./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/egcd2-ll.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_0f9855b1-52c3-4239-ac4b-58849cfeffc0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/egcd2-ll.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/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 18c4bd9ccce67fd7e2b8132eb9e5112bf2af351c ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:53:26,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:53:26,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:53:26,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:53:26,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:53:26,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:53:26,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:53:26,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:53:26,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:53:26,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:53:26,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:53:26,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:53:26,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:53:26,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:53:26,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:53:26,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:53:26,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:53:26,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:53:26,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:53:26,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:53:26,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:53:26,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:53:26,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:53:26,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:53:26,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:53:26,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:53:26,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:53:26,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:53:26,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:53:26,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:53:26,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:53:26,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:53:26,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:53:26,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:53:26,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:53:26,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:53:26,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:53:26,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:53:26,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:53:26,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:53:26,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:53:26,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 16:53:26,760 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:53:26,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:53:26,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:53:26,761 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:53:26,761 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:53:26,761 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:53:26,761 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:53:26,761 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:53:26,761 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:53:26,761 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:53:26,761 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:53:26,761 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:53:26,762 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:53:26,762 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:53:26,762 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:53:26,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:53:26,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:53:26,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:53:26,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:53:26,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:53:26,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:53:26,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:53:26,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:53:26,763 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:53:26,763 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:53:26,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:53:26,763 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:53:26,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:53:26,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:53:26,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:53:26,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:53:26,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:53:26,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:53:26,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:53:26,764 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:53:26,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:53:26,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:53:26,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:53:26,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:53:26,765 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_0f9855b1-52c3-4239-ac4b-58849cfeffc0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18c4bd9ccce67fd7e2b8132eb9e5112bf2af351c [2020-12-09 16:53:26,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:53:26,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:53:26,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:53:26,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:53:26,968 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:53:26,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/bin/utaipan/../../sv-benchmarks/c/nla-digbench/egcd2-ll.c [2020-12-09 16:53:27,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/bin/utaipan/data/3b947dbac/ec89f248cd1e4b3d89edbf36f0e1cd41/FLAG5fc2371c8 [2020-12-09 16:53:27,416 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:53:27,417 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/sv-benchmarks/c/nla-digbench/egcd2-ll.c [2020-12-09 16:53:27,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/bin/utaipan/data/3b947dbac/ec89f248cd1e4b3d89edbf36f0e1cd41/FLAG5fc2371c8 [2020-12-09 16:53:27,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/bin/utaipan/data/3b947dbac/ec89f248cd1e4b3d89edbf36f0e1cd41 [2020-12-09 16:53:27,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:53:27,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:53:27,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:53:27,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:53:27,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:53:27,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:53:27" (1/1) ... [2020-12-09 16:53:27,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a8a51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27, skipping insertion in model container [2020-12-09 16:53:27,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:53:27" (1/1) ... [2020-12-09 16:53:27,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:53:27,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:53:27,583 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_0f9855b1-52c3-4239-ac4b-58849cfeffc0/sv-benchmarks/c/nla-digbench/egcd2-ll.c[490,503] [2020-12-09 16:53:27,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:53:27,603 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:53:27,612 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_0f9855b1-52c3-4239-ac4b-58849cfeffc0/sv-benchmarks/c/nla-digbench/egcd2-ll.c[490,503] [2020-12-09 16:53:27,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:53:27,630 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:53:27,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27 WrapperNode [2020-12-09 16:53:27,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:53:27,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:53:27,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:53:27,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:53:27,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27" (1/1) ... [2020-12-09 16:53:27,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27" (1/1) ... [2020-12-09 16:53:27,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:53:27,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:53:27,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:53:27,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:53:27,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27" (1/1) ... [2020-12-09 16:53:27,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27" (1/1) ... [2020-12-09 16:53:27,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27" (1/1) ... [2020-12-09 16:53:27,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27" (1/1) ... [2020-12-09 16:53:27,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27" (1/1) ... [2020-12-09 16:53:27,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27" (1/1) ... [2020-12-09 16:53:27,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27" (1/1) ... [2020-12-09 16:53:27,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:53:27,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:53:27,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:53:27,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:53:27,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/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 16:53:27,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 