./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/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 40a1e4973a5bf53655cfcab4993cc11275e56426 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:15:18,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:15:18,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:15:18,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:15:18,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:15:18,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:15:18,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:15:18,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:15:18,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:15:18,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:15:18,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:15:18,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:15:18,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:15:18,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:15:18,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:15:18,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:15:18,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:15:18,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:15:18,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:15:18,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:15:18,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:15:18,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:15:18,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:15:18,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:15:18,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:15:18,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:15:18,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:15:18,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:15:18,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:15:18,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:15:18,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:15:18,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:15:18,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:15:18,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:15:18,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:15:18,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:15:18,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:15:18,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:15:18,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:15:18,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:15:18,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:15:18,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:15:18,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:15:18,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:15:18,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:15:18,866 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:15:18,866 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:15:18,866 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:15:18,867 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:15:18,867 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:15:18,867 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:15:18,867 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:15:18,867 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:15:18,867 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:15:18,867 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:15:18,868 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:15:18,868 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:15:18,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:15:18,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:15:18,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:15:18,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:15:18,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:15:18,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:15:18,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:15:18,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:15:18,869 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:15:18,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:15:18,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:15:18,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:15:18,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:15:18,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:15:18,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:15:18,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:15:18,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:15:18,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:15:18,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:15:18,871 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:15:18,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:15:18,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:15:18,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:15:18,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:15:18,871 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_e0b8fe3c-61d1-487b-adef-635e7979a5f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40a1e4973a5bf53655cfcab4993cc11275e56426 [2020-12-09 08:15:19,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:15:19,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:15:19,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:15:19,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:15:19,071 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:15:19,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c [2020-12-09 08:15:19,111 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/data/d6372d00a/ce0f59dcc33b45b9b01a388db3d3c506/FLAGb81e2716f [2020-12-09 08:15:19,569 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:15:19,569 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/sv-benchmarks/c/eca-rers2012/Problem01_label48.c [2020-12-09 08:15:19,578 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/data/d6372d00a/ce0f59dcc33b45b9b01a388db3d3c506/FLAGb81e2716f [2020-12-09 08:15:19,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/data/d6372d00a/ce0f59dcc33b45b9b01a388db3d3c506 [2020-12-09 08:15:19,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:15:19,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:15:19,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:15:19,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:15:19,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:15:19,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:15:19" (1/1) ... [2020-12-09 08:15:19,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e6fba91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19, skipping insertion in model container [2020-12-09 08:15:19,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:15:19" (1/1) ... [2020-12-09 08:15:19,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:15:19,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:15:19,876 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/sv-benchmarks/c/eca-rers2012/Problem01_label48.c[20593,20606] [2020-12-09 08:15:19,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:15:19,895 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:15:19,945 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/sv-benchmarks/c/eca-rers2012/Problem01_label48.c[20593,20606] [2020-12-09 08:15:19,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:15:19,961 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:15:19,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19 WrapperNode [2020-12-09 08:15:19,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:15:19,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:15:19,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:15:19,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:15:19,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19" (1/1) ... [2020-12-09 08:15:19,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19" (1/1) ... [2020-12-09 08:15:20,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:15:20,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:15:20,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:15:20,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:15:20,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19" (1/1) ... [2020-12-09 08:15:20,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19" (1/1) ... [2020-12-09 08:15:20,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19" (1/1) ... [2020-12-09 08:15:20,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19" (1/1) ... [2020-12-09 08:15:20,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19" (1/1) ... [2020-12-09 08:15:20,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19" (1/1) ... [2020-12-09 08:15:20,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19" (1/1) ... [2020-12-09 