./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 168416149267e0fc0b6fcb8e317e7cffdbc0bf70 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:45:49,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:45:49,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:45:49,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:45:49,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:45:49,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:45:49,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:45:49,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:45:49,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:45:49,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:45:49,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:45:49,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:45:49,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:45:49,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:45:49,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:45:49,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:45:49,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:45:49,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:45:49,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:45:49,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:45:49,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:45:49,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:45:49,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:45:49,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:45:49,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:45:49,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:45:49,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:45:49,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:45:49,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:45:49,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:45:49,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:45:49,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:45:49,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:45:49,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:45:49,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:45:49,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:45:49,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:45:49,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:45:49,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:45:49,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:45:49,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:45:49,741 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:45:49,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:45:49,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:45:49,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:45:49,764 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:45:49,764 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:45:49,765 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:45:49,765 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:45:49,765 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:45:49,765 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:45:49,765 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:45:49,765 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:45:49,766 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:45:49,766 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:45:49,766 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:45:49,766 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:45:49,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:45:49,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:45:49,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:45:49,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:45:49,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:45:49,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:45:49,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:45:49,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:45:49,768 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:45:49,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:45:49,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:45:49,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:45:49,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:45:49,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:45:49,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:45:49,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:45:49,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:45:49,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:45:49,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:45:49,770 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:45:49,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:45:49,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:45:49,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:45:49,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:45:49,771 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_a1d50a29-bebb-49f2-b593-cd2799ab17bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 168416149267e0fc0b6fcb8e317e7cffdbc0bf70 [2020-12-09 08:45:49,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:45:49,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:45:49,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:45:49,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:45:49,991 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:45:49,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i [2020-12-09 08:45:50,031 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan/data/411bc1df6/324d9bd5d6fb4518b1a9a627cf8df994/FLAGc067271eb [2020-12-09 08:45:50,388 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:45:50,389 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i [2020-12-09 08:45:50,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan/data/411bc1df6/324d9bd5d6fb4518b1a9a627cf8df994/FLAGc067271eb [2020-12-09 08:45:50,406 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan/data/411bc1df6/324d9bd5d6fb4518b1a9a627cf8df994 [2020-12-09 08:45:50,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:45:50,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:45:50,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:45:50,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:45:50,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:45:50,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:45:50" (1/1) ... [2020-12-09 08:45:50,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428e41c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50, skipping insertion in model container [2020-12-09 08:45:50,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:45:50" (1/1) ... [2020-12-09 08:45:50,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:45:50,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:45:50,559 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_a1d50a29-bebb-49f2-b593-cd2799ab17bc/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i[950,963] [2020-12-09 08:45:50,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:45:50,577 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:45:50,586 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_a1d50a29-bebb-49f2-b593-cd2799ab17bc/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i[950,963] [2020-12-09 08:45:50,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:45:50,602 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:45:50,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50 WrapperNode [2020-12-09 08:45:50,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:45:50,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:45:50,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:45:50,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:45:50,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50" (1/1) ... [2020-12-09 08:45:50,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50" (1/1) ... [2020-12-09 08:45:50,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:45:50,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:45:50,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:45:50,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:45:50,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50" (1/1) ... [2020-12-09 08:45:50,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50" (1/1) ... [2020-12-09 