./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label04.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_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label04.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/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 90b0cdc2fc90434e0a4f6271fb161422e9b25aee ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:50:06,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:50:06,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:50:06,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:50:06,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:50:06,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:50:06,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:50:06,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:50:06,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:50:06,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:50:06,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:50:06,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:50:06,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:50:06,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:50:06,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:50:06,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:50:06,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:50:06,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:50:06,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:50:06,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:50:06,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:50:06,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:50:06,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:50:06,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:50:06,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:50:06,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:50:06,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:50:06,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:50:06,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:50:06,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:50:06,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:50:06,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:50:06,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:50:06,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:50:06,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:50:06,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:50:06,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:50:06,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:50:06,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:50:06,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:50:06,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:50:06,800 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:50:06,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:50:06,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:50:06,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:50:06,833 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:50:06,833 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:50:06,833 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:50:06,834 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:50:06,834 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:50:06,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:50:06,834 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:50:06,835 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:50:06,835 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:50:06,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:50:06,836 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:50:06,836 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:50:06,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:50:06,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:50:06,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:50:06,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:50:06,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:50:06,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:50:06,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:50:06,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:50:06,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:50:06,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:50:06,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:50:06,840 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:50:06,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:50:06,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:50:06,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:50:06,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:50:06,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:50:06,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:50:06,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:50:06,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:50:06,846 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:50:06,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:50:06,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:50:06,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:50:06,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:50:06,849 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_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90b0cdc2fc90434e0a4f6271fb161422e9b25aee [2020-11-30 02:50:07,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:50:07,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:50:07,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:50:07,231 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:50:07,234 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:50:07,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label04.c [2020-11-30 02:50:07,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/bin/utaipan/data/c3b7ca1a5/f6a1d66d9aa2488ea1e3959eb43f3154/FLAG5e3b9b0fe [2020-11-30 02:50:07,919 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:50:07,919 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/sv-benchmarks/c/eca-rers2012/Problem02_label04.c [2020-11-30 02:50:07,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/bin/utaipan/data/c3b7ca1a5/f6a1d66d9aa2488ea1e3959eb43f3154/FLAG5e3b9b0fe [2020-11-30 02:50:08,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/bin/utaipan/data/c3b7ca1a5/f6a1d66d9aa2488ea1e3959eb43f3154 [2020-11-30 02:50:08,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:50:08,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:50:08,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:50:08,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:50:08,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:50:08,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:50:08" (1/1) ... [2020-11-30 02:50:08,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb2803e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08, skipping insertion in model container [2020-11-30 02:50:08,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:50:08" (1/1) ... [2020-11-30 02:50:08,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:50:08,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:50:08,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:50:08,709 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:50:08,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:50:08,857 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:50:08,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08 WrapperNode [2020-11-30 02:50:08,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:50:08,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:50:08,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:50:08,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:50:08,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08" (1/1) ... [2020-11-30 02:50:08,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08" (1/1) ... [2020-11-30 