./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i --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_9dad6ef7-3212-4e0d-9b4f-e1078705d360/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/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 edd6561cca2d352ad9794df9d30edf5094107348 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/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 07:49:27,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:49:27,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:49:27,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:49:27,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:49:27,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:49:27,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:49:27,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:49:27,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:49:27,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:49:27,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:49:27,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:49:27,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:49:27,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:49:27,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:49:27,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:49:27,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:49:27,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:49:27,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:49:27,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:49:27,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:49:27,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:49:27,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:49:27,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:49:27,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:49:27,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:49:27,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:49:27,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:49:27,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:49:27,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:49:27,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:49:27,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:49:27,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:49:27,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:49:27,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:49:27,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:49:27,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:49:27,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:49:27,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:49:27,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:49:27,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:49:27,613 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-09 07:49:27,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:49:27,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:49:27,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:49:27,636 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:49:27,636 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:49:27,637 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:49:27,637 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:49:27,637 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:49:27,637 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:49:27,637 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:49:27,637 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:49:27,638 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:49:27,638 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:49:27,638 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:49:27,638 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:49:27,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:49:27,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:49:27,639 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 07:49:27,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:49:27,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:49:27,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:49:27,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:49:27,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:49:27,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:49:27,641 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 07:49:27,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:49:27,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:49:27,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:49:27,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:49:27,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:49:27,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:49:27,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:49:27,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:49:27,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:49:27,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:49:27,643 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:49:27,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:49:27,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:49:27,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:49:27,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:49:27,643 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_9dad6ef7-3212-4e0d-9b4f-e1078705d360/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edd6561cca2d352ad9794df9d30edf5094107348 [2020-12-09 07:49:27,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:49:27,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:49:27,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:49:27,834 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:49:27,835 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:49:27,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i [2020-12-09 07:49:27,876 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/bin/utaipan/data/30bfb3966/0e671bd63fc64622817e9bbd3c31f0ca/FLAGf6a203114 [2020-12-09 07:49:28,238 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:49:28,239 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i [2020-12-09 07:49:28,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/bin/utaipan/data/30bfb3966/0e671bd63fc64622817e9bbd3c31f0ca/FLAGf6a203114 [2020-12-09 07:49:28,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/bin/utaipan/data/30bfb3966/0e671bd63fc64622817e9bbd3c31f0ca [2020-12-09 07:49:28,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:49:28,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:49:28,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:49:28,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:49:28,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:49:28,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:49:28" (1/1) ... [2020-12-09 07:49:28,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@239e3d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28, skipping insertion in model container [2020-12-09 07:49:28,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:49:28" (1/1) ... [2020-12-09 07:49:28,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:49:28,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:49:28,368 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_9dad6ef7-3212-4e0d-9b4f-e1078705d360/sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i[873,886] [2020-12-09 07:49:28,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:49:28,380 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:49:28,388 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_9dad6ef7-3212-4e0d-9b4f-e1078705d360/sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i[873,886] [2020-12-09 07:49:28,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:49:28,400 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:49:28,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28 WrapperNode [2020-12-09 07:49:28,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:49:28,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:49:28,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:49:28,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:49:28,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28" (1/1) ... [2020-12-09 07:49:28,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28" (1/1) ... [2020-12-09 07:49:28,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:49:28,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:49:28,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:49:28,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:49:28,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28" (1/1) ... [2020-12-09 07:49:28,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28" (1/1) ... [2020-12-09 07:49:28,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28" (1/1) ... [2020-12-09 07:49:28,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28" (1/1) ... [2020-12-09 07:49:28,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28" (1/1) ... [2020-12-09 