08:45:50,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50" (1/1) ... [2020-12-09 08:45:50,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50" (1/1) ... [2020-12-09 08:45:50,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50" (1/1) ... [2020-12-09 08:45:50,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50" (1/1) ... [2020-12-09 08:45:50,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50" (1/1) ... [2020-12-09 08:45:50,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:45:50,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:45:50,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:45:50,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:45:50,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/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 08:45:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:45:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:45:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:45:50,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:45:50,978 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:45:50,978 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-09 08:45:50,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:45:50 BoogieIcfgContainer [2020-12-09 08:45:50,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:45:50,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:45:50,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:45:50,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:45:50,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:45:50" (1/3) ... [2020-12-09 08:45:50,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d0fb2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:45:50, skipping insertion in model container [2020-12-09 08:45:50,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:50" (2/3) ... [2020-12-09 08:45:50,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d0fb2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:45:50, skipping insertion in model container [2020-12-09 08:45:50,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:45:50" (3/3) ... [2020-12-09 08:45:50,985 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound1.i [2020-12-09 08:45:50,996 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:45:50,998 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 08:45:51,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 08:45:51,021 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:45:51,022 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:45:51,022 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:45:51,022 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:45:51,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:45:51,022 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:45:51,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:45:51,022 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:45:51,031 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-09 08:45:51,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 08:45:51,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:45:51,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 08:45:51,034 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:45:51,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:45:51,038 INFO L82 PathProgramCache]: Analyzing trace with hash -712442551, now seen corresponding path program 1 times [2020-12-09 08:45:51,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:45:51,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622681328] [2020-12-09 08:45:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:45:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:45:51,139 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 08:45:51,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622681328] [2020-12-09 08:45:51,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:45:51,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:45:51,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030568280] [2020-12-09 08:45:51,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 08:45:51,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:45:51,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 08:45:51,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:45:51,154 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-12-09 08:45:51,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:45:51,164 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-12-09 08:45:51,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 08:45:51,165 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 08:45:51,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:45:51,171 INFO L225 Difference]: With dead ends: 28 [2020-12-09 08:45:51,171 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 08:45:51,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:45:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 08:45:51,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-09 08:45:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 08:45:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-12-09 08:45:51,194 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2020-12-09 08:45:51,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:45:51,195 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-12-09 08:45:51,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 08:45:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-12-09 08:45:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 08:45:51,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:45:51,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:45:51,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 08:45:51,195 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:45:51,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:45:51,196 INFO L82 PathProgramCache]: Analyzing trace with hash -994141722, now seen corresponding path program 1 times [2020-12-09 08:45:51,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:45:51,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877960404] [2020-12-09 08:45:51,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:45:51,210 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:45:51,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633780937] [2020-12-09 08:45:51,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/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 08:45:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:45:51,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:45:51,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:45:51,320 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 08:45:51,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:45:51,335 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 08:45:51,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877960404] [2020-12-09 08:45:51,336 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:45:51,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633780937] [2020-12-09 08:45:51,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:45:51,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-09 08:45:51,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399637772] [2020-12-09 08:45:51,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:45:51,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:45:51,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:45:51,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:45:51,339 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 4 states. [2020-12-09 08:45:51,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:45:51,355 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-12-09 08:45:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:45:51,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 08:45:51,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:45:51,357 INFO L225 Difference]: With dead ends: 26 [2020-12-09 08:45:51,357 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 08:45:51,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:45:51,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 08:45:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 08:45:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 08:45:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-12-09 08:45:51,362 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 7 [2020-12-09 