02:50:08,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:50:08,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:50:08,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:50:08,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:50:09,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08" (1/1) ... [2020-11-30 02:50:09,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08" (1/1) ... [2020-11-30 02:50:09,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08" (1/1) ... [2020-11-30 02:50:09,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08" (1/1) ... [2020-11-30 02:50:09,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08" (1/1) ... [2020-11-30 02:50:09,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08" (1/1) ... [2020-11-30 02:50:09,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08" (1/1) ... [2020-11-30 02:50:09,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:50:09,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:50:09,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:50:09,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:50:09,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/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 [2020-11-30 02:50:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:50:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:50:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:50:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:50:12,581 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:50:12,581 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:50:12,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:50:12 BoogieIcfgContainer [2020-11-30 02:50:12,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:50:12,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:50:12,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:50:12,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:50:12,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:50:08" (1/3) ... [2020-11-30 02:50:12,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10185850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:50:12, skipping insertion in model container [2020-11-30 02:50:12,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:50:08" (2/3) ... [2020-11-30 02:50:12,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10185850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:50:12, skipping insertion in model container [2020-11-30 02:50:12,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:50:12" (3/3) ... [2020-11-30 02:50:12,600 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2020-11-30 02:50:12,617 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:50:12,622 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:50:12,637 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:50:12,678 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:50:12,678 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:50:12,679 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:50:12,679 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:50:12,679 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:50:12,679 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:50:12,680 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:50:12,680 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:50:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-30 02:50:12,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-30 02:50:12,716 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:50:12,717 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] [2020-11-30 02:50:12,718 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:50:12,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:50:12,728 INFO L82 PathProgramCache]: Analyzing trace with hash -216550518, now seen corresponding path program 1 times [2020-11-30 02:50:12,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:50:12,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125387981] [2020-11-30 02:50:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:50:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:50:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:50:13,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125387981] [2020-11-30 02:50:13,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:50:13,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:50:13,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630716430] [2020-11-30 02:50:13,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:50:13,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:50:13,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:50:13,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:50:13,265 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-30 02:50:14,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:50:14,129 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-30 02:50:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:50:14,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-30 02:50:14,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:50:14,153 INFO L225 Difference]: With dead ends: 251 [2020-11-30 02:50:14,154 INFO L226 Difference]: Without dead ends: 163 [2020-11-30 02:50:14,161 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 [2020-11-30 02:50:14,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-30 02:50:14,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-30 02:50:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-30 02:50:14,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-11-30 02:50:14,282 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-11-30 02:50:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:50:14,285 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-11-30 02:50:14,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:50:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-11-30 02:50:14,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-30 02:50:14,295 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:50:14,296 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] [2020-11-30 02:50:14,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:50:14,297 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:50:14,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:50:14,301 INFO L82 PathProgramCache]: Analyzing trace with hash -215862444, now seen corresponding path program 1 times [2020-11-30 02:50:14,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:50:14,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108058647] [2020-11-30 02:50:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:50:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:50:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:50:14,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108058647] [2020-11-30 02:50:14,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:50:14,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:50:14,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548230586] [2020-11-30 02:50:14,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:50:14,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:50:14,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:50:14,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:50:14,450 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-11-30 02:50:14,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:50:14,826 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-11-30 02:50:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:50:14,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-30 02:50:14,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:50:14,830 INFO L225 Difference]: With dead ends: 325 [2020-11-30 02:50:14,831 INFO L226 Difference]: Without dead ends: 163 [2020-11-30 02:50:14,833 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 [2020-11-30 02:50:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-30 02:50:14,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-30 02:50:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-30 02:50:14,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-11-30 02:50:14,865 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-11-30 