./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c --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_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/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 149c8585f8a0507ccdc7ff098e5c95b93f9a1ba8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:02:10,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:02:10,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:02:10,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:02:10,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:02:10,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:02:10,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:02:10,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:02:10,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:02:10,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:02:10,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:02:10,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:02:10,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:02:10,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:02:10,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:02:10,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:02:10,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:02:10,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:02:10,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:02:10,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:02:10,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:02:10,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:02:10,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:02:10,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:02:10,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:02:10,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:02:10,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:02:10,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:02:10,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:02:10,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:02:10,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:02:10,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:02:10,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:02:10,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:02:10,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:02:10,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:02:10,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:02:10,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:02:10,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:02:10,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:02:10,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:02:10,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:02:10,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:02:10,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:02:10,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:02:10,784 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:02:10,784 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:02:10,784 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:02:10,784 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:02:10,784 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:02:10,785 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:02:10,785 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:02:10,785 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:02:10,785 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:02:10,785 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:02:10,785 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:02:10,786 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:02:10,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:02:10,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:02:10,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:02:10,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:02:10,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:02:10,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:02:10,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:02:10,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:02:10,788 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:02:10,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:02:10,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:02:10,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:02:10,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:02:10,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:02:10,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:02:10,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:02:10,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:02:10,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:02:10,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:02:10,790 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:02:10,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:02:10,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:02:10,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:02:10,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:02:10,790 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_c8c1efb3-39d2-40fb-a96b-620c149409f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 149c8585f8a0507ccdc7ff098e5c95b93f9a1ba8 [2020-12-09 05:02:10,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:02:10,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:02:10,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:02:10,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:02:10,979 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:02:10,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2020-12-09 05:02:11,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/data/c827e4981/66349d8793ee4a02abab65da2bd136c3/FLAG1c3dcb655 [2020-12-09 05:02:11,395 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:02:11,395 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2020-12-09 05:02:11,400 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/data/c827e4981/66349d8793ee4a02abab65da2bd136c3/FLAG1c3dcb655 [2020-12-09 05:02:11,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/data/c827e4981/66349d8793ee4a02abab65da2bd136c3 [2020-12-09 05:02:11,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:02:11,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:02:11,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:02:11,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:02:11,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:02:11,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:02:11" (1/1) ... [2020-12-09 05:02:11,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3e1b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11, skipping insertion in model container [2020-12-09 05:02:11,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:02:11" (1/1) ... [2020-12-09 05:02:11,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:02:11,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:02:11,531 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_c8c1efb3-39d2-40fb-a96b-620c149409f5/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] [2020-12-09 05:02:11,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:02:11,560 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:02:11,569 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_c8c1efb3-39d2-40fb-a96b-620c149409f5/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] [2020-12-09 05:02:11,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:02:11,586 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:02:11,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11 WrapperNode [2020-12-09 05:02:11,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:02:11,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:02:11,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:02:11,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:02:11,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11" (1/1) ... [2020-12-09 05:02:11,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11" (1/1) ... [2020-12-09 05:02:11,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:02:11,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:02:11,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:02:11,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:02:11,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11" (1/1) ... [2020-12-09 05:02:11,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11" (1/1) ... [2020-12-09 05:02:11,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11" (1/1) ... [2020-12-09 05:02:11,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11" (1/1) ... [2020-12-09 05:02:11,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11" (1/1) ... [2020-12-09 05:02:11,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11" (1/1) ... [2020-12-09 