./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label11.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_431def2f-9a9c-4e7b-b75c-bd0717aa2066/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label11.c -s /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/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 4f5e94ed071347129094298d5dbb28caecb84213 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:25:09,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:25:09,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:25:09,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:25:09,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:25:09,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:25:09,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:25:09,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:25:09,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:25:09,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:25:09,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:25:09,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:25:09,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:25:09,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:25:09,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:25:09,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:25:09,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:25:09,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:25:09,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:25:09,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:25:09,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:25:09,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:25:09,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:25:09,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:25:09,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:25:09,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:25:09,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:25:09,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:25:09,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:25:09,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:25:09,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:25:09,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:25:09,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:25:09,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:25:09,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:25:09,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:25:09,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:25:09,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:25:09,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:25:09,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:25:09,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:25:09,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 12:25:09,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:25:09,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:25:09,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:25:09,640 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:25:09,640 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:25:09,640 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:25:09,640 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:25:09,640 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:25:09,640 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:25:09,641 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:25:09,641 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:25:09,641 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:25:09,641 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:25:09,641 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:25:09,641 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:25:09,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:25:09,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:25:09,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:25:09,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:25:09,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:25:09,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:25:09,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:25:09,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:25:09,643 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:25:09,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:25:09,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:25:09,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:25:09,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:25:09,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:25:09,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:25:09,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:25:09,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:25:09,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:25:09,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:25:09,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:25:09,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:25:09,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:25:09,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:25:09,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:25:09,645 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_431def2f-9a9c-4e7b-b75c-bd0717aa2066/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5e94ed071347129094298d5dbb28caecb84213 [2020-12-09 12:25:09,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:25:09,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:25:09,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:25:09,844 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:25:09,844 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:25:09,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label11.c [2020-12-09 12:25:09,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/bin/utaipan/data/199c87360/e3c8dd27e2ac43c1a2f3d59fd9a969cc/FLAGb1880d108 [2020-12-09 12:25:10,294 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:25:10,295 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/sv-benchmarks/c/eca-rers2012/Problem02_label11.c [2020-12-09 12:25:10,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/bin/utaipan/data/199c87360/e3c8dd27e2ac43c1a2f3d59fd9a969cc/FLAGb1880d108 [2020-12-09 12:25:10,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/bin/utaipan/data/199c87360/e3c8dd27e2ac43c1a2f3d59fd9a969cc [2020-12-09 12:25:10,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:25:10,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:25:10,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:25:10,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:25:10,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:25:10,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:25:10" (1/1) ... [2020-12-09 12:25:10,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0028a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10, skipping insertion in model container [2020-12-09 12:25:10,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:25:10" (1/1) ... [2020-12-09 12:25:10,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:25:10,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:25:10,559 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/sv-benchmarks/c/eca-rers2012/Problem02_label11.c[17696,17709] [2020-12-09 12:25:10,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:25:10,585 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:25:10,632 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_431def2f-9a9c-4e7b-b75c-bd0717aa2066/sv-benchmarks/c/eca-rers2012/Problem02_label11.c[17696,17709] [2020-12-09 12:25:10,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:25:10,651 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:25:10,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10 WrapperNode [2020-12-09 12:25:10,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:25:10,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:25:10,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:25:10,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:25:10,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10" (1/1) ... [2020-12-09 12:25:10,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10" (1/1) ... [2020-12-09 12:25:10,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:25:10,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:25:10,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:25:10,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:25:10,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10" (1/1) ... [2020-12-09 12:25:10,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10" (1/1) ... [2020-12-09 12:25:10,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10" (1/1) ... [2020-12-09 12:25:10,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10" (1/1) ... [2020-12-09 12:25:10,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10" (1/1) ... [2020-12-09 