07:49:28,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28" (1/1) ... [2020-12-09 07:49:28,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28" (1/1) ... [2020-12-09 07:49:28,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:49:28,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:49:28,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:49:28,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:49:28,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/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 07:49:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:49:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:49:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:49:28,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:49:28,655 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:49:28,656 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 07:49:28,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:49:28 BoogieIcfgContainer [2020-12-09 07:49:28,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:49:28,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:49:28,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:49:28,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:49:28,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:49:28" (1/3) ... [2020-12-09 07:49:28,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5636d89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:49:28, skipping insertion in model container [2020-12-09 07:49:28,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:49:28" (2/3) ... [2020-12-09 07:49:28,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5636d89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:49:28, skipping insertion in model container [2020-12-09 07:49:28,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:49:28" (3/3) ... [2020-12-09 07:49:28,663 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark10_conjunctive.i [2020-12-09 07:49:28,673 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:49:28,675 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 07:49:28,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 07:49:28,700 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:49:28,700 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:49:28,700 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:49:28,700 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:49:28,700 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:49:28,701 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:49:28,701 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:49:28,701 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:49:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-09 07:49:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 07:49:28,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:49:28,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 07:49:28,714 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:49:28,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:49:28,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2241565, now seen corresponding path program 1 times [2020-12-09 07:49:28,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:49:28,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718666455] [2020-12-09 07:49:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:49:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:49:28,841 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 07:49:28,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718666455] [2020-12-09 07:49:28,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:49:28,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:49:28,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748353691] [2020-12-09 07:49:28,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:49:28,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:49:28,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:49:28,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:49:28,863 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-12-09 07:49:28,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:49:28,915 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-12-09 07:49:28,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:49:28,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 07:49:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:49:28,922 INFO L225 Difference]: With dead ends: 22 [2020-12-09 07:49:28,923 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 07:49:28,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:49:28,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 07:49:28,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-12-09 07:49:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 07:49:28,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-12-09 07:49:28,948 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2020-12-09 07:49:28,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:49:28,949 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-12-09 07:49:28,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:49:28,949 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-12-09 07:49:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:49:28,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:49:28,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:49:28,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:49:28,950 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:49:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:49:28,951 INFO L82 PathProgramCache]: Analyzing trace with hash 69488565, now seen corresponding path program 1 times [2020-12-09 07:49:28,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:49:28,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360539560] [2020-12-09 07:49:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:49:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:49:28,976 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 07:49:28,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360539560] [2020-12-09 07:49:28,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:49:28,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:49:28,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693683066] [2020-12-09 07:49:28,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:49:28,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:49:28,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:49:28,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:49:28,979 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2020-12-09 07:49:28,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:49:28,997 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-09 07:49:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:49:28,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 07:49:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:49:28,998 INFO L225 Difference]: With dead ends: 16 [2020-12-09 07:49:28,998 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 07:49:28,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:49:29,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 07:49:29,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 07:49:29,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 07:49:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 07:49:29,002 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2020-12-09 07:49:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:49:29,002 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 07:49:29,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:49:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 07:49:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:49:29,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:49:29,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:49:29,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:49:29,003 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:49:29,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:49:29,004 INFO L82 PathProgramCache]: Analyzing trace with hash -2140821729, now seen corresponding path program 1 times [2020-12-09 07:49:29,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:49:29,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107700822] [2020-12-09 07:49:29,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:49:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:49:29,027 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 07:49:29,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107700822] [2020-12-09 07:49:29,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:49:29,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:49:29,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029300351] [2020-12-09 07:49:29,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:49:29,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:49:29,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:49:29,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:49:29,029 