02:50:14,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:50:14,866 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-11-30 02:50:14,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:50:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-11-30 02:50:14,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-30 02:50:14,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:50:14,872 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] [2020-11-30 02:50:14,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:50:14,873 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:50:14,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:50:14,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1467813991, now seen corresponding path program 1 times [2020-11-30 02:50:14,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:50:14,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267907389] [2020-11-30 02:50:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:50:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:50:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:50:14,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267907389] [2020-11-30 02:50:14,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:50:14,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:50:15,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791822943] [2020-11-30 02:50:15,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:50:15,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:50:15,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:50:15,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:50:15,010 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-11-30 02:50:15,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:50:15,618 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2020-11-30 02:50:15,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:50:15,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-30 02:50:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:50:15,623 INFO L225 Difference]: With dead ends: 485 [2020-11-30 02:50:15,623 INFO L226 Difference]: Without dead ends: 323 [2020-11-30 02:50:15,625 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 [2020-11-30 02:50:15,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-30 02:50:15,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-11-30 02:50:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-30 02:50:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-11-30 02:50:15,646 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2020-11-30 02:50:15,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:50:15,646 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-11-30 02:50:15,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:50:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-11-30 02:50:15,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-30 02:50:15,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:50:15,651 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] [2020-11-30 02:50:15,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:50:15,651 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:50:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:50:15,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1373204098, now seen corresponding path program 1 times [2020-11-30 02:50:15,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:50:15,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21157757] [2020-11-30 02:50:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:50:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:50:15,757 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:50:15,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21157757] [2020-11-30 02:50:15,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:50:15,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:50:15,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359292182] [2020-11-30 02:50:15,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:50:15,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:50:15,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:50:15,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:50:15,760 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-11-30 02:50:16,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:50:16,358 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-11-30 02:50:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:50:16,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-30 02:50:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:50:16,361 INFO L225 Difference]: With dead ends: 565 [2020-11-30 02:50:16,361 INFO L226 Difference]: Without dead ends: 323 [2020-11-30 02:50:16,363 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 [2020-11-30 02:50:16,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-30 02:50:16,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-30 02:50:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-30 02:50:16,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-11-30 02:50:16,386 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-11-30 02:50:16,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:50:16,386 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-11-30 02:50:16,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:50:16,387 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-11-30 02:50:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-30 02:50:16,391 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:50:16,391 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] [2020-11-30 02:50:16,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:50:16,392 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:50:16,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:50:16,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1280995148, now seen corresponding path program 1 times [2020-11-30 02:50:16,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:50:16,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903321112] [2020-11-30 02:50:16,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:50:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:50:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:50:16,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903321112] [2020-11-30 02:50:16,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553612884] [2020-11-30 02:50:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/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 [2020-11-30 02:50:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:50:16,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:50:16,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:50:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:50:17,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:50:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:50:17,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:50:17,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-30 02:50:17,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815153099] [2020-11-30 02:50:17,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:50:17,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:50:17,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:50:17,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:50:17,244 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-11-30 02:50:18,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:50:18,025 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2020-11-30 02:50:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:50:18,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-30 02:50:18,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:50:18,031 INFO L225 Difference]: With dead ends: 885 [2020-11-30 02:50:18,031 INFO L226 Difference]: Without dead ends: 563 [2020-11-30 02:50:18,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:50:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-30 02:50:18,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2020-11-30 02:50:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-30 