16:53:27,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:53:27,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:53:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:53:28,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:53:28,046 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-09 16:53:28,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:53:28 BoogieIcfgContainer [2020-12-09 16:53:28,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:53:28,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:53:28,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:53:28,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:53:28,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:53:27" (1/3) ... [2020-12-09 16:53:28,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610ced7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:53:28, skipping insertion in model container [2020-12-09 16:53:28,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:27" (2/3) ... [2020-12-09 16:53:28,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610ced7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:53:28, skipping insertion in model container [2020-12-09 16:53:28,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:53:28" (3/3) ... [2020-12-09 16:53:28,054 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll.c [2020-12-09 16:53:28,063 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:53:28,066 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 16:53:28,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 16:53:28,089 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:53:28,089 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:53:28,089 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:53:28,089 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:53:28,089 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:53:28,090 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:53:28,090 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:53:28,090 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:53:28,099 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-12-09 16:53:28,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 16:53:28,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:53:28,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 16:53:28,104 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 16:53:28,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:53:28,108 INFO L82 PathProgramCache]: Analyzing trace with hash 170452280, now seen corresponding path program 1 times [2020-12-09 16:53:28,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:53:28,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046820656] [2020-12-09 16:53:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:53:28,166 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:53:28,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230962550] [2020-12-09 16:53:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/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 16:53:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:53:28,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 16:53:28,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:53:28,235 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 16:53:28,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:53:28,240 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 16:53:28,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046820656] [2020-12-09 16:53:28,241 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:53:28,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230962550] [2020-12-09 16:53:28,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:53:28,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 16:53:28,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156571797] [2020-12-09 16:53:28,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 16:53:28,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:53:28,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 16:53:28,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 16:53:28,261 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-12-09 16:53:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:53:28,274 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2020-12-09 16:53:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 16:53:28,275 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 16:53:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:53:28,280 INFO L225 Difference]: With dead ends: 61 [2020-12-09 16:53:28,280 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 16:53:28,282 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 16:53:28,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 16:53:28,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 16:53:28,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 16:53:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 16:53:28,304 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 5 [2020-12-09 16:53:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:53:28,305 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 16:53:28,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 16:53:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 16:53:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 16:53:28,305 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:53:28,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 16:53:28,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 16:53:28,506 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 16:53:28,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:53:28,507 INFO L82 PathProgramCache]: Analyzing trace with hash 894702455, now seen corresponding path program 1 times [2020-12-09 16:53:28,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:53:28,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616972298] [2020-12-09 16:53:28,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:53:28,512 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:53:28,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812633475] [2020-12-09 16:53:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/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 16:53:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:53:28,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 16:53:28,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:53:28,594 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 16:53:28,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:53:28,601 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 16:53:28,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616972298] [2020-12-09 16:53:28,601 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:53:28,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812633475] [2020-12-09 16:53:28,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:53:28,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 16:53:28,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972892730] [2020-12-09 16:53:28,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:53:28,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:53:28,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:53:28,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:53:28,605 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 3 states. [2020-12-09 16:53:28,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:53:28,635 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-12-09 16:53:28,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:53:28,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 16:53:28,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:53:28,637 INFO L225 Difference]: With dead ends: 57 [2020-12-09 16:53:28,637 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 16:53:28,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 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 16:53:28,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 16:53:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2020-12-09 16:53:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 16:53:28,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-12-09 16:53:28,643 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 6 [2020-12-09 16:53:28,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:53:28,643 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-12-09 16:53:28,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:53:28,643 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-12-09 16:53:28,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 16:53:28,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:53:28,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 16:53:28,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:53:28,846 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 16:53:28,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:53:28,849 INFO L82 PathProgramCache]: Analyzing trace with hash 894706429, now seen corresponding path program 1 times [2020-12-09 16:53:28,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:53:28,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643503455] [2020-12-09 16:53:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:53:28,866 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:53:28,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922019251] [2020-12-09 16:53:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/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 16:53:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:53:28,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 16:53:28,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:53:28,987 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 