05:02:11,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11" (1/1) ... [2020-12-09 05:02:11,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:02:11,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:02:11,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:02:11,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:02:11,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/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 05:02:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:02:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:02:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:02:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:02:12,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:02:12,013 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-09 05:02:12,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:02:12 BoogieIcfgContainer [2020-12-09 05:02:12,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:02:12,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:02:12,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:02:12,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:02:12,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:02:11" (1/3) ... [2020-12-09 05:02:12,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ef5e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:02:12, skipping insertion in model container [2020-12-09 05:02:12,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:02:11" (2/3) ... [2020-12-09 05:02:12,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ef5e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:02:12, skipping insertion in model container [2020-12-09 05:02:12,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:02:12" (3/3) ... [2020-12-09 05:02:12,021 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound2.c [2020-12-09 05:02:12,032 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:02:12,034 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 05:02:12,042 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 05:02:12,059 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:02:12,059 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:02:12,059 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:02:12,059 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:02:12,059 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:02:12,060 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:02:12,060 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:02:12,060 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:02:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-09 05:02:12,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 05:02:12,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:02:12,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 05:02:12,076 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:02:12,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:02:12,080 INFO L82 PathProgramCache]: Analyzing trace with hash 169560536, now seen corresponding path program 1 times [2020-12-09 05:02:12,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:02:12,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246149346] [2020-12-09 05:02:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:02:12,144 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:02:12,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743713575] [2020-12-09 05:02:12,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/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 05:02:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:02:12,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 05:02:12,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:02:12,220 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 05:02:12,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:02:12,230 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 05:02:12,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246149346] [2020-12-09 05:02:12,231 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:02:12,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743713575] [2020-12-09 05:02:12,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:02:12,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 05:02:12,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378294154] [2020-12-09 05:02:12,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:02:12,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:02:12,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:02:12,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:02:12,246 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-09 05:02:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:02:12,258 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2020-12-09 05:02:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:02:12,259 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 05:02:12,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:02:12,265 INFO L225 Difference]: With dead ends: 65 [2020-12-09 05:02:12,265 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 05:02:12,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 05:02:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 05:02:12,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-09 05:02:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 05:02:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-12-09 05:02:12,291 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 5 [2020-12-09 05:02:12,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:02:12,292 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-12-09 05:02:12,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:02:12,292 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-12-09 05:02:12,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 05:02:12,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:02:12,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 05:02:12,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 05:02:12,494 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:02:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:02:12,494 INFO L82 PathProgramCache]: Analyzing trace with hash 890891193, now seen corresponding path program 1 times [2020-12-09 05:02:12,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:02:12,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869531012] [2020-12-09 05:02:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:02:12,504 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:02:12,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834882747] [2020-12-09 05:02:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/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 05:02:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:02:12,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 05:02:12,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:02:12,646 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 05:02:12,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:02:12,662 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 05:02:12,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869531012] [2020-12-09 05:02:12,662 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:02:12,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834882747] [2020-12-09 05:02:12,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:02:12,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 05:02:12,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310751745] [2020-12-09 05:02:12,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:02:12,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:02:12,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:02:12,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:02:12,664 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-12-09 05:02:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:02:12,691 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-12-09 05:02:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:02:12,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-12-09 05:02:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:02:12,692 INFO L225 Difference]: With dead ends: 51 [2020-12-09 05:02:12,692 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 05:02:12,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:02:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 05:02:12,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2020-12-09 05:02:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 05:02:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-12-09 05:02:12,697 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 6 [2020-12-09 05:02:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:02:12,698 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-12-09 