02:50:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 683 transitions. [2020-11-30 02:50:18,067 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 683 transitions. Word has length 107 [2020-11-30 02:50:18,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:50:18,068 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 683 transitions. [2020-11-30 02:50:18,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:50:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 683 transitions. [2020-11-30 02:50:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-30 02:50:18,075 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:50:18,075 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] [2020-11-30 02:50:18,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:50:18,299 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:50:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:50:18,300 INFO L82 PathProgramCache]: Analyzing trace with hash 441517974, now seen corresponding path program 1 times [2020-11-30 02:50:18,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:50:18,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319400878] [2020-11-30 02:50:18,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:50:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:50:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 02:50:18,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319400878] [2020-11-30 02:50:18,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:50:18,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:50:18,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932187731] [2020-11-30 02:50:18,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:50:18,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:50:18,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:50:18,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:50:18,409 INFO L87 Difference]: Start difference. First operand 483 states and 683 transitions. Second operand 3 states. [2020-11-30 02:50:19,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:50:19,005 INFO L93 Difference]: Finished difference Result 1205 states and 1716 transitions. [2020-11-30 02:50:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:50:19,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-30 02:50:19,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:50:19,011 INFO L225 Difference]: With dead ends: 1205 [2020-11-30 02:50:19,012 INFO L226 Difference]: Without dead ends: 723 [2020-11-30 02:50:19,013 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 [2020-11-30 02:50:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-11-30 02:50:19,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-11-30 02:50:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-30 02:50:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 954 transitions. [2020-11-30 02:50:19,067 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 954 transitions. Word has length 111 [2020-11-30 02:50:19,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:50:19,067 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 954 transitions. [2020-11-30 02:50:19,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:50:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 954 transitions. [2020-11-30 02:50:19,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-30 02:50:19,079 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:50:19,079 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-30 02:50:19,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:50:19,080 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:50:19,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:50:19,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1265125640, now seen corresponding path program 1 times [2020-11-30 02:50:19,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:50:19,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873928297] [2020-11-30 02:50:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:50:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:50:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:50:19,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873928297] [2020-11-30 02:50:19,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:50:19,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:50:19,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814192964] [2020-11-30 02:50:19,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:50:19,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:50:19,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:50:19,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:50:19,263 INFO L87 Difference]: Start difference. First operand 723 states and 954 transitions. Second operand 3 states. [2020-11-30 02:50:19,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:50:19,823 INFO L93 Difference]: Finished difference Result 1605 states and 2097 transitions. [2020-11-30 02:50:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:50:19,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-30 02:50:19,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:50:19,833 INFO L225 Difference]: With dead ends: 1605 [2020-11-30 02:50:19,833 INFO L226 Difference]: Without dead ends: 723 [2020-11-30 02:50:19,835 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 [2020-11-30 02:50:19,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-11-30 02:50:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2020-11-30 02:50:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-30 02:50:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 784 transitions. [2020-11-30 02:50:19,864 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 784 transitions. Word has length 171 [2020-11-30 02:50:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:50:19,865 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 784 transitions. [2020-11-30 02:50:19,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:50:19,865 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 784 transitions. [2020-11-30 02:50:19,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-30 02:50:19,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:50:19,870 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-11-30 02:50:19,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:50:19,870 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:50:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:50:19,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1466311697, now seen corresponding path program 1 times [2020-11-30 02:50:19,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:50:19,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966214216] [2020-11-30 02:50:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:50:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:50:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-11-30 02:50:20,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966214216] [2020-11-30 02:50:20,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:50:20,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:50:20,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430069893] [2020-11-30 02:50:20,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:50:20,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:50:20,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:50:20,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:50:20,024 INFO L87 Difference]: Start difference. First operand 643 states and 784 transitions. Second operand 3 states. [2020-11-30 02:50:20,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:50:20,598 INFO L93 Difference]: Finished difference Result 1605 states and 1979 transitions. [2020-11-30 02:50:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:50:20,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-11-30 02:50:20,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:50:20,604 INFO L225 Difference]: With dead ends: 1605 [2020-11-30 02:50:20,605 INFO L226 Difference]: Without dead ends: 803 [2020-11-30 02:50:20,606 