./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label23.c -s /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/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 515c445dffdf047de080b804ef978087ccc975eb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:23:31,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:23:31,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:23:31,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:23:31,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:23:31,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:23:31,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:23:31,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:23:31,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:23:31,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:23:31,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:23:31,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:23:31,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:23:31,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:23:31,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:23:31,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:23:31,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:23:31,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:23:31,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:23:31,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:23:31,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:23:31,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:23:31,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:23:31,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:23:31,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:23:31,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:23:31,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:23:31,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:23:31,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:23:31,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:23:31,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:23:31,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:23:31,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:23:31,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:23:31,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:23:31,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:23:31,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:23:31,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:23:31,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:23:31,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:23:31,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:23:31,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:23:31,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:23:31,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:23:31,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:23:31,744 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:23:31,744 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:23:31,744 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:23:31,744 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:23:31,745 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:23:31,745 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:23:31,745 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:23:31,745 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:23:31,745 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:23:31,746 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:23:31,746 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:23:31,746 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:23:31,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:23:31,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:23:31,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:23:31,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:23:31,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:23:31,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:23:31,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:23:31,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:23:31,749 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:23:31,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:23:31,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:23:31,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:23:31,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:23:31,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:23:31,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:23:31,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:23:31,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:23:31,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:23:31,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:23:31,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:23:31,751 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:23:31,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:23:31,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:23:31,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:23:31,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:23:31,753 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_22658faa-0f96-45a9-90b8-6fd73bcba145/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 515c445dffdf047de080b804ef978087ccc975eb [2020-11-28 07:23:32,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:23:32,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:23:32,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:23:32,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:23:32,067 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:23:32,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label23.c [2020-11-28 07:23:32,166 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/bin/utaipan/data/0b23a8bc3/7511ffff973e41998f551fc214bbe27c/FLAG18cc8eb4b [2020-11-28 07:23:32,872 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:23:32,876 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/sv-benchmarks/c/eca-rers2012/Problem02_label23.c [2020-11-28 07:23:32,896 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/bin/utaipan/data/0b23a8bc3/7511ffff973e41998f551fc214bbe27c/FLAG18cc8eb4b [2020-11-28 07:23:33,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/bin/utaipan/data/0b23a8bc3/7511ffff973e41998f551fc214bbe27c [2020-11-28 07:23:33,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:23:33,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:23:33,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:23:33,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:23:33,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:23:33,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:23:33" (1/1) ... [2020-11-28 07:23:33,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d195a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33, skipping insertion in model container [2020-11-28 07:23:33,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:23:33" (1/1) ... [2020-11-28 07:23:33,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:23:33,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:23:33,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:23:33,657 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:23:33,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:23:33,790 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:23:33,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33 WrapperNode [2020-11-28 07:23:33,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:23:33,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:23:33,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:23:33,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:23:33,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33" (1/1) ... [2020-11-28 07:23:33,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33" (1/1) ... [2020-11-28 07:23:33,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:23:33,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:23:33,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:23:33,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:23:33,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33" (1/1) ... [2020-11-28 07:23:33,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33" (1/1) ... [2020-11-28 07:23:33,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33" (1/1) ... [2020-11-28 07:23:33,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33" (1/1) ... [2020-11-28 07:23:33,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33" (1/1) ... [2020-11-28 07:23:33,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33" (1/1) ... [2020-11-28 07:23:33,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33" (1/1) ... [2020-11-28 07:23:33,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:23:33,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:23:33,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:23:33,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:23:33,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/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 [2020-11-28 07:23:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:23:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:23:34,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:23:34,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:23:36,640 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:23:36,640 