12:25:10,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10" (1/1) ... [2020-12-09 12:25:10,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10" (1/1) ... [2020-12-09 12:25:10,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:25:10,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:25:10,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:25:10,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:25:10,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/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 12:25:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:25:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:25:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:25:10,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:25:12,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:25:12,142 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 12:25:12,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:25:12 BoogieIcfgContainer [2020-12-09 12:25:12,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:25:12,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:25:12,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:25:12,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:25:12,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:25:10" (1/3) ... [2020-12-09 12:25:12,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77abbe02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:25:12, skipping insertion in model container [2020-12-09 12:25:12,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:25:10" (2/3) ... [2020-12-09 12:25:12,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77abbe02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:25:12, skipping insertion in model container [2020-12-09 12:25:12,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:25:12" (3/3) ... [2020-12-09 12:25:12,153 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label11.c [2020-12-09 12:25:12,166 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:25:12,170 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:25:12,180 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 12:25:12,202 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:25:12,202 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:25:12,202 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:25:12,202 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:25:12,203 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:25:12,203 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:25:12,203 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:25:12,203 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:25:12,215 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 12:25:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 12:25:12,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:25:12,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:25:12,221 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:25:12,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:25:12,226 INFO L82 PathProgramCache]: Analyzing trace with hash 925955343, now seen corresponding path program 1 times [2020-12-09 12:25:12,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:25:12,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385232257] [2020-12-09 12:25:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:25:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:25:12,471 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 12:25:12,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385232257] [2020-12-09 12:25:12,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:25:12,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:25:12,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368899475] [2020-12-09 12:25:12,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:25:12,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:25:12,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:25:12,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:25:12,486 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 12:25:12,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:25:12,864 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 12:25:12,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:25:12,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 12:25:12,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:25:12,874 INFO L225 Difference]: With dead ends: 251 [2020-12-09 12:25:12,875 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 12:25:12,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:25:12,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 12:25:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 12:25:12,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 12:25:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-12-09 12:25:12,915 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-12-09 12:25:12,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:25:12,915 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-12-09 12:25:12,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:25:12,916 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-12-09 12:25:12,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 12:25:12,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:25:12,919 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:25:12,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:25:12,919 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:25:12,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:25:12,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1427741865, now seen corresponding path program 1 times [2020-12-09 12:25:12,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:25:12,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858354792] [2020-12-09 12:25:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:25:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:25:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:25:12,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858354792] [2020-12-09 12:25:12,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:25:12,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:25:12,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873339605] [2020-12-09 12:25:12,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:25:12,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:25:12,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:25:12,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:25:12,973 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-12-09 12:25:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:25:13,123 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-12-09 12:25:13,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:25:13,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 12:25:13,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:25:13,125 INFO L225 Difference]: With dead ends: 325 [2020-12-09 12:25:13,125 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 12:25:13,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:25:13,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 12:25:13,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 12:25:13,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 12:25:13,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-12-09 12:25:13,137 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-12-09 12:25:13,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:25:13,137 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-12-09 12:25:13,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:25:13,138 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-12-09 12:25:13,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 12:25:13,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:25:13,139 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:25:13,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 12:25:13,140 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:25:13,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:25:13,140 INFO L82 PathProgramCache]: Analyzing trace with hash 221755822, now seen corresponding path program 1 times [2020-12-09 12:25:13,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:25:13,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014219985] [2020-12-09 12:25:13,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:25:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:25:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:25:13,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014219985] [2020-12-09 12:25:13,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:25:13,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:25:13,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847703980] [2020-12-09 12:25:13,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:25:13,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:25:13,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:25:13,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:25:13,189 