08:15:20,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:15:20,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:15:20,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:15:20,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:15:20,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:15:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:15:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:15:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:15:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:15:21,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:15:21,432 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 08:15:21,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:15:21 BoogieIcfgContainer [2020-12-09 08:15:21,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:15:21,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:15:21,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:15:21,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:15:21,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:15:19" (1/3) ... [2020-12-09 08:15:21,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca3ccc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:15:21, skipping insertion in model container [2020-12-09 08:15:21,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:19" (2/3) ... [2020-12-09 08:15:21,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca3ccc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:15:21, skipping insertion in model container [2020-12-09 08:15:21,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:15:21" (3/3) ... [2020-12-09 08:15:21,442 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label48.c [2020-12-09 08:15:21,454 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:15:21,457 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 08:15:21,464 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 08:15:21,481 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:15:21,481 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:15:21,481 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:15:21,481 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:15:21,481 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:15:21,481 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:15:21,481 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:15:21,481 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:15:21,491 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 08:15:21,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 08:15:21,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:21,497 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] [2020-12-09 08:15:21,497 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:15:21,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:21,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1806906712, now seen corresponding path program 1 times [2020-12-09 08:15:21,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:21,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005691853] [2020-12-09 08:15:21,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:21,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005691853] [2020-12-09 08:15:21,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:21,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:15:21,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025100575] [2020-12-09 08:15:21,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:15:21,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:21,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:15:21,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:15:21,767 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 08:15:22,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:22,100 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 08:15:22,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:15:22,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 08:15:22,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:22,110 INFO L225 Difference]: With dead ends: 224 [2020-12-09 08:15:22,110 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 08:15:22,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:15:22,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 08:15:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 08:15:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 08:15:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-12-09 08:15:22,147 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-12-09 08:15:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:22,148 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-12-09 08:15:22,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:15:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-12-09 08:15:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 08:15:22,151 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:22,151 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 08:15:22,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 08:15:22,151 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:15:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:22,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1034851205, now seen corresponding path program 1 times [2020-12-09 08:15:22,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:22,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262665386] [2020-12-09 08:15:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:22,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262665386] [2020-12-09 08:15:22,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:22,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:15:22,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106860826] [2020-12-09 08:15:22,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:15:22,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:22,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:15:22,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:15:22,195 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-12-09 08:15:22,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:22,456 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-12-09 08:15:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:15:22,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 08:15:22,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:22,460 INFO L225 Difference]: With dead ends: 431 [2020-12-09 08:15:22,460 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 08:15:22,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:15:22,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 08:15:22,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-09 08:15:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 08:15:22,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2020-12-09 08:15:22,485 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2020-12-09 08:15:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:22,485 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2020-12-09 08:15:22,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:15:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2020-12-09 08:15:22,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 08:15:22,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:22,488 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 08:15:22,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 08:15:22,489 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:15:22,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:22,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1703771847, now seen corresponding path program 1 times [2020-12-09 08:15:22,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:22,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848965234] [2020-12-09 08:15:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:22,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848965234] [2020-12-09 08:15:22,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:22,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:15:22,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617929844] [2020-12-09 08:15:22,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:15:22,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:22,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:15:22,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:15:22,638 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand 4 states. [2020-12-09 08:15:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:22,995 INFO L93 Difference]: Finished difference Result 784 states and 1255 transitions. [2020-12-09 08:15:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:15:22,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-09 08:15:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:22,998 INFO L225 Difference]: With dead ends: 784 [2020-12-09 08:15:22,998 INFO L226 Difference]: Without dead ends: 429 [2020-12-09 08:15:22,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:15:23,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-12-09 08:15:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-12-09 08:15:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-12-09 08:15:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 557 transitions. [2020-12-09 08:15:23,019 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 557 transitions. Word has length 78 [2020-12-09 08:15:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:23,019 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 557 transitions. [2020-12-09 08:15:23,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:15:23,019 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 557 transitions. [2020-12-09 08:15:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-09 08:15:23,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:23,021 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-09 08:15:23,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 08:15:23,022 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:15:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:23,022 INFO L82 PathProgramCache]: Analyzing trace with hash -494775730, now seen corresponding path program 1 times [2020-12-09 08:15:23,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:23,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771153547] [2020-12-09 08:15:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:23,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771153547] [2020-12-09 08:15:23,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:23,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:15:23,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873148972] [2020-12-09 08:15:23,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:15:23,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:23,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:15:23,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:15:23,089 INFO L87 Difference]: Start difference. First operand 429 states and 557 transitions. Second operand 4 states. [2020-12-09 08:15:23,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:23,374 INFO L93 Difference]: Finished difference Result 999 states and 1360 transitions. [2020-12-09 08:15:23,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:15:23,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-09 08:15:23,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:23,378 INFO L225 Difference]: With dead ends: 999 [2020-12-09 08:15:23,378 INFO L226 Difference]: Without dead ends: 642 [2020-12-09 08:15:23,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:15:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-12-09 08:15:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2020-12-09 08:15:23,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-12-09 08:15:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 851 transitions. [2020-12-09 08:15:23,398 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 851 transitions. Word has length 83 [2020-12-09 08:15:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:23,398 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 851 transitions. [2020-12-09 08:15:23,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:15:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 851 transitions. [2020-12-09 08:15:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-09 08:15:23,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:23,401 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2020-12-09 08:15:23,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 08:15:23,401 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:15:23,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:23,402 INFO L82 PathProgramCache]: Analyzing trace with hash -792259478, now seen corresponding path program 1 times [2020-12-09 08:15:23,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:23,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099226340] [2020-12-09 08:15:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 08:15:23,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099226340] [2020-12-09 08:15:23,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:23,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:15:23,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595224964] [2020-12-09 08:15:23,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:15:23,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:23,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:15:23,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:15:23,457 INFO L87 Difference]: Start difference. First operand 642 states and 851 transitions. Second operand 3 states. [2020-12-09 08:15:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:23,670 INFO L93 Difference]: Finished difference Result 1567 states and 2073 transitions. [2020-12-09 08:15:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:15:23,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-09 08:15:23,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:23,674 INFO L225 Difference]: With dead ends: 1567 [2020-12-09 08:15:23,675 INFO L226 Difference]: Without dead ends: 997 [2020-12-09 08:15:23,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:15:23,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-12-09 08:15:23,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 784. [2020-12-09 08:15:23,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-12-09 08:15:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1029 transitions. [2020-12-09 08:15:23,692 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1029 transitions. Word has length 92 [2020-12-09 08:15:23,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:23,692 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1029 transitions. [2020-12-09 08:15:23,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:15:23,692 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1029 transitions. [2020-12-09 08:15:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 08:15:23,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:23,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2020-12-09 08:15:23,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 08:15:23,694 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:15:23,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:23,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1114803877, now seen corresponding path program 1 times [2020-12-09 08:15:23,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:23,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034249082] [2020-12-09 08:15:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:23,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034249082] [2020-12-09 08:15:23,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:23,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:15:23,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451233734] [2020-12-09 08:15:23,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:15:23,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:23,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:15:23,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:15:23,735 INFO L87 Difference]: Start difference. First operand 784 states and 1029 transitions. Second operand 4 states. [2020-12-09 08:15:24,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:24,081 INFO L93 Difference]: Finished difference Result 1709 states and 2302 transitions. [2020-12-09 08:15:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:15:24,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-12-09 08:15:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:24,086 INFO L225 Difference]: With dead ends: 1709 [2020-12-09 08:15:24,086 INFO L226 Difference]: Without dead ends: 997 [2020-12-09 08:15:24,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:15:24,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-12-09 08:15:24,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2020-12-09 08:15:24,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-12-09 08:15:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1202 transitions. [2020-12-09 08:15:24,104 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1202 transitions. Word has length 98 [2020-12-09 08:15:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:24,105 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1202 transitions. [2020-12-09 08:15:24,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:15:24,105 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1202 transitions. [2020-12-09 08:15:24,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-09 08:15:24,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:24,107 