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:23:36,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:23:36 BoogieIcfgContainer [2020-11-28 07:23:36,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:23:36,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:23:36,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:23:36,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:23:36,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:23:33" (1/3) ... [2020-11-28 07:23:36,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399dd0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:23:36, skipping insertion in model container [2020-11-28 07:23:36,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:33" (2/3) ... [2020-11-28 07:23:36,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399dd0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:23:36, skipping insertion in model container [2020-11-28 07:23:36,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:23:36" (3/3) ... [2020-11-28 07:23:36,656 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label23.c [2020-11-28 07:23:36,666 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:23:36,671 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:23:36,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:23:36,719 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:23:36,719 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:23:36,719 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:23:36,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:23:36,720 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:23:36,720 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:23:36,720 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:23:36,720 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:23:36,739 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:23:36,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:23:36,750 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:23:36,751 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] [2020-11-28 07:23:36,751 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:23:36,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:23:36,758 INFO L82 PathProgramCache]: Analyzing trace with hash -216537840, now seen corresponding path program 1 times [2020-11-28 07:23:36,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:23:36,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43850637] [2020-11-28 07:23:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:23:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:23:37,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43850637] [2020-11-28 07:23:37,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:23:37,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:23:37,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45429334] [2020-11-28 07:23:37,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:23:37,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:23:37,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:23:37,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:23:37,236 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:23:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:23:37,945 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:23:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:23:37,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:23:37,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:23:37,960 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:23:37,960 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:23:37,966 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 [2020-11-28 07:23:37,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:23:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:23:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:23:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-11-28 07:23:38,037 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-11-28 07:23:38,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:23:38,038 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-11-28 07:23:38,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:23:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-11-28 07:23:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-28 07:23:38,043 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:23:38,044 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] [2020-11-28 07:23:38,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:23:38,044 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:23:38,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:23:38,045 INFO L82 PathProgramCache]: Analyzing trace with hash -215849766, now seen corresponding path program 1 times [2020-11-28 07:23:38,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:23:38,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112419991] [2020-11-28 07:23:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:23:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:23:38,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112419991] [2020-11-28 07:23:38,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:23:38,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:23:38,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921023573] [2020-11-28 07:23:38,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:23:38,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:23:38,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:23:38,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:23:38,158 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-11-28 07:23:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:23:38,520 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-11-28 07:23:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:23:38,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-28 07:23:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:23:38,522 INFO L225 Difference]: With dead ends: 325 [2020-11-28 07:23:38,522 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:23:38,524 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 [2020-11-28 07:23:38,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:23:38,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:23:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:23:38,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-11-28 07:23:38,537 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-11-28 07:23:38,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:23:38,537 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-11-28 07:23:38,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:23:38,538 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-11-28 07:23:38,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-28 07:23:38,540 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:23:38,541 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] [2020-11-28 07:23:38,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:23:38,541 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:23:38,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:23:38,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1467826669, now seen corresponding path program 1 times [2020-11-28 07:23:38,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:23:38,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401880303] [2020-11-28 07:23:38,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:23:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:23:38,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401880303] [2020-11-28 07:23:38,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:23:38,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:23:38,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771062212] [2020-11-28 07:23:38,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:23:38,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:23:38,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:23:38,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:23:38,632 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-11-28 07:23:39,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:23:39,047 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2020-11-28 07:23:39,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:23:39,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-28 07:23:39,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:23:39,051 INFO L225 Difference]: With dead ends: 485 [2020-11-28 07:23:39,051 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 07:23:39,053 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 [2020-11-28 07:23:39,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 07:23:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-11-28 07:23:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-28 07:23:39,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-11-28 07:23:39,100 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2020-11-28 07:23:39,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:23:39,100 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-11-28 07:23:39,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:23:39,100 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-11-28 07:23:39,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-28 07:23:39,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:23:39,104 