05:02:12,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:02:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-12-09 05:02:12,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:02:12,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:02:12,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:02:12,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:02:12,900 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:02:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:02:12,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1847641631, now seen corresponding path program 1 times [2020-12-09 05:02:12,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:02:12,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864711635] [2020-12-09 05:02:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:02:12,916 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:02:12,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655969132] [2020-12-09 05:02:12,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/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 05:02:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:02:12,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 05:02:12,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:02:12,979 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 05:02:12,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:02:12,984 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 05:02:12,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864711635] [2020-12-09 05:02:12,985 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:02:12,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655969132] [2020-12-09 05:02:12,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:02:12,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 05:02:12,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233462116] [2020-12-09 05:02:12,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:02:12,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:02:12,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:02:12,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:02:12,986 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 3 states. [2020-12-09 05:02:13,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:02:13,008 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-12-09 05:02:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:02:13,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 05:02:13,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:02:13,009 INFO L225 Difference]: With dead ends: 61 [2020-12-09 05:02:13,009 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 05:02:13,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:02:13,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 05:02:13,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2020-12-09 05:02:13,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-09 05:02:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-12-09 05:02:13,013 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 7 [2020-12-09 05:02:13,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:02:13,013 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-12-09 05:02:13,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:02:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-12-09 05:02:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 05:02:13,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:02:13,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:02:13,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:02:13,215 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:02:13,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:02:13,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1442287066, now seen corresponding path program 1 times [2020-12-09 05:02:13,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:02:13,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927282022] [2020-12-09 05:02:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:02:13,230 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:02:13,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442855049] [2020-12-09 05:02:13,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/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 05:02:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:02:13,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 05:02:13,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:02:13,320 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 05:02:13,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:02:13,346 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 05:02:13,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927282022] [2020-12-09 05:02:13,346 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:02:13,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442855049] [2020-12-09 05:02:13,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:02:13,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 05:02:13,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873505951] [2020-12-09 05:02:13,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 05:02:13,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:02:13,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 05:02:13,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:02:13,349 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 7 states. [2020-12-09 05:02:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:02:13,488 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2020-12-09 05:02:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 05:02:13,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-12-09 05:02:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:02:13,489 INFO L225 Difference]: With dead ends: 76 [2020-12-09 05:02:13,489 INFO L226 Difference]: Without dead ends: 74 [2020-12-09 05:02:13,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-12-09 05:02:13,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-09 05:02:13,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 32. [2020-12-09 05:02:13,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 05:02:13,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-12-09 05:02:13,495 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 8 [2020-12-09 05:02:13,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:02:13,495 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-12-09 05:02:13,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 05:02:13,495 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-12-09 05:02:13,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:02:13,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:02:13,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:02:13,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:02:13,697 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:02:13,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:02:13,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1236409283, now seen corresponding path program 1 times [2020-12-09 05:02:13,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:02:13,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653634539] [2020-12-09 05:02:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:02:13,710 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:02:13,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307864185] [2020-12-09 05:02:13,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/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 05:02:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:02:13,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 05:02:13,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:02:13,853 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 05:02:13,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:02:13,872 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 05:02:13,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653634539] [2020-12-09 05:02:13,872 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:02:13,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307864185] [2020-12-09 05:02:13,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:02:13,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 05:02:13,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294154323] [2020-12-09 05:02:13,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:02:13,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:02:13,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:02:13,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:02:13,874 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2020-12-09 05:02:13,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:02:13,944 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-12-09 05:02:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:02:13,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 