16:53:28,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:53:29,014 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 16:53:29,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643503455] [2020-12-09 16:53:29,014 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:53:29,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922019251] [2020-12-09 16:53:29,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:53:29,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 16:53:29,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901101773] [2020-12-09 16:53:29,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 16:53:29,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:53:29,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 16:53:29,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:53:29,016 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2020-12-09 16:53:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:53:29,146 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-12-09 16:53:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 16:53:29,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-12-09 16:53:29,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:53:29,147 INFO L225 Difference]: With dead ends: 63 [2020-12-09 16:53:29,147 INFO L226 Difference]: Without dead ends: 61 [2020-12-09 16:53:29,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-12-09 16:53:29,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-09 16:53:29,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 29. [2020-12-09 16:53:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 16:53:29,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 16:53:29,152 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 6 [2020-12-09 16:53:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:53:29,152 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 16:53:29,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 16:53:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 16:53:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 16:53:29,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:53:29,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:53:29,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:53:29,354 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 16:53:29,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:53:29,355 INFO L82 PathProgramCache]: Analyzing trace with hash 819575904, now seen corresponding path program 1 times [2020-12-09 16:53:29,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:53:29,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850508566] [2020-12-09 16:53:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:53:29,365 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:53:29,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697477256] [2020-12-09 16:53:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/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 16:53:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:53:29,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 16:53:29,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:53:29,512 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 16:53:29,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:53:29,528 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 16:53:29,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850508566] [2020-12-09 16:53:29,528 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:53:29,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697477256] [2020-12-09 16:53:29,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:53:29,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 16:53:29,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527497346] [2020-12-09 16:53:29,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 16:53:29,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:53:29,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 16:53:29,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:53:29,530 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 6 states. [2020-12-09 16:53:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:53:29,589 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-12-09 16:53:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 16:53:29,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-09 16:53:29,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:53:29,590 INFO L225 Difference]: With dead ends: 46 [2020-12-09 16:53:29,590 INFO L226 Difference]: Without dead ends: 44 [2020-12-09 16:53:29,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 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 16:53:29,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-09 16:53:29,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-12-09 16:53:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 16:53:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-12-09 16:53:29,597 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 8 [2020-12-09 16:53:29,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:53:29,598 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-12-09 16:53:29,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 16:53:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-12-09 16:53:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 16:53:29,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:53:29,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:53:29,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:53:29,800 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 16:53:29,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:53:29,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1633585763, now seen corresponding path program 1 times [2020-12-09 16:53:29,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:53:29,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757305095] [2020-12-09 16:53:29,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:53:29,817 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:53:29,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507146795] [2020-12-09 16:53:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/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 16:53:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:53:29,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 16:53:29,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:53:29,913 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 16:53:29,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:53:29,932 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 16:53:29,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757305095] [2020-12-09 16:53:29,933 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:53:29,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507146795] [2020-12-09 16:53:29,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:53:29,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 16:53:29,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172402733] [2020-12-09 16:53:29,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 16:53:29,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:53:29,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 16:53:29,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:53:29,934 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 6 states. [2020-12-09 16:53:30,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:53:30,000 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-12-09 16:53:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 16:53:30,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 16:53:30,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:53:30,001 INFO L225 Difference]: With dead ends: 44 [2020-12-09 16:53:30,001 INFO L226 Difference]: Without dead ends: 42 [2020-12-09 16:53:30,002 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 16:53:30,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-09 16:53:30,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2020-12-09 16:53:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 16:53:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-12-09 16:53:30,009 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 10 [2020-12-09 16:53:30,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:53:30,009 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-12-09 16:53:30,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 16:53:30,009 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-12-09 16:53:30,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 16:53:30,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:53:30,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:53:30,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:53:30,211 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 16:53:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:53:30,212 INFO L82 PathProgramCache]: Analyzing trace with hash -2081954554, now seen corresponding path program 1 times [2020-12-09 16:53:30,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:53:30,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961079874] [2020-12-09 16:53:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:53:30,224 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:53:30,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069795874] [2020-12-09 16:53:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/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 16:53:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:53:30,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 16:53:30,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:53:32,345 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 