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] [2020-11-28 07:23:39,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:23:39,104 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:23:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:23:39,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1373216776, now seen corresponding path program 1 times [2020-11-28 07:23:39,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:23:39,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644484074] [2020-11-28 07:23:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:23:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:23:39,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644484074] [2020-11-28 07:23:39,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:23:39,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:23:39,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189492423] [2020-11-28 07:23:39,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:23:39,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:23:39,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:23:39,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:23:39,252 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-11-28 07:23:39,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:23:39,706 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-11-28 07:23:39,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:23:39,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-28 07:23:39,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:23:39,709 INFO L225 Difference]: With dead ends: 565 [2020-11-28 07:23:39,709 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 07:23:39,711 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 [2020-11-28 07:23:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 07:23:39,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-28 07:23:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-28 07:23:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-11-28 07:23:39,726 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-11-28 07:23:39,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:23:39,727 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-11-28 07:23:39,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:23:39,727 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-11-28 07:23:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-28 07:23:39,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:23:39,729 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] [2020-11-28 07:23:39,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:23:39,729 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:23:39,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:23:39,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1281007826, now seen corresponding path program 1 times [2020-11-28 07:23:39,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:23:39,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787133696] [2020-11-28 07:23:39,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:23:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:23:40,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787133696] [2020-11-28 07:23:40,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950698919] [2020-11-28 07:23:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/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 [2020-11-28 07:23:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:40,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:23:40,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:23:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:23:40,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:23:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:23:40,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:23:40,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:23:40,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785719550] [2020-11-28 07:23:40,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:23:40,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:23:40,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:23:40,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:23:40,500 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-11-28 07:23:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:23:40,944 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2020-11-28 07:23:40,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:23:40,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-28 07:23:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:23:40,949 INFO L225 Difference]: With dead ends: 885 [2020-11-28 07:23:40,949 INFO L226 Difference]: Without dead ends: 563 [2020-11-28 07:23:40,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:23:40,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-28 07:23:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2020-11-28 07:23:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-28 07:23:40,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 703 transitions. [2020-11-28 07:23:40,989 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 703 transitions. Word has length 107 [2020-11-28 07:23:40,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:23:40,990 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 703 transitions. [2020-11-28 07:23:40,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:23:40,991 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 703 transitions. [2020-11-28 07:23:40,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-28 07:23:40,994 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:23:40,994 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] [2020-11-28 07:23:41,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:23:41,222 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:23:41,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:23:41,223 INFO L82 PathProgramCache]: Analyzing trace with hash 441530652, now seen corresponding path program 1 times [2020-11-28 07:23:41,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:23:41,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201983877] [2020-11-28 07:23:41,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:23:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:23:41,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201983877] [2020-11-28 07:23:41,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:23:41,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:23:41,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19695493] [2020-11-28 07:23:41,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:23:41,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:23:41,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:23:41,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:23:41,308 INFO L87 Difference]: Start difference. First operand 483 states and 703 transitions. Second operand 3 states. [2020-11-28 07:23:41,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:23:41,794 INFO L93 Difference]: Finished difference Result 1285 states and 1835 transitions. [2020-11-28 07:23:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:23:41,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-28 07:23:41,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:23:41,800 INFO L225 Difference]: With dead ends: 1285 [2020-11-28 07:23:41,800 INFO L226 Difference]: Without dead ends: 803 [2020-11-28 07:23:41,801 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 [2020-11-28 07:23:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-28 07:23:41,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-11-28 07:23:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-11-28 07:23:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1053 transitions. [2020-11-28 07:23:41,839 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1053 transitions. Word has length 111 [2020-11-28 07:23:41,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:23:41,840 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1053 transitions. [2020-11-28 07:23:41,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:23:41,840 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1053 transitions. [2020-11-28 07:23:41,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-28 07:23:41,844 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:23:41,844 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] [2020-11-28 07:23:41,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:23:41,845 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:23:41,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:23:41,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1989618877, now seen corresponding path program 1 times [2020-11-28 07:23:41,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:23:41,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895949278] [2020-11-28 07:23:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:23:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:23:41,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895949278] [2020-11-28 07:23:41,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:23:41,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:23:41,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849287284] [2020-11-28 07:23:41,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:23:41,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:23:41,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:23:41,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:23:41,994 