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-12-09 12:25:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:25:13,425 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2020-12-09 12:25:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:25:13,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 12:25:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:25:13,427 INFO L225 Difference]: With dead ends: 485 [2020-12-09 12:25:13,427 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 12:25:13,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:25:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 12:25:13,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-12-09 12:25:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-09 12:25:13,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-12-09 12:25:13,441 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2020-12-09 12:25:13,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:25:13,441 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-12-09 12:25:13,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:25:13,441 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-12-09 12:25:13,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 12:25:13,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:25:13,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:25:13,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 12:25:13,443 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:25:13,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:25:13,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2134427321, now seen corresponding path program 1 times [2020-12-09 12:25:13,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:25:13,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507545146] [2020-12-09 12:25:13,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:25:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:25:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:25:13,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507545146] [2020-12-09 12:25:13,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:25:13,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:25:13,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998756433] [2020-12-09 12:25:13,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:25:13,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:25:13,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:25:13,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:25:13,500 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-12-09 12:25:13,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:25:13,769 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-12-09 12:25:13,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:25:13,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 12:25:13,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:25:13,772 INFO L225 Difference]: With dead ends: 565 [2020-12-09 12:25:13,772 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 12:25:13,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:25:13,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 12:25:13,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 12:25:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 12:25:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-12-09 12:25:13,783 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-12-09 12:25:13,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:25:13,783 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-12-09 12:25:13,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:25:13,783 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-12-09 12:25:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 12:25:13,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:25:13,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:25:13,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 12:25:13,786 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:25:13,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:25:13,786 INFO L82 PathProgramCache]: Analyzing trace with hash -2118169839, now seen corresponding path program 1 times [2020-12-09 12:25:13,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:25:13,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820375100] [2020-12-09 12:25:13,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:25:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:25:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:25:13,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820375100] [2020-12-09 12:25:13,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863770516] [2020-12-09 12:25:13,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/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 12:25:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:25:14,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 12:25:14,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:25:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 12:25:14,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:25:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 12:25:14,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 12:25:14,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 12:25:14,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503093685] [2020-12-09 12:25:14,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:25:14,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:25:14,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:25:14,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:25:14,244 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-12-09 12:25:14,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:25:14,467 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2020-12-09 12:25:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:25:14,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 12:25:14,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:25:14,471 INFO L225 Difference]: With dead ends: 885 [2020-12-09 12:25:14,471 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 12:25:14,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:25:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 12:25:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2020-12-09 12:25:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 12:25:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 703 transitions. [2020-12-09 12:25:14,484 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 703 transitions. Word has length 107 [2020-12-09 12:25:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:25:14,484 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 703 transitions. [2020-12-09 12:25:14,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:25:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 703 transitions. [2020-12-09 12:25:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 12:25:14,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:25:14,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:25:14,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:25:14,687 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:25:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:25:14,688 INFO L82 PathProgramCache]: Analyzing trace with hash -440298917, now seen corresponding path program 1 times [2020-12-09 12:25:14,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:25:14,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083615578] [2020-12-09 12:25:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:25:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:25:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 12:25:14,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083615578] [2020-12-09 12:25:14,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:25:14,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:25:14,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172149799] [2020-12-09 12:25:14,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:25:14,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:25:14,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:25:14,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:25:14,768 INFO L87 Difference]: Start difference. First operand 483 states and 703 transitions. Second operand 3 states. [2020-12-09 12:25:15,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:25:15,049 INFO L93 Difference]: Finished difference Result 1285 states and 1835 transitions. [2020-12-09 12:25:15,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:25:15,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-09 12:25:15,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:25:15,053 INFO L225 Difference]: With dead ends: 1285 [2020-12-09 12:25:15,053 INFO L226 Difference]: Without dead ends: 803 [2020-12-09 12:25:15,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:25:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-12-09 12:25:15,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-12-09 