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 [2020-11-30 02:50:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-30 02:50:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2020-11-30 02:50:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-30 02:50:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 810 transitions. [2020-11-30 02:50:20,629 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 810 transitions. Word has length 181 [2020-11-30 02:50:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:50:20,630 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 810 transitions. [2020-11-30 02:50:20,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:50:20,630 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 810 transitions. [2020-11-30 02:50:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-11-30 02:50:20,635 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:50:20,635 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 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] [2020-11-30 02:50:20,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:50:20,635 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:50:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:50:20,636 INFO L82 PathProgramCache]: Analyzing trace with hash -7923098, now seen corresponding path program 1 times [2020-11-30 02:50:20,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:50:20,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253759690] [2020-11-30 02:50:20,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:50:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:50:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 142 proven. 8 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-11-30 02:50:20,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253759690] [2020-11-30 02:50:20,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104289554] [2020-11-30 02:50:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/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 [2020-11-30 02:50:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:50:21,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:50:21,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:50:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-11-30 02:50:21,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:50:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-11-30 02:50:21,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:50:21,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-30 02:50:21,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829849200] [2020-11-30 02:50:21,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:50:21,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:50:21,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:50:21,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:50:21,274 INFO L87 Difference]: Start difference. First operand 723 states and 810 transitions. Second operand 3 states. [2020-11-30 02:50:21,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:50:21,689 INFO L93 Difference]: Finished difference Result 1683 states and 1884 transitions. [2020-11-30 02:50:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:50:21,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-11-30 02:50:21,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:50:21,690 INFO L225 Difference]: With dead ends: 1683 [2020-11-30 02:50:21,690 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:50:21,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:50:21,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:50:21,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:50:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:50:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:50:21,694 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 217 [2020-11-30 02:50:21,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:50:21,699 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:50:21,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:50:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:50:21,699 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:50:21,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:50:21,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:50:22,091 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2020-11-30 02:50:22,220 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2020-11-30 02:50:22,225 INFO L274 CegarLoopResult]: For program point L499-1(lines 39 608) no Hoare annotation was computed. [2020-11-30 02:50:22,225 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-30 02:50:22,225 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-30 02:50:22,225 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-30 02:50:22,225 INFO L274 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-11-30 02:50:22,225 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-30 02:50:22,225 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-30 02:50:22,226 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-30 02:50:22,226 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-30 02:50:22,226 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-30 02:50:22,226 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-30 02:50:22,226 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-30 02:50:22,226 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-30 02:50:22,226 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-30 02:50:22,226 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-30 02:50:22,226 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-30 02:50:22,226 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-30 02:50:22,227 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-30 02:50:22,227 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-30 02:50:22,227 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-30 02:50:22,227 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-30 02:50:22,227 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-30 02:50:22,227 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-30 02:50:22,227 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-30 02:50:22,227 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-30 02:50:22,227 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-30 02:50:22,227 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-30 02:50:22,228 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-30 02:50:22,228 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:50:22,228 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-30 02:50:22,228 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-30 02:50:22,228 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-30 02:50:22,228 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-30 02:50:22,228 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-30 02:50:22,228 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-30 02:50:22,228 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-30 02:50:22,228 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-30 02:50:22,228 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-30 02:50:22,229 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:50:22,229 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-30 02:50:22,229 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-30 02:50:22,229 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-30 02:50:22,229 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-30 02:50:22,229 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-30 02:50:22,229 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-30 02:50:22,229 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-30 02:50:22,229 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-30 02:50:22,229 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-30 02:50:22,230 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-30 02:50:22,230 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-30 02:50:22,230 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-30 02:50:22,230 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-30 