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2020-12-09 07:49:29,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:49:29,048 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-12-09 07:49:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:49:29,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 07:49:29,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:49:29,050 INFO L225 Difference]: With dead ends: 18 [2020-12-09 07:49:29,050 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 07:49:29,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:49:29,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 07:49:29,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-12-09 07:49:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 07:49:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-09 07:49:29,053 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2020-12-09 07:49:29,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:49:29,054 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-09 07:49:29,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:49:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-09 07:49:29,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 07:49:29,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:49:29,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:49:29,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 07:49:29,055 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:49:29,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:49:29,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1940964105, now seen corresponding path program 1 times [2020-12-09 07:49:29,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:49:29,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860979010] [2020-12-09 07:49:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:49:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:49:29,086 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 07:49:29,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860979010] [2020-12-09 07:49:29,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:49:29,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 07:49:29,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536741586] [2020-12-09 07:49:29,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:49:29,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:49:29,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:49:29,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:49:29,089 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-12-09 07:49:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:49:29,104 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-09 07:49:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:49:29,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 07:49:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:49:29,105 INFO L225 Difference]: With dead ends: 16 [2020-12-09 07:49:29,106 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 07:49:29,106 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 07:49:29,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 07:49:29,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 07:49:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 07:49:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 07:49:29,109 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2020-12-09 07:49:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:49:29,110 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 07:49:29,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:49:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 07:49:29,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 07:49:29,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:49:29,110 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:49:29,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 07:49:29,111 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:49:29,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:49:29,112 INFO L82 PathProgramCache]: Analyzing trace with hash -116887834, now seen corresponding path program 1 times [2020-12-09 07:49:29,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:49:29,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102078828] [2020-12-09 07:49:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:49:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:49:29,158 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 07:49:29,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102078828] [2020-12-09 07:49:29,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099382281] [2020-12-09 07:49:29,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/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 07:49:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:49:29,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 07:49:29,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:49:29,254 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 07:49:29,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:49:29,299 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 07:49:29,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1861582671] [2020-12-09 07:49:29,320 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 07:49:29,320 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:49:29,324 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:49:29,329 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:49:29,330 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:49:29,714 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:49:30,175 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-12-09 07:49:30,422 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-12-09 07:49:30,603 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2020-12-09 07:49:30,732 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:49:30,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:49:30,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2020-12-09 07:49:30,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786821098] [2020-12-09 07:49:30,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 07:49:30,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:49:30,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 07:49:30,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-12-09 07:49:30,734 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 11 states. [2020-12-09 07:49:30,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:49:30,863 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-12-09 07:49:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 07:49:30,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-12-09 07:49:30,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:49:30,864 INFO L225 Difference]: With dead ends: 30 [2020-12-09 07:49:30,864 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 07:49:30,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2020-12-09 07:49:30,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 07:49:30,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-12-09 07:49:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 07:49:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-12-09 07:49:30,873 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 10 [2020-12-09 07:49:30,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:49:30,873 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-12-09 07:49:30,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 07:49:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-12-09 07:49:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 07:49:30,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:49:30,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:49:31,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:49:31,076 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:49:31,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:49:31,078 INFO L82 PathProgramCache]: Analyzing trace with hash 671444492, now seen corresponding path program 1 times [2020-12-09 07:49:31,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:49:31,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213560225] [2020-12-09 07:49:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:49:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:49:31,184 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 07:49:31,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213560225] [2020-12-09 07:49:31,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:49:31,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:49:31,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23307686] [2020-12-09 07:49:31,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:49:31,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:49:31,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:49:31,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:49:31,189 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-12-09 07:49:31,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:49:31,240 