12:25:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 12:25:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1053 transitions. [2020-12-09 12:25:15,070 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1053 transitions. Word has length 111 [2020-12-09 12:25:15,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:25:15,070 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1053 transitions. [2020-12-09 12:25:15,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:25:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1053 transitions. [2020-12-09 12:25:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-09 12:25:15,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:25:15,072 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:25:15,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 12:25:15,072 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:25:15,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:25:15,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1534348476, now seen corresponding path program 1 times [2020-12-09 12:25:15,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:25:15,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810434402] [2020-12-09 12:25:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:25:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:25:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 12:25:15,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810434402] [2020-12-09 12:25:15,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:25:15,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:25:15,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165752827] [2020-12-09 12:25:15,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:25:15,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:25:15,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:25:15,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:25:15,116 INFO L87 Difference]: Start difference. First operand 803 states and 1053 transitions. Second operand 3 states. [2020-12-09 12:25:15,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:25:15,391 INFO L93 Difference]: Finished difference Result 1845 states and 2475 transitions. [2020-12-09 12:25:15,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:25:15,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-12-09 12:25:15,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:25:15,397 INFO L225 Difference]: With dead ends: 1845 [2020-12-09 12:25:15,397 INFO L226 Difference]: Without dead ends: 963 [2020-12-09 12:25:15,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:25:15,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-12-09 12:25:15,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-12-09 12:25:15,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-12-09 12:25:15,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1131 transitions. [2020-12-09 12:25:15,424 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1131 transitions. Word has length 133 [2020-12-09 12:25:15,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:25:15,424 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1131 transitions. [2020-12-09 12:25:15,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:25:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1131 transitions. [2020-12-09 12:25:15,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-09 12:25:15,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:25:15,428 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:25:15,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 12:25:15,428 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:25:15,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:25:15,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1274092027, now seen corresponding path program 1 times [2020-12-09 12:25:15,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:25:15,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689042908] [2020-12-09 12:25:15,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:25:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:25:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-09 12:25:15,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689042908] [2020-12-09 12:25:15,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73348022] [2020-12-09 12:25:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/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 12:25:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:25:15,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 12:25:15,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:25:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 12:25:15,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:25:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 12:25:15,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 12:25:15,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 12:25:15,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884394277] [2020-12-09 12:25:15,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:25:15,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:25:15,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:25:15,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:25:15,829 INFO L87 Difference]: Start difference. First operand 963 states and 1131 transitions. Second operand 3 states. [2020-12-09 12:25:16,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:25:16,111 INFO L93 Difference]: Finished difference Result 2003 states and 2379 transitions. [2020-12-09 12:25:16,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:25:16,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-12-09 12:25:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:25:16,112 INFO L225 Difference]: With dead ends: 2003 [2020-12-09 12:25:16,112 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 12:25:16,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:25:16,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 12:25:16,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 12:25:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 12:25:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 12:25:16,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2020-12-09 12:25:16,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:25:16,115 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 12:25:16,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:25:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 12:25:16,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 12:25:16,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:25:16,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 12:25:16,446 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 12:25:16,447 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 12:25:16,447 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 12:25:16,447 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 12:25:16,447 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 12:25:16,447 INFO L262 CegarLoopResult]: For program point L502-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 12:25:16,447 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 12:25:16,447 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 12:25:16,447 INFO L262 CegarLoopResult]: For program point L505-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 12:25:16,447 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 12:25:16,448 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 12:25:16,448 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 12:25:16,448 INFO L262 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-12-09 12:25:16,448 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 12:25:16,448 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 12:25:16,448 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 12:25:16,448 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 12:25:16,448 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 12:25:16,448 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 12:25:16,449 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 12:25:16,449 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 12:25:16,449 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 12:25:16,449 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 12:25:16,449 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 12:25:16,449 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 12:25:16,449 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 12:25:16,449 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 12:25:16,449 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 12:25:16,449 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 12:25:16,450 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 12:25:16,450 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 12:25:16,450 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 12:25:16,450 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 12:25:16,450 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 