05:02:13,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:02:13,946 INFO L225 Difference]: With dead ends: 59 [2020-12-09 05:02:13,946 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 05:02:13,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:02:13,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 05:02:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-12-09 05:02:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-09 05:02:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-12-09 05:02:13,955 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 10 [2020-12-09 05:02:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:02:13,955 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-12-09 05:02:13,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:02:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-12-09 05:02:13,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:02:13,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:02:13,956 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:02:14,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:02:14,157 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:02:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:02:14,159 INFO L82 PathProgramCache]: Analyzing trace with hash 971784697, now seen corresponding path program 1 times [2020-12-09 05:02:14,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:02:14,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712367237] [2020-12-09 05:02:14,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:02:14,172 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:02:14,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141264922] [2020-12-09 05:02:14,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:02:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:02:14,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:02:14,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:02:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:02:14,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:02:14,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:02:14,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712367237] [2020-12-09 05:02:14,275 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:02:14,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141264922] [2020-12-09 05:02:14,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:02:14,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-12-09 05:02:14,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120716305] [2020-12-09 05:02:14,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:02:14,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:02:14,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:02:14,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:02:14,277 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-12-09 05:02:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:02:14,297 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-12-09 05:02:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:02:14,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 05:02:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:02:14,299 INFO L225 Difference]: With dead ends: 72 [2020-12-09 05:02:14,299 INFO L226 Difference]: Without dead ends: 44 [2020-12-09 05:02:14,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:02:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-09 05:02:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-12-09 05:02:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-09 05:02:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-12-09 05:02:14,307 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 12 [2020-12-09 05:02:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:02:14,307 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-12-09 05:02:14,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:02:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-12-09 05:02:14,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:02:14,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:02:14,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:02:14,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:02:14,510 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:02:14,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:02:14,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1516777280, now seen corresponding path program 1 times [2020-12-09 05:02:14,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:02:14,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594514384] [2020-12-09 05:02:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:02:14,521 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:02:14,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959558827] [2020-12-09 05:02:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:02:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:02:14,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 05:02:14,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:02:14,621 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 05:02:14,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:02:14,641 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 05:02:14,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594514384] [2020-12-09 05:02:14,641 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:02:14,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959558827] [2020-12-09 05:02:14,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:02:14,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 05:02:14,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455425741] [2020-12-09 05:02:14,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:02:14,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:02:14,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:02:14,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:02:14,643 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 6 states. [2020-12-09 05:02:14,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:02:14,717 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-12-09 05:02:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:02:14,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 05:02:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:02:14,718 INFO L225 Difference]: With dead ends: 49 [2020-12-09 05:02:14,718 INFO L226 Difference]: Without dead ends: 47 [2020-12-09 05:02:14,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:02:14,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-09 05:02:14,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-09 05:02:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-09 05:02:14,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-12-09 05:02:14,723 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 12 [2020-12-09 05:02:14,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:02:14,723 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-12-09 05:02:14,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:02:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-12-09 05:02:14,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 05:02:14,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:02:14,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:02:14,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:02:14,926 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:02:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:02:14,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1629210339, now seen corresponding path program 1 times [2020-12-09 05:02:14,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:02:14,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504873414] [2020-12-09 05:02:14,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:02:14,939 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:02:14,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823128609] [2020-12-09 05:02:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:02:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:02:15,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 05:02:15,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:02:17,050 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 05:02:21,129 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2020-12-09 05:02:21,141 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 05:02:21,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:02:21,165 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 2, 1] term [2020-12-09 05:02:21,165 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 05:02:21,204 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 05:02:21,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504873414] [2020-12-09 05:02:21,204 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:02:21,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823128609] [2020-12-09 