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-12-09 07:49:31,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:49:31,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 07:49:31,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:49:31,240 INFO L225 Difference]: With dead ends: 25 [2020-12-09 07:49:31,240 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 07:49:31,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:49:31,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 07:49:31,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-09 07:49:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-09 07:49:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-12-09 07:49:31,243 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2020-12-09 07:49:31,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:49:31,243 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-12-09 07:49:31,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:49:31,243 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-12-09 07:49:31,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 07:49:31,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:49:31,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-09 07:49:31,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-09 07:49:31,244 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:49:31,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:49:31,244 INFO L82 PathProgramCache]: Analyzing trace with hash -660057176, now seen corresponding path program 1 times [2020-12-09 07:49:31,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:49:31,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030629739] [2020-12-09 07:49:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:49:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:49:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 07:49:31,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030629739] [2020-12-09 07:49:31,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:49:31,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:49:31,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795651185] [2020-12-09 07:49:31,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:49:31,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:49:31,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:49:31,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:49:31,259 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2020-12-09 07:49:31,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:49:31,269 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-12-09 07:49:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:49:31,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-09 07:49:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:49:31,269 INFO L225 Difference]: With dead ends: 24 [2020-12-09 07:49:31,269 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 07:49:31,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:49:31,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 07:49:31,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 07:49:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 07:49:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-09 07:49:31,272 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 12 [2020-12-09 07:49:31,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:49:31,272 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-09 07:49:31,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:49:31,272 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-09 07:49:31,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 07:49:31,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:49:31,273 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1] [2020-12-09 07:49:31,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-09 07:49:31,273 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:49:31,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:49:31,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1545665480, now seen corresponding path program 2 times [2020-12-09 07:49:31,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:49:31,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892864652] [2020-12-09 07:49:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:49:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:49:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:49:31,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892864652] [2020-12-09 07:49:31,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992108613] [2020-12-09 07:49:31,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/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 07:49:31,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-09 07:49:31,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 07:49:31,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 07:49:31,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:49:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:49:31,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:49:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:49:31,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [614801878] [2020-12-09 07:49:31,504 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 07:49:31,504 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:49:31,504 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:49:31,504 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:49:31,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:49:31,689 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:49:32,098 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-12-09 07:49:32,290 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-12-09 07:49:32,472 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2020-12-09 07:49:32,608 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:49:32,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:49:32,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2020-12-09 07:49:32,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018040273] [2020-12-09 07:49:32,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-09 07:49:32,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:49:32,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-09 07:49:32,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2020-12-09 07:49:32,610 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 18 states. [2020-12-09 07:49:32,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:49:32,882 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-12-09 07:49:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-09 07:49:32,882 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2020-12-09 07:49:32,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:49:32,883 INFO L225 Difference]: With dead ends: 49 [2020-12-09 07:49:32,883 INFO L226 Difference]: Without dead ends: 48 [2020-12-09 07:49:32,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=375, Invalid=1265, Unknown=0, NotChecked=0, Total=1640 [2020-12-09 07:49:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-09 07:49:32,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-12-09 07:49:32,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-09 07:49:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-12-09 07:49:32,887 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 22 [2020-12-09 07:49:32,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:49:32,888 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-12-09 07:49:32,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-09 07:49:32,888 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-12-09 07:49:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-09 07:49:32,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:49:32,889 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1] [2020-12-09 07:49:33,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-09 07:49:33,091 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:49:33,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:49:33,092 INFO L82 PathProgramCache]: Analyzing trace with hash -476680740, now seen corresponding path program 3 times [2020-12-09 07:49:33,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:49:33,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518183301] [2020-12-09 07:49:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:49:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:49:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:49:33,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518183301] [2020-12-09 07:49:33,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439349068] [2020-12-09 07:49:33,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/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 07:49:33,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 07:49:33,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 07:49:33,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 