16:53:36,414 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2020-12-09 16:53:36,429 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 16:53:36,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:53:36,462 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 2, 1] term [2020-12-09 16:53:36,462 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 16:53:36,505 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 16:53:36,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961079874] [2020-12-09 16:53:36,506 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:53:36,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069795874] [2020-12-09 16:53:36,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:53:36,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 16:53:36,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446052371] [2020-12-09 16:53:36,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 16:53:36,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:53:36,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 16:53:36,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 16:53:36,507 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 8 states. [2020-12-09 16:53:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:53:36,513 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-12-09 16:53:36,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 16:53:36,514 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-09 16:53:36,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:53:36,514 INFO L225 Difference]: With dead ends: 38 [2020-12-09 16:53:36,514 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 16:53:36,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 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 16:53:36,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 16:53:36,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 16:53:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 16:53:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 16:53:36,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-12-09 16:53:36,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:53:36,515 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 16:53:36,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 16:53:36,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 16:53:36,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 16:53:36,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:53:36,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 16:53:36,752 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 16:53:36,752 INFO L262 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-12-09 16:53:36,752 INFO L258 CegarLoopResult]: At program point L11-2(lines 10 16) the Hoare annotation is: false [2020-12-09 16:53:36,752 INFO L262 CegarLoopResult]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2020-12-09 16:53:36,752 INFO L258 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2020-12-09 16:53:36,752 INFO L262 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-12-09 16:53:36,752 INFO L258 CegarLoopResult]: At program point L11-8(lines 10 16) the Hoare annotation is: false [2020-12-09 16:53:36,753 INFO L262 CegarLoopResult]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2020-12-09 16:53:36,753 INFO L258 CegarLoopResult]: At program point L11-11(lines 50 51) the Hoare annotation is: false [2020-12-09 16:53:36,753 INFO L262 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-12-09 16:53:36,753 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 16:53:36,753 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 16:53:36,753 INFO L258 CegarLoopResult]: At program point L11-14(lines 10 16) the Hoare annotation is: false [2020-12-09 16:53:36,753 INFO L262 CegarLoopResult]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2020-12-09 16:53:36,753 INFO L265 CegarLoopResult]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2020-12-09 16:53:36,753 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-12-09 16:53:36,753 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-12-09 16:53:36,753 INFO L258 CegarLoopResult]: At program point L45-2(lines 45 54) the Hoare annotation is: false [2020-12-09 16:53:36,754 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-12-09 16:53:36,754 INFO L262 CegarLoopResult]: For program point L45-3(lines 45 54) no Hoare annotation was computed. [2020-12-09 16:53:36,754 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-12-09 16:53:36,757 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-12-09 16:53:36,758 INFO L262 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-12-09 16:53:36,758 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 16:53:36,758 INFO L258 CegarLoopResult]: At program point L39-1(lines 7 66) the Hoare annotation is: false [2020-12-09 16:53:36,758 INFO L262 CegarLoopResult]: For program point L39-2(lines 39 66) no Hoare annotation was computed. [2020-12-09 16:53:36,758 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 16:53:36,758 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-12-09 16:53:36,758 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 16:53:36,758 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 16:53:36,758 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 16:53:36,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:53:36 BoogieIcfgContainer [2020-12-09 16:53:36,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:53:36,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:53:36,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:53:36,765 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:53:36,765 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:53:28" (3/4) ... [2020-12-09 16:53:36,768 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 16:53:36,774 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2020-12-09 16:53:36,775 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 16:53:36,775 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 16:53:36,775 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 16:53:36,809 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0f9855b1-52c3-4239-ac4b-58849cfeffc0/bin/utaipan/witness.graphml [2020-12-09 16:53:36,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:53:36,810 INFO L168 Benchmark]: Toolchain (without parser) took 9362.71 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 64.0 MB in the beginning and 90.6 MB in the end (delta: -26.6 MB). Peak memory consumption was 464.8 kB. Max. memory is 16.1 GB. [2020-12-09 16:53:36,810 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 94.4 MB. Free memory is still 71.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:53:36,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.36 ms. Allocated memory is still 94.4 MB. Free memory was 63.8 MB in the beginning and 53.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 16:53:36,811 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.65 ms. Allocated memory is still 94.4 MB. Free memory was 53.5 MB in the beginning and 51.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:53:36,811 INFO L168 Benchmark]: Boogie Preprocessor took 17.70 ms. Allocated memory is still 94.4 MB. Free memory was 51.8 MB in the beginning and 50.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:53:36,811 INFO L168 Benchmark]: RCFGBuilder took 371.36 ms. Allocated memory is still 94.4 MB. Free memory was 50.5 MB in the beginning and 70.4 MB in the end (delta: -19.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-12-09 16:53:36,812 INFO L168 Benchmark]: TraceAbstraction took 8715.61 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 70.0 MB in the beginning and 94.8 MB in the end (delta: -24.8 MB). Peak memory consumption was 62.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:53:36,812 INFO L168 Benchmark]: Witness Printer took 44.22 ms. Allocated memory is still 119.5 MB. Free memory was 94.8 MB in the beginning and 90.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:53:36,814 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 71.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 181.36 ms. Allocated memory is still 94.4 MB. Free memory was 63.8 MB in the beginning and 53.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.65 ms. Allocated memory is still 94.4 MB. Free memory was 53.5 MB in the beginning and 51.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.70 ms. Allocated memory is still 94.4 MB. Free memory was 51.8 MB in the beginning and 50.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 371.36 ms. Allocated memory is still 94.4 MB. Free memory was 50.5 MB in the beginning and 70.4 MB in the end (delta: -19.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8715.61 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 70.0 MB in the beginning and 94.8 MB in the end (delta: -24.8 MB). Peak memory consumption was 62.1 MB. Max. memory is 16.1 GB. * Witness Printer took 44.22 ms. Allocated memory is still 119.5 MB. Free memory was 94.8 MB in the beginning and 90.6 MB in the end (delta: 4.2 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: 50]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 45]: 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, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 138 SDslu, 132 SDs, 0 SdLazy, 156 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=4, 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, 60 StatesRemovedByMinimization, 4 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, 6.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 6538 SizeOfPredicates, 43 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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...