12:25:16,450 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 12:25:16,450 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 12:25:16,450 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 12:25:16,450 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 12:25:16,451 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 12:25:16,451 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 506) no Hoare annotation was computed. [2020-12-09 12:25:16,451 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 12:25:16,451 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 12:25:16,451 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 12:25:16,451 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 12:25:16,451 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 12:25:16,451 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 12:25:16,451 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 12:25:16,452 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 12:25:16,452 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 12:25:16,452 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 12:25:16,452 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 12:25:16,452 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 12:25:16,452 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 12:25:16,452 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 12:25:16,452 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 12:25:16,452 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 12:25:16,453 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and .cse0 (<= ~a25~0 0) .cse1) (and (<= ~a28~0 7) .cse0) (and (= ~a19~0 1) (<= 8 ~a17~0) .cse0) (and (<= 9 ~a28~0) .cse0 .cse1))) [2020-12-09 12:25:16,453 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 12:25:16,453 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 12:25:16,453 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 12:25:16,453 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 12:25:16,453 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 12:25:16,453 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 12:25:16,453 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 12:25:16,454 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 12:25:16,454 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 12:25:16,454 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 12:25:16,454 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 12:25:16,454 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and .cse0 (<= ~a25~0 0) .cse1) (and (<= ~a28~0 7) .cse0) (and (= ~a19~0 1) (<= 8 ~a17~0) .cse0) (and (<= 9 ~a28~0) .cse0 .cse1))) [2020-12-09 12:25:16,454 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 12:25:16,454 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 12:25:16,454 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 12:25:16,454 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 12:25:16,455 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 12:25:16,455 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 12:25:16,455 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 12:25:16,455 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 12:25:16,455 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 12:25:16,455 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 12:25:16,455 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 12:25:16,455 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 12:25:16,455 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 12:25:16,455 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 12:25:16,455 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 12:25:16,456 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 12:25:16,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:25:16 BoogieIcfgContainer [2020-12-09 12:25:16,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:25:16,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:25:16,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:25:16,469 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:25:16,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:25:12" (3/4) ... [2020-12-09 12:25:16,471 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 12:25:16,486 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 12:25:16,487 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 12:25:16,488 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 12:25:16,489 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 12:25:16,570 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_431def2f-9a9c-4e7b-b75c-bd0717aa2066/bin/utaipan/witness.graphml [2020-12-09 12:25:16,570 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:25:16,571 INFO L168 Benchmark]: Toolchain (without parser) took 6250.19 ms. Allocated memory was 100.7 MB in the beginning and 247.5 MB in the end (delta: 146.8 MB). Free memory was 58.4 MB in the beginning and 83.5 MB in the end (delta: -25.1 MB). Peak memory consumption was 122.9 MB. Max. memory is 16.1 GB. [2020-12-09 12:25:16,571 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 76.3 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:25:16,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.28 ms. Allocated memory is still 100.7 MB. Free memory was 58.1 MB in the beginning and 58.2 MB in the end (delta: -71.2 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:25:16,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.75 ms. Allocated memory is still 100.7 MB. Free memory was 58.2 MB in the beginning and 52.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 12:25:16,572 INFO L168 Benchmark]: Boogie Preprocessor took 41.82 ms. Allocated memory is still 100.7 MB. Free memory was 52.6 MB in the beginning and 48.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:25:16,572 INFO L168 Benchmark]: RCFGBuilder took 1390.64 ms. Allocated memory was 100.7 MB in the beginning and 136.3 MB in the end (delta: 35.7 MB). Free memory was 48.4 MB in the beginning and 61.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2020-12-09 12:25:16,572 INFO L168 Benchmark]: TraceAbstraction took 4321.84 ms. Allocated memory was 136.3 MB in the beginning and 247.5 MB in the end (delta: 111.1 MB). Free memory was 60.6 MB in the beginning and 98.1 MB in the end (delta: -37.5 MB). Peak memory consumption was 74.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:25:16,573 INFO L168 Benchmark]: Witness Printer took 101.12 ms. Allocated memory is still 247.5 MB. Free memory was 98.1 MB in the beginning and 83.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:25:16,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 76.3 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.28 ms. Allocated memory is still 100.7 MB. Free memory was 58.1 MB in the beginning and 58.2 MB in the end (delta: -71.2 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.75 ms. Allocated memory is still 100.7 MB. Free memory was 58.2 MB in the beginning and 52.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.82 ms. Allocated memory is still 100.7 MB. Free memory was 52.6 MB in the beginning and 48.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1390.64 ms. Allocated memory was 100.7 MB in the beginning and 136.3 MB in the end (delta: 35.7 MB). Free memory was 48.4 MB in the beginning and 61.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4321.84 ms. Allocated memory was 136.3 MB in the beginning and 247.5 MB in the end (delta: 111.1 MB). Free memory was 60.6 MB in the beginning and 98.1 MB in the end (delta: -37.5 MB). Peak memory consumption was 74.7 MB. Max. memory is 16.1 GB. * Witness Printer took 101.12 ms. Allocated memory is still 247.5 MB. Free memory was 98.1 MB in the beginning and 83.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 506]: 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 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((a17 <= 8 && a25 <= 0) && a28 <= 10) || (a28 <= 7 && a17 <= 8)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((9 <= a28 && a17 <= 8) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((a17 <= 8 && a25 <= 0) && a28 <= 10) || (a28 <= 7 && a17 <= 8)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((9 <= a28 && a17 <= 8) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 379 SDtfs, 496 SDslu, 38 SDs, 0 SdLazy, 1644 SolverSat, 449 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 540 GetRequests, 524 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 160 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 77 HoareAnnotationTreeSize, 3 FomulaSimplifications, 448 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 166 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1138 NumberOfCodeBlocks, 1138 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1387 ConstructedInterpolants, 0 QuantifiedInterpolants, 528047 SizeOfPredicates, 0 NumberOfNonLiveVariables, 647 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 704/728 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...