05:02:21,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:02:21,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 05:02:21,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391898400] [2020-12-09 05:02:21,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 05:02:21,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:02:21,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 05:02:21,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:02:21,206 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 8 states. [2020-12-09 05:02:21,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:02:21,207 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-12-09 05:02:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:02:21,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-09 05:02:21,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:02:21,208 INFO L225 Difference]: With dead ends: 44 [2020-12-09 05:02:21,208 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:02:21,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:02:21,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:02:21,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:02:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:02:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:02:21,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-12-09 05:02:21,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:02:21,209 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:02:21,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 05:02:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:02:21,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:02:21,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-09 05:02:21,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 05:02:21,468 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 05:02:21,468 INFO L262 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-12-09 05:02:21,469 INFO L258 CegarLoopResult]: At program point L11-2(lines 10 16) the Hoare annotation is: false [2020-12-09 05:02:21,469 INFO L262 CegarLoopResult]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2020-12-09 05:02:21,469 INFO L258 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2020-12-09 05:02:21,469 INFO L262 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-12-09 05:02:21,469 INFO L258 CegarLoopResult]: At program point L11-8(lines 10 16) the Hoare annotation is: false [2020-12-09 05:02:21,469 INFO L262 CegarLoopResult]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2020-12-09 05:02:21,469 INFO L258 CegarLoopResult]: At program point L11-11(lines 51 52) the Hoare annotation is: false [2020-12-09 05:02:21,469 INFO L262 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-12-09 05:02:21,469 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 05:02:21,470 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 05:02:21,470 INFO L258 CegarLoopResult]: At program point L11-14(lines 10 16) the Hoare annotation is: false [2020-12-09 05:02:21,475 INFO L262 CegarLoopResult]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2020-12-09 05:02:21,475 INFO L265 CegarLoopResult]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2020-12-09 05:02:21,476 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-12-09 05:02:21,476 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-12-09 05:02:21,476 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-12-09 05:02:21,476 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-12-09 05:02:21,476 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-12-09 05:02:21,476 INFO L262 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-12-09 05:02:21,476 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 05:02:21,476 INFO L262 CegarLoopResult]: For program point L46-1(lines 46 55) no Hoare annotation was computed. [2020-12-09 05:02:21,476 INFO L258 CegarLoopResult]: At program point L46-3(lines 46 55) the Hoare annotation is: false [2020-12-09 05:02:21,476 INFO L262 CegarLoopResult]: For program point L46-4(lines 46 55) no Hoare annotation was computed. [2020-12-09 05:02:21,476 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 05:02:21,476 INFO L262 CegarLoopResult]: For program point L40(lines 40 67) no Hoare annotation was computed. [2020-12-09 05:02:21,477 INFO L258 CegarLoopResult]: At program point L40-2(lines 7 67) the Hoare annotation is: false [2020-12-09 05:02:21,477 INFO L262 CegarLoopResult]: For program point L40-3(lines 40 67) no Hoare annotation was computed. [2020-12-09 05:02:21,477 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 05:02:21,477 INFO L262 CegarLoopResult]: For program point L41(lines 41 42) no Hoare annotation was computed. [2020-12-09 05:02:21,477 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 05:02:21,477 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 05:02:21,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:02:21 BoogieIcfgContainer [2020-12-09 05:02:21,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:02:21,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:02:21,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:02:21,485 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:02:21,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:02:12" (3/4) ... [2020-12-09 05:02:21,487 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:02:21,494 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-12-09 05:02:21,494 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 05:02:21,494 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 05:02:21,494 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:02:21,528 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c8c1efb3-39d2-40fb-a96b-620c149409f5/bin/utaipan/witness.graphml [2020-12-09 05:02:21,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:02:21,529 INFO L168 Benchmark]: Toolchain (without parser) took 10116.41 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 64.3 MB in the beginning and 99.4 MB in the end (delta: -35.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:02:21,529 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 104.9 MB. Free memory is still 80.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:02:21,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.72 ms. Allocated memory is still 104.9 MB. Free memory was 64.2 MB in the beginning and 81.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:02:21,529 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.19 ms. Allocated memory is still 104.9 MB. Free memory was 81.7 MB in the beginning and 80.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:02:21,530 INFO L168 Benchmark]: Boogie Preprocessor took 18.05 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 78.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:02:21,530 INFO L168 Benchmark]: RCFGBuilder took 381.86 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 60.7 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 05:02:21,530 INFO L168 Benchmark]: TraceAbstraction took 9468.53 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 60.2 MB in the beginning and 102.5 MB in the end (delta: -42.3 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.1 GB. [2020-12-09 05:02:21,531 INFO L168 Benchmark]: Witness Printer took 43.62 ms. Allocated memory is still 127.9 MB. Free memory was 102.5 MB in the beginning and 99.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:02:21,532 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 104.9 MB. Free memory is still 80.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 173.72 ms. Allocated memory is still 104.9 MB. Free memory was 64.2 MB in the beginning and 81.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.19 ms. Allocated memory is still 104.9 MB. Free memory was 81.7 MB in the beginning and 80.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.05 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 78.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 381.86 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 60.7 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9468.53 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 60.2 MB in the beginning and 102.5 MB in the end (delta: -42.3 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.1 GB. * Witness Printer took 43.62 ms. Allocated memory is still 127.9 MB. Free memory was 102.5 MB in the beginning and 99.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 215 SDtfs, 165 SDslu, 363 SDs, 0 SdLazy, 221 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=6, 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, 8 MinimizatonAttempts, 89 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 10699 SizeOfPredicates, 44 NumberOfNonLiveVariables, 713 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 4/4 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: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...