INFO L87 Difference]: Start difference. First operand 803 states and 1053 transitions. Second operand 3 states. [2020-11-28 07:23:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:23:42,527 INFO L93 Difference]: Finished difference Result 1845 states and 2475 transitions. [2020-11-28 07:23:42,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:23:42,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-28 07:23:42,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:23:42,537 INFO L225 Difference]: With dead ends: 1845 [2020-11-28 07:23:42,539 INFO L226 Difference]: Without dead ends: 963 [2020-11-28 07:23:42,541 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 [2020-11-28 07:23:42,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-11-28 07:23:42,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-11-28 07:23:42,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-11-28 07:23:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1131 transitions. [2020-11-28 07:23:42,571 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1131 transitions. Word has length 133 [2020-11-28 07:23:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:23:42,571 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1131 transitions. [2020-11-28 07:23:42,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:23:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1131 transitions. [2020-11-28 07:23:42,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-28 07:23:42,575 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:23:42,576 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] [2020-11-28 07:23:42,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:23:42,576 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:23:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:23:42,577 INFO L82 PathProgramCache]: Analyzing trace with hash -189555897, now seen corresponding path program 1 times [2020-11-28 07:23:42,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:23:42,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311587946] [2020-11-28 07:23:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:23:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-11-28 07:23:42,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311587946] [2020-11-28 07:23:42,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785644949] [2020-11-28 07:23:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/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 [2020-11-28 07:23:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:42,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:23:42,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:23:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-11-28 07:23:43,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:23:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-11-28 07:23:43,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:23:43,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:23:43,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976988132] [2020-11-28 07:23:43,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:23:43,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:23:43,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:23:43,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:23:43,116 INFO L87 Difference]: Start difference. First operand 963 states and 1131 transitions. Second operand 3 states. [2020-11-28 07:23:43,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:23:43,654 INFO L93 Difference]: Finished difference Result 2325 states and 2779 transitions. [2020-11-28 07:23:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:23:43,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-11-28 07:23:43,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:23:43,666 INFO L225 Difference]: With dead ends: 2325 [2020-11-28 07:23:43,666 INFO L226 Difference]: Without dead ends: 1443 [2020-11-28 07:23:43,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:23:43,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2020-11-28 07:23:43,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1203. [2020-11-28 07:23:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-11-28 07:23:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1409 transitions. [2020-11-28 07:23:43,716 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1409 transitions. Word has length 154 [2020-11-28 07:23:43,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:23:43,717 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1409 transitions. [2020-11-28 07:23:43,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:23:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1409 transitions. [2020-11-28 07:23:43,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-28 07:23:43,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:23:43,722 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-11-28 07:23:43,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:23:43,950 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:23:43,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:23:43,950 INFO L82 PathProgramCache]: Analyzing trace with hash 989818482, now seen corresponding path program 1 times [2020-11-28 07:23:43,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:23:43,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390777397] [2020-11-28 07:23:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:23:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-11-28 07:23:44,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390777397] [2020-11-28 07:23:44,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:23:44,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:23:44,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952498218] [2020-11-28 07:23:44,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:23:44,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:23:44,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:23:44,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:23:44,117 INFO L87 Difference]: Start difference. First operand 1203 states and 1409 transitions. Second operand 3 states. [2020-11-28 07:23:44,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:23:44,544 INFO L93 Difference]: Finished difference Result 2563 states and 2973 transitions. [2020-11-28 07:23:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:23:44,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-11-28 07:23:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:23:44,545 INFO L225 Difference]: With dead ends: 2563 [2020-11-28 07:23:44,545 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:23:44,548 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 [2020-11-28 07:23:44,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:23:44,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:23:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:23:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:23:44,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 196 [2020-11-28 07:23:44,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:23:44,548 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:23:44,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:23:44,549 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:23:44,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:23:44,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:23:44,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:23:44,743 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-11-28 07:23:44,876 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-11-28 07:23:44,880 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:23:44,880 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:23:44,880 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:23:44,880 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:23:44,880 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:23:44,880 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:23:44,880 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:23:44,880 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:23:44,881 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:23:44,881 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:23:44,881 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:23:44,881 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:23:44,881 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:23:44,881 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:23:44,881 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:23:44,881 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:23:44,881 INFO L274 CegarLoopResult]: For program point L577-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:23:44,881 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:23:44,882 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:23:44,882 INFO L274 CegarLoopResult]: For program point L580-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:23:44,882 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:23:44,882 INFO L274 CegarLoopResult]: For program point L581(line 581) no Hoare annotation was computed. [2020-11-28 07:23:44,882 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:23:44,882 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:23:44,882 