 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:50:17,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:50:17,232 INFO L82 PathProgramCache]: Analyzing trace with hash 22126469, now seen corresponding path program 4 times [2020-12-09 06:50:17,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:50:17,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754192794] [2020-12-09 06:50:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:50:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:50:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:50:17,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754192794] [2020-12-09 06:50:17,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873417367] [2020-12-09 06:50:17,870 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6b46c20-f6c2-4b77-93f3-647e33436bf2/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:50:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:50:17,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-09 06:50:17,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:50:19,075 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:50:19,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:55:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:55:13,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [40505841] [2020-12-09 06:55:13,077 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 06:55:13,077 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:55:13,077 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:55:13,077 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:55:13,077 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:55:13,358 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:55:13,924 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-12-09 06:55:14,801 WARN L197 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-09 06:55:15,774 WARN L197 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-09 06:55:16,092 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2020-12-09 06:55:16,438 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2020-12-09 06:55:16,441 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:55:16,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:55:16,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 93 [2020-12-09 06:55:16,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118737817] [2020-12-09 06:55:16,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-12-09 06:55:16,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:55:16,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-12-09 06:55:16,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2164, Invalid=7613, Unknown=123, NotChecked=0, Total=9900 [2020-12-09 06:55:16,446 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand 95 states. [2020-12-09 06:55:57,750 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-12-09 06:55:57,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-09 06:55:57,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2020-12-09 06:55:57,953 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)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 45 more [2020-12-09 06:55:57,961 INFO L168 Benchmark]: Toolchain (without parser) took 415855.97 ms. Allocated memory was 111.1 MB in the beginning and 195.0 MB in the end (delta: 83.9 MB). Free memory was 75.1 MB in the beginning and 57.6 MB in the end (delta: 17.5 MB). Peak memory consumption was 101.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:55:57,961 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 111.1 MB. Free memory is still 91.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:55:57,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.13 ms. Allocated memory is still 111.1 MB. Free memory was 75.0 MB in the beginning and 88.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:55:57,962 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.93 ms. Allocated memory is still 111.1 MB. Free memory was 88.2 MB in the beginning and 87.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:55:57,962 INFO L168 Benchmark]: Boogie Preprocessor took 14.98 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 86.3 MB in the end (delta: 933.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:55:57,962 INFO L168 Benchmark]: RCFGBuilder took 225.27 ms. Allocated memory is still 111.1 MB. Free memory was 85.8 MB in the beginning and 71.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:55:57,963 INFO L168 Benchmark]: TraceAbstraction took 415432.38 ms. Allocated memory was 111.1 MB in the beginning and 195.0 MB in the end (delta: 83.9 MB). Free memory was 71.1 MB in the beginning and 57.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 99.9 MB. Max. memory is 16.1 GB. [2020-12-09 06:55:57,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 111.1 MB. Free memory is still 91.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 155.13 ms. Allocated memory is still 111.1 MB. Free memory was 75.0 MB in the beginning and 88.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.93 ms. Allocated memory is still 111.1 MB. Free memory was 88.2 MB in the beginning and 87.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.98 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 86.3 MB in the end (delta: 933.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 225.27 ms. Allocated memory is still 111.1 MB. Free memory was 85.8 MB in the beginning and 71.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 415432.38 ms. Allocated memory was 111.1 MB in the beginning and 195.0 MB in the end (delta: 83.9 MB). Free memory was 71.1 MB in the beginning and 57.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 99.9 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)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...