08:45:51,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:45:51,362 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-12-09 08:45:51,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:45:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-12-09 08:45:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:45:51,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:45:51,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:45:51,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 08:45:51,564 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:45:51,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:45:51,565 INFO L82 PathProgramCache]: Analyzing trace with hash -704827549, now seen corresponding path program 1 times [2020-12-09 08:45:51,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:45:51,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327123016] [2020-12-09 08:45:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:45:51,582 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:45:51,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325671129] [2020-12-09 08:45:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/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 08:45:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:45:51,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 08:45:51,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:45:51,635 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 08:45:51,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:45:51,648 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 08:45:51,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327123016] [2020-12-09 08:45:51,648 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:45:51,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325671129] [2020-12-09 08:45:51,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:45:51,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-12-09 08:45:51,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426329062] [2020-12-09 08:45:51,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:45:51,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:45:51,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:45:51,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:45:51,650 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 5 states. [2020-12-09 08:45:51,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:45:51,668 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-12-09 08:45:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:45:51,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 08:45:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:45:51,669 INFO L225 Difference]: With dead ends: 22 [2020-12-09 08:45:51,669 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 08:45:51,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:45:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 08:45:51,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 08:45:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 08:45:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-12-09 08:45:51,671 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2020-12-09 08:45:51,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:45:51,671 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-12-09 08:45:51,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:45:51,671 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-12-09 08:45:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 08:45:51,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:45:51,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:45:51,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:45:51,873 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:45:51,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:45:51,875 INFO L82 PathProgramCache]: Analyzing trace with hash -374855193, now seen corresponding path program 1 times [2020-12-09 08:45:51,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:45:51,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630359670] [2020-12-09 08:45:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:45:51,918 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:45:51,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374925106] [2020-12-09 08:45:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/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 08:45:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:45:51,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 08:45:51,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:45:52,073 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 08:45:52,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:45:52,105 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 08:45:52,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630359670] [2020-12-09 08:45:52,106 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:45:52,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374925106] [2020-12-09 08:45:52,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:45:52,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 08:45:52,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671174581] [2020-12-09 08:45:52,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 08:45:52,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:45:52,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 08:45:52,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:45:52,107 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 8 states. [2020-12-09 08:45:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:45:52,286 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-12-09 08:45:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 08:45:52,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-12-09 08:45:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:45:52,287 INFO L225 Difference]: With dead ends: 26 [2020-12-09 08:45:52,287 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 08:45:52,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-09 08:45:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 08:45:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 08:45:52,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 08:45:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-09 08:45:52,290 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9 [2020-12-09 08:45:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:45:52,290 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-09 08:45:52,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 08:45:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-09 08:45:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:45:52,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:45:52,291 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:45:52,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:45:52,493 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:45:52,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:45:52,494 INFO L82 PathProgramCache]: Analyzing trace with hash -148245756, now seen corresponding path program 1 times [2020-12-09 08:45:52,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:45:52,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468130815] [2020-12-09 08:45:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:45:52,546 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:45:52,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647290388] [2020-12-09 08:45:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/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 08:45:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:45:52,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 08:45:52,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:45:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:45:52,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:45:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:45:52,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468130815] [2020-12-09 08:45:52,741 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:45:52,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647290388] [2020-12-09 08:45:52,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1337170228] [2020-12-09 08:45:52,757 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 08:45:52,757 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:45:52,760 