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:23:44,882 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:23:44,882 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:23:44,882 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:23:44,882 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:23:44,882 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:23:44,883 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:23:44,883 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:23:44,883 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:23:44,883 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:23:44,883 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:23:44,883 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:23:44,883 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:23:44,883 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:23:44,883 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:23:44,883 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:23:44,884 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:23:44,884 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:23:44,885 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:23:44,885 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:23:44,885 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:23:44,885 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:23:44,885 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:23:44,885 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:23:44,885 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:23:44,886 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:23:44,886 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:23:44,886 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:23:44,886 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:23:44,886 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:23:44,886 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:23:44,886 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:23:44,889 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse2 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and .cse0 (<= ~a25~0 0) .cse1) (and (<= ~a28~0 7) .cse0) (and (= ~a19~0 1) .cse2 .cse0) (and (<= 10 ~a28~0) .cse2 .cse0 .cse1) (and (= ~a11~0 1) .cse0 .cse1))) [2020-11-28 07:23:44,889 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:23:44,889 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:23:44,890 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:23:44,890 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:23:44,890 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:23:44,891 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:23:44,891 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:23:44,891 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:23:44,891 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:23:44,892 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:23:44,892 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:23:44,892 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse2 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and .cse0 (<= ~a25~0 0) .cse1) (and (<= ~a28~0 7) .cse0) (and (= ~a19~0 1) .cse2 .cse0) (and (<= 10 ~a28~0) .cse2 .cse0 .cse1) (and (= ~a11~0 1) .cse0 .cse1))) [2020-11-28 07:23:44,892 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:23:44,892 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:23:44,892 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:23:44,893 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:23:44,893 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:23:44,893 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:23:44,893 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:23:44,893 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:23:44,893 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:23:44,893 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:23:44,894 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:23:44,894 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:23:44,894 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:23:44,894 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:23:44,894 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:23:44,894 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:23:44,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:23:44 BoogieIcfgContainer [2020-11-28 07:23:44,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:23:44,916 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:23:44,916 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:23:44,916 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:23:44,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:23:36" (3/4) ... [2020-11-28 07:23:44,920 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:23:44,949 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-28 07:23:44,951 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:23:44,952 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:23:44,954 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:23:45,114 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_22658faa-0f96-45a9-90b8-6fd73bcba145/bin/utaipan/witness.graphml [2020-11-28 07:23:45,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:23:45,116 INFO L168 Benchmark]: Toolchain (without parser) took 12001.11 ms. Allocated memory was 90.2 MB in the beginning and 291.5 MB in the end (delta: 201.3 MB). Free memory was 56.3 MB in the beginning and 222.4 MB in the end (delta: -166.1 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:45,117 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 71.3 MB. Free memory is still 33.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:23:45,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.46 ms. Allocated memory is still 90.2 MB. Free memory was 56.1 MB in the beginning and 51.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:45,124 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.22 ms. Allocated memory is still 90.2 MB. Free memory was 51.9 MB in the beginning and 46.4 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:45,125 INFO L168 Benchmark]: Boogie Preprocessor took 65.31 ms. Allocated memory is still 90.2 MB. Free memory was 46.4 MB in the beginning and 42.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:45,125 INFO L168 Benchmark]: RCFGBuilder took 2705.54 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 41.8 MB in the beginning and 96.5 MB in the end (delta: -54.7 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:45,126 INFO L168 Benchmark]: TraceAbstraction took 8268.39 ms. Allocated memory was 134.2 MB in the beginning and 291.5 MB in the end (delta: 157.3 MB). Free memory was 96.5 MB in the beginning and 238.1 MB in the end (delta: -141.6 MB). Peak memory consumption was 112.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:45,126 INFO L168 Benchmark]: Witness Printer took 199.04 ms. Allocated memory is still 291.5 MB. Free memory was 238.1 MB in the beginning and 222.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:45,128 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 71.3 MB. Free memory is still 33.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 675.46 ms. Allocated memory is still 90.2 MB. Free memory was 56.1 MB in the beginning and 51.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.22 ms. Allocated memory is still 90.2 MB. Free memory was 51.9 MB in the beginning and 46.4 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.31 ms. Allocated memory is still 90.2 MB. Free memory was 46.4 MB in the beginning and 42.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2705.54 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 41.8 MB in the beginning and 96.5 MB in the end (delta: -54.7 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8268.39 ms. Allocated memory was 134.2 MB in the beginning and 291.5 MB in the end (delta: 157.3 MB). Free memory was 96.5 MB in the beginning and 238.1 MB in the end (delta: -141.6 MB). Peak memory consumption was 112.2 MB. Max. memory is 16.1 GB. * Witness Printer took 199.04 ms. Allocated memory is still 291.5 MB. Free memory was 238.1 MB in the beginning and 222.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() 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)) || (((10 <= a28 && 8 <= a17) && a17 <= 8) && a28 <= 10)) || ((a11 == 1 && 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)) || (((10 <= a28 && 8 <= a17) && a17 <= 8) && a28 <= 10)) || ((a11 == 1 && 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: 7.8s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 512 SDtfs, 529 SDslu, 41 SDs, 0 SdLazy, 1832 SolverSat, 480 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 543 GetRequests, 526 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1203occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 400 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 103 HoareAnnotationTreeSize, 3 FomulaSimplifications, 804 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 180 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1334 NumberOfCodeBlocks, 1334 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1582 ConstructedInterpolants, 0 QuantifiedInterpolants, 609884 SizeOfPredicates, 2 NumberOfNonLiveVariables, 697 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 958/982 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...