02:50:22,230 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-30 02:50:22,230 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-30 02:50:22,232 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-30 02:50:22,233 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse3 (<= 8 ~a17~0)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and (<= 10 ~a28~0) .cse0 .cse1) (and (<= ~a19~0 0) .cse2 .cse1) (and .cse3 .cse2 .cse1) (and (<= ~a28~0 7) .cse2) (and .cse4 .cse0 .cse1) (and (= ~a19~0 1) .cse3 .cse4 .cse2))) [2020-11-30 02:50:22,234 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-30 02:50:22,234 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-30 02:50:22,234 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-30 02:50:22,236 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-30 02:50:22,236 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-30 02:50:22,236 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-30 02:50:22,236 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-30 02:50:22,237 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-30 02:50:22,237 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:50:22,237 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-30 02:50:22,238 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-30 02:50:22,239 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse3 (<= 8 ~a17~0)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and (<= 10 ~a28~0) .cse0 .cse1) (and (<= ~a19~0 0) .cse2 .cse1) (and .cse3 .cse2 .cse1) (and (<= ~a28~0 7) .cse2) (and .cse4 .cse0 .cse1) (and (= ~a19~0 1) .cse3 .cse4 .cse2))) [2020-11-30 02:50:22,240 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-30 02:50:22,240 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-30 02:50:22,240 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-30 02:50:22,240 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-30 02:50:22,240 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-30 02:50:22,240 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-30 02:50:22,240 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-30 02:50:22,241 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-30 02:50:22,241 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-30 02:50:22,241 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-30 02:50:22,241 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-30 02:50:22,241 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-30 02:50:22,241 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-30 02:50:22,241 INFO L274 CegarLoopResult]: For program point L496-1(lines 39 608) no Hoare annotation was computed. [2020-11-30 02:50:22,242 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-30 02:50:22,242 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-30 02:50:22,242 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-30 02:50:22,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:50:22 BoogieIcfgContainer [2020-11-30 02:50:22,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:50:22,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:50:22,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:50:22,289 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:50:22,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:50:12" (3/4) ... [2020-11-30 02:50:22,296 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:50:22,328 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-30 02:50:22,335 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-30 02:50:22,337 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 02:50:22,339 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:50:22,564 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4e95b20a-548d-4fd5-89cb-2c0ff57d68f7/bin/utaipan/witness.graphml [2020-11-30 02:50:22,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:50:22,566 INFO L168 Benchmark]: Toolchain (without parser) took 14396.23 ms. Allocated memory was 81.8 MB in the beginning and 237.0 MB in the end (delta: 155.2 MB). Free memory was 47.9 MB in the beginning and 196.4 MB in the end (delta: -148.5 MB). Peak memory consumption was 135.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:50:22,567 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 56.4 MB in the beginning and 56.3 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:50:22,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.97 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 47.8 MB in the beginning and 60.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:50:22,573 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.18 ms. Allocated memory is still 98.6 MB. Free memory was 60.5 MB in the beginning and 54.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:50:22,573 INFO L168 Benchmark]: Boogie Preprocessor took 74.35 ms. Allocated memory is still 98.6 MB. Free memory was 54.8 MB in the beginning and 50.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:50:22,574 INFO L168 Benchmark]: RCFGBuilder took 3521.61 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 50.6 MB in the beginning and 88.6 MB in the end (delta: -38.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:50:22,574 INFO L168 Benchmark]: TraceAbstraction took 9697.77 ms. Allocated memory was 119.5 MB in the beginning and 237.0 MB in the end (delta: 117.4 MB). Free memory was 88.5 MB in the beginning and 77.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 128.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:50:22,575 INFO L168 Benchmark]: Witness Printer took 276.38 ms. Allocated memory is still 237.0 MB. Free memory was 77.3 MB in the beginning and 196.4 MB in the end (delta: -119.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:50:22,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 56.4 MB in the beginning and 56.3 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 686.97 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 47.8 MB in the beginning and 60.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 127.18 ms. Allocated memory is still 98.6 MB. Free memory was 60.5 MB in the beginning and 54.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.35 ms. Allocated memory is still 98.6 MB. Free memory was 54.8 MB in the beginning and 50.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3521.61 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 50.6 MB in the beginning and 88.6 MB in the end (delta: -38.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9697.77 ms. Allocated memory was 119.5 MB in the beginning and 237.0 MB in the end (delta: 117.4 MB). Free memory was 88.5 MB in the beginning and 77.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 128.6 MB. Max. memory is 16.1 GB. * Witness Printer took 276.38 ms. Allocated memory is still 237.0 MB. Free memory was 77.3 MB in the beginning and 196.4 MB in the end (delta: -119.1 MB). Peak memory consumption was 9.9 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: ((((((10 <= a28 && a17 <= 7) && a28 <= 10) || ((a19 <= 0 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((a25 == 1 && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((10 <= a28 && a17 <= 7) && a28 <= 10) || ((a19 <= 0 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((a25 == 1 && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.2s, OverallIterations: 9, TraceHistogramMax: 7, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 640 SDtfs, 563 SDslu, 40 SDs, 0 SdLazy, 1844 SolverSat, 491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 669 GetRequests, 653 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 320 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 123 HoareAnnotationTreeSize, 3 FomulaSimplifications, 610 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1483 NumberOfCodeBlocks, 1483 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1794 ConstructedInterpolants, 0 QuantifiedInterpolants, 669196 SizeOfPredicates, 1 NumberOfNonLiveVariables, 748 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 1494/1518 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...