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:45:52,764 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:45:52,764 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:45:52,834 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:45:53,094 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:45:53,426 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2020-12-09 08:45:53,806 WARN L197 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2020-12-09 08:45:53,963 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-12-09 08:45:54,126 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2020-12-09 08:45:54,544 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-12-09 08:45:54,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 08:45:54,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4] total 11 [2020-12-09 08:45:54,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802264056] [2020-12-09 08:45:54,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 08:45:54,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:45:54,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 08:45:54,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-09 08:45:54,547 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 9 states. [2020-12-09 08:45:54,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:45:54,626 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-12-09 08:45:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 08:45:54,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-09 08:45:54,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:45:54,627 INFO L225 Difference]: With dead ends: 22 [2020-12-09 08:45:54,627 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 08:45:54,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-09 08:45:54,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 08:45:54,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 08:45:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 08:45:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-09 08:45:54,630 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-12-09 08:45:54,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:45:54,630 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-09 08:45:54,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 08:45:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-09 08:45:54,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 08:45:54,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:45:54,631 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:45:54,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:45:54,832 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:45:54,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:45:54,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1213116071, now seen corresponding path program 1 times [2020-12-09 08:45:54,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:45:54,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33963552] [2020-12-09 08:45:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:45:54,870 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:45:54,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226969913] [2020-12-09 08:45:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:45:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:45:54,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 08:45:54,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:45:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 08:45:54,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:45:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 08:45:54,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33963552] [2020-12-09 08:45:54,945 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:45:54,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226969913] [2020-12-09 08:45:54,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1056417596] [2020-12-09 08:45:54,947 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 08:45:54,947 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:45:54,947 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:45:54,947 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:45:54,947 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:45:54,973 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:45:55,116 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:45:55,443 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2020-12-09 08:45:55,777 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2020-12-09 08:45:55,918 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-12-09 08:45:56,080 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-12-09 08:45:56,464 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-12-09 08:45:56,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 08:45:56,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4] total 11 [2020-12-09 08:45:56,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117151311] [2020-12-09 08:45:56,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 08:45:56,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:45:56,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 08:45:56,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-12-09 08:45:56,466 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2020-12-09 08:45:56,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:45:56,518 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-09 08:45:56,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 08:45:56,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-09 08:45:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:45:56,519 INFO L225 Difference]: With dead ends: 16 [2020-12-09 08:45:56,519 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 08:45:56,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-12-09 08:45:56,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 08:45:56,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 08:45:56,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 08:45:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 08:45:56,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 08:45:56,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:45:56,520 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 08:45:56,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 08:45:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 08:45:56,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 08:45:56,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-09 08:45:56,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 08:45:57,052 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-12-09 08:45:57,055 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-09 08:45:57,055 INFO L262 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-12-09 08:45:57,055 INFO L258 CegarLoopResult]: At program point L19-2(line 42) the Hoare annotation is: false [2020-12-09 08:45:57,055 INFO L262 CegarLoopResult]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2020-12-09 08:45:57,055 INFO L265 CegarLoopResult]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2020-12-09 08:45:57,055 INFO L262 CegarLoopResult]: For program point L40(lines 40 49) no Hoare annotation was computed. [2020-12-09 08:45:57,055 INFO L262 CegarLoopResult]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2020-12-09 08:45:57,055 INFO L262 CegarLoopResult]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2020-12-09 08:45:57,055 INFO L258 CegarLoopResult]: At program point L36-3(lines 36 39) the Hoare annotation is: (let ((.cse20 (mod ULTIMATE.start_main_~B~0 4294967296)) (.cse21 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= |#t~string1.offset| 0)) (.cse1 (= |#NULL.base| 0)) (.cse2 (= (select .cse21 |#t~string0.offset|) 48)) (.cse3 (< .cse20 2147483647)) (.cse4 (= (select .cse21 (+ |#t~string0.offset| 1)) 0)) (.cse5 (= (select |#valid| 0) 0)) (.cse6 (= (select |#length| |#t~string1.base|) 9)) (.cse7 (= 2 (select |#length| |#t~string0.base|))) (.cse8 (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1)) (.cse9 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse10 (<= 1 .cse20)) (.cse11 (= (select |#valid| |#t~string0.base|) 1)) (.cse12 (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond)) (.cse13 (< 0 |#StackHeapBarrier|)) (.cse14 (= ULTIMATE.start_main_~q~0 0)) (.cse15 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse16 (= |#NULL.offset| 0)) (.cse17 (= (select |#valid| |#t~string1.base|) 1)) (.cse18 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse19 (= |#t~string0.offset| 0))) (or (and .cse0 (= ~counter~0 0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and .cse0 (<= .cse20 (mod ULTIMATE.start_main_~r~0 4294967296)) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (= ~counter~0 1) .cse13 .cse14 .cse15 .cse16 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~b~0) .cse17 .cse18 .cse19)))) [2020-12-09 08:45:57,055 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 08:45:57,055 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-09 08:45:57,055 INFO L262 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-12-09 08:45:57,056 INFO L262 CegarLoopResult]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-12-09 08:45:57,056 INFO L262 CegarLoopResult]: For program point L45-2(lines 26 52) no Hoare annotation was computed. [2020-12-09 08:45:57,056 INFO L262 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-12-09 08:45:57,056 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 08:45:57,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:45:57 BoogieIcfgContainer [2020-12-09 08:45:57,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:45:57,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:45:57,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:45:57,072 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:45:57,073 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:45:50" (3/4) ... [2020-12-09 08:45:57,075 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 08:45:57,081 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-09 08:45:57,081 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 08:45:57,081 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 08:45:57,081 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:45:57,097 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((("divbin.c" == 0 && counter == 0) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && B % 4294967296 < 2147483647) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && unknown-#length-unknown["divbin.c"] == 9) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "0") && 1 <= B % 4294967296) && B == b) && \valid["0"] == 1) && \old(cond) == cond) && 0 < unknown-#StackHeapBarrier-unknown) && q == 0) && unknown-#StackHeapBarrier-unknown < "divbin.c") && #NULL == 0) && \valid["divbin.c"] == 1) && A == r) && "0" == 0) || (((((((((((((((((((((("divbin.c" == 0 && B % 4294967296 <= r % 4294967296) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && B % 4294967296 < 2147483647) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && unknown-#length-unknown["divbin.c"] == 9) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "0") && 1 <= B % 4294967296) && \valid["0"] == 1) && \old(cond) == cond) && counter == 1) && 0 < unknown-#StackHeapBarrier-unknown) && q == 0) && unknown-#StackHeapBarrier-unknown < "divbin.c") && #NULL == 0) && B * 2 == b) && \valid["divbin.c"] == 1) && A == r) && "0" == 0) [2020-12-09 08:45:57,109 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a1d50a29-bebb-49f2-b593-cd2799ab17bc/bin/utaipan/witness.graphml [2020-12-09 08:45:57,109 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:45:57,110 INFO L168 Benchmark]: Toolchain (without parser) took 6699.69 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 53.3 MB in the beginning and 91.5 MB in the end (delta: -38.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:45:57,110 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 94.4 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:45:57,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.65 ms. Allocated memory is still 94.4 MB. Free memory was 53.2 MB in the beginning and 67.3 MB in the end (delta: -14.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-09 08:45:57,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.98 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 65.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:45:57,111 INFO L168 Benchmark]: Boogie Preprocessor took 19.46 ms. Allocated memory is still 94.4 MB. Free memory was 65.8 MB in the beginning and 64.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:45:57,111 INFO L168 Benchmark]: RCFGBuilder took 328.68 ms. Allocated memory is still 94.4 MB. Free memory was 64.6 MB in the beginning and 57.2 MB in the end (delta: 7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:45:57,112 INFO L168 Benchmark]: TraceAbstraction took 6091.39 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 56.8 MB in the beginning and 93.6 MB in the end (delta: -36.8 MB). Peak memory consumption was 56.2 MB. Max. memory is 16.1 GB. [2020-12-09 08:45:57,112 INFO L168 Benchmark]: Witness Printer took 36.99 ms. Allocated memory is still 119.5 MB. Free memory was 93.6 MB in the beginning and 91.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:45:57,114 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 94.4 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 191.65 ms. Allocated memory is still 94.4 MB. Free memory was 53.2 MB in the beginning and 67.3 MB in the end (delta: -14.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.98 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 65.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.46 ms. Allocated memory is still 94.4 MB. Free memory was 65.8 MB in the beginning and 64.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 328.68 ms. Allocated memory is still 94.4 MB. Free memory was 64.6 MB in the beginning and 57.2 MB in the end (delta: 7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6091.39 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 56.8 MB in the beginning and 93.6 MB in the end (delta: -36.8 MB). Peak memory consumption was 56.2 MB. Max. memory is 16.1 GB. * Witness Printer took 36.99 ms. Allocated memory is still 119.5 MB. Free memory was 93.6 MB in the beginning and 91.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((((((((((((((("divbin.c" == 0 && counter == 0) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && B % 4294967296 < 2147483647) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && unknown-#length-unknown["divbin.c"] == 9) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "0") && 1 <= B % 4294967296) && B == b) && \valid["0"] == 1) && \old(cond) == cond) && 0 < unknown-#StackHeapBarrier-unknown) && q == 0) && unknown-#StackHeapBarrier-unknown < "divbin.c") && #NULL == 0) && \valid["divbin.c"] == 1) && A == r) && "0" == 0) || (((((((((((((((((((((("divbin.c" == 0 && B % 4294967296 <= r % 4294967296) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && B % 4294967296 < 2147483647) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && unknown-#length-unknown["divbin.c"] == 9) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "0") && 1 <= B % 4294967296) && \valid["0"] == 1) && \old(cond) == cond) && counter == 1) && 0 < unknown-#StackHeapBarrier-unknown) && q == 0) && unknown-#StackHeapBarrier-unknown < "divbin.c") && #NULL == 0) && B * 2 == b) && \valid["divbin.c"] == 1) && A == r) && "0" == 0) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 34 SDslu, 79 SDs, 0 SdLazy, 142 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 194 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 421 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 3309 SizeOfPredicates, 11 NumberOfNonLiveVariables, 315 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 28/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 507, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 18, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 30, TOOLS_POST_TIME[ms]: 236, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 30, TOOLS_QUANTIFIERELIM_TIME[ms]: 227, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 106, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 58, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 95, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 102, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME[ms]: 8, DOMAIN_ISBOTTOM_APPLICATIONS: 18, DOMAIN_ISBOTTOM_TIME[ms]: 27, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 156, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 156, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 152, DAG_COMPRESSION_RETAINED_NODES: 58, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...