07:49:33,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:49:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:49:33,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:49:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:49:35,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1657392466] [2020-12-09 07:49:35,612 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 07:49:35,612 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:49:35,612 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:49:35,613 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:49:35,613 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:49:35,798 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:49:36,239 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-12-09 07:49:36,469 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-12-09 07:49:36,700 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2020-12-09 07:49:36,857 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:49:36,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:49:36,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2020-12-09 07:49:36,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811529762] [2020-12-09 07:49:36,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-12-09 07:49:36,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:49:36,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-12-09 07:49:36,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2056, Unknown=1, NotChecked=0, Total=2450 [2020-12-09 07:49:36,859 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 42 states. [2020-12-09 07:49:45,026 WARN L197 SmtUtils]: Spent 6.83 s on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-09 07:50:00,076 WARN L197 SmtUtils]: Spent 9.31 s on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-12-09 07:50:12,991 WARN L197 SmtUtils]: Spent 6.98 s on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-09 07:50:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:50:15,510 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2020-12-09 07:50:15,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-09 07:50:15,510 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 46 [2020-12-09 07:50:15,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:50:15,511 INFO L225 Difference]: With dead ends: 96 [2020-12-09 07:50:15,511 INFO L226 Difference]: Without dead ends: 95 [2020-12-09 07:50:15,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=2120, Invalid=6621, Unknown=1, NotChecked=0, Total=8742 [2020-12-09 07:50:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-09 07:50:15,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-12-09 07:50:15,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-09 07:50:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-12-09 07:50:15,520 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 46 [2020-12-09 07:50:15,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:50:15,520 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-12-09 07:50:15,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-12-09 07:50:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-12-09 07:50:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-09 07:50:15,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:50:15,523 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 1, 1, 1] [2020-12-09 07:50:15,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-12-09 07:50:15,724 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:50:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:50:15,726 INFO L82 PathProgramCache]: Analyzing trace with hash 651967780, now seen corresponding path program 4 times [2020-12-09 07:50:15,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:50:15,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823455834] [2020-12-09 07:50:15,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:50:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:50:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:50:16,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823455834] [2020-12-09 07:50:16,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481169929] [2020-12-09 07:50:16,221 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dad6ef7-3212-4e0d-9b4f-e1078705d360/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 07:50:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:50:16,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-09 07:50:16,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:50:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:50:17,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:57:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 630 refuted. 30 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:57:17,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1627927637] [2020-12-09 07:57:17,910 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 07:57:17,910 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:57:17,910 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:57:17,911 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:57:17,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:57:18,106 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:57:18,578 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 30 [2020-12-09 07:57:19,003 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-12-09 07:57:19,882 WARN L197 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-12-09 07:57:20,749 WARN L197 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-12-09 07:57:21,637 WARN L197 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2020-12-09 07:57:22,396 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:57:22,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:57:22,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 93 [2020-12-09 07:57:22,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566183645] [2020-12-09 07:57:22,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-12-09 07:57:22,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:57:22,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-12-09 07:57:22,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1530, Invalid=8615, Unknown=157, NotChecked=0, Total=10302 [2020-12-09 07:57:22,402 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2020-12-09 08:00:31,875 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-12-09 08:00:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-12-09 08:00:32,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:00:32,078 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.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:135) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) 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) ... 52 more [2020-12-09 08:00:32,087 INFO L168 Benchmark]: Toolchain (without parser) took 663829.85 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 62.8 MB in the beginning and 56.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 92.7 MB. Max. memory is 16.1 GB. [2020-12-09 08:00:32,089 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 83.9 MB. Free memory is still 58.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:00:32,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 144.78 ms. Allocated memory is still 83.9 MB. Free memory was 62.6 MB in the beginning and 53.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:00:32,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.87 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 51.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:00:32,093 INFO L168 Benchmark]: Boogie Preprocessor took 13.13 ms. Allocated memory is still 83.9 MB. Free memory was 51.9 MB in the beginning and 50.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:00:32,094 INFO L168 Benchmark]: RCFGBuilder took 219.85 ms. Allocated memory is still 83.9 MB. Free memory was 50.8 MB in the beginning and 51.1 MB in the end (delta: -347.5 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 08:00:32,096 INFO L168 Benchmark]: TraceAbstraction took 663426.33 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 50.8 MB in the beginning and 56.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 83.0 MB. Max. memory is 16.1 GB. [2020-12-09 08:00:32,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 83.9 MB. Free memory is still 58.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 144.78 ms. Allocated memory is still 83.9 MB. Free memory was 62.6 MB in the beginning and 53.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.87 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 51.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.13 ms. Allocated memory is still 83.9 MB. Free memory was 51.9 MB in the beginning and 50.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 219.85 ms. Allocated memory is still 83.9 MB. Free memory was 50.8 MB in the beginning and 51.1 MB in the end (delta: -347.5 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 663426.33 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 50.8 MB in the beginning and 56.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 83.0 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...