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:15:24,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 08:15:24,107 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:15:24,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:24,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1651485128, now seen corresponding path program 1 times [2020-12-09 08:15:24,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:24,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35792595] [2020-12-09 08:15:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 08:15:24,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35792595] [2020-12-09 08:15:24,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:24,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:15:24,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036325693] [2020-12-09 08:15:24,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:15:24,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:24,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:15:24,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:15:24,179 INFO L87 Difference]: Start difference. First operand 926 states and 1202 transitions. Second operand 4 states. [2020-12-09 08:15:24,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:24,509 INFO L93 Difference]: Finished difference Result 1993 states and 2589 transitions. [2020-12-09 08:15:24,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:15:24,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-12-09 08:15:24,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:24,516 INFO L225 Difference]: With dead ends: 1993 [2020-12-09 08:15:24,516 INFO L226 Difference]: Without dead ends: 1139 [2020-12-09 08:15:24,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:15:24,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-12-09 08:15:24,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2020-12-09 08:15:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-12-09 08:15:24,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1363 transitions. [2020-12-09 08:15:24,543 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1363 transitions. Word has length 112 [2020-12-09 08:15:24,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:24,544 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1363 transitions. [2020-12-09 08:15:24,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:15:24,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1363 transitions. [2020-12-09 08:15:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-09 08:15:24,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:24,546 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:15:24,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 08:15:24,546 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:15:24,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:24,546 INFO L82 PathProgramCache]: Analyzing trace with hash -758588099, now seen corresponding path program 1 times [2020-12-09 08:15:24,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:24,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196748702] [2020-12-09 08:15:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:24,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196748702] [2020-12-09 08:15:24,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:24,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:15:24,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564748262] [2020-12-09 08:15:24,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:15:24,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:24,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:15:24,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:15:24,615 INFO L87 Difference]: Start difference. First operand 1068 states and 1363 transitions. Second operand 4 states. [2020-12-09 08:15:24,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:24,938 INFO L93 Difference]: Finished difference Result 2277 states and 2909 transitions. [2020-12-09 08:15:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:15:24,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-12-09 08:15:24,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:24,945 INFO L225 Difference]: With dead ends: 2277 [2020-12-09 08:15:24,945 INFO L226 Difference]: Without dead ends: 1281 [2020-12-09 08:15:24,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:15:24,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-09 08:15:24,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 997. [2020-12-09 08:15:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-09 08:15:24,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1203 transitions. [2020-12-09 08:15:24,972 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1203 transitions. Word has length 129 [2020-12-09 08:15:24,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:24,972 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1203 transitions. [2020-12-09 08:15:24,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:15:24,972 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1203 transitions. [2020-12-09 08:15:24,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-09 08:15:24,974 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:24,974 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:15:24,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 08:15:24,974 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:15:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:24,975 INFO L82 PathProgramCache]: Analyzing trace with hash 811344603, now seen corresponding path program 1 times [2020-12-09 08:15:24,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:24,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485781465] [2020-12-09 08:15:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 08:15:25,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485781465] [2020-12-09 08:15:25,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:25,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:15:25,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292928871] [2020-12-09 08:15:25,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:15:25,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:25,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:15:25,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:15:25,049 INFO L87 Difference]: Start difference. First operand 997 states and 1203 transitions. Second operand 3 states. [2020-12-09 08:15:25,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:25,260 INFO L93 Difference]: Finished difference Result 2135 states and 2589 transitions. [2020-12-09 08:15:25,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:15:25,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2020-12-09 08:15:25,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:25,265 INFO L225 Difference]: With dead ends: 2135 [2020-12-09 08:15:25,265 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 08:15:25,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:15:25,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 08:15:25,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2020-12-09 08:15:25,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 08:15:25,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1359 transitions. [2020-12-09 08:15:25,286 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1359 transitions. Word has length 172 [2020-12-09 08:15:25,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:25,286 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1359 transitions. [2020-12-09 08:15:25,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:15:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1359 transitions. [2020-12-09 08:15:25,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-12-09 08:15:25,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:25,289 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 08:15:25,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 08:15:25,290 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:15:25,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:25,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1579923804, now seen corresponding path program 1 times [2020-12-09 08:15:25,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:25,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693456508] [2020-12-09 08:15:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 121 proven. 64 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-09 08:15:25,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693456508] [2020-12-09 08:15:25,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018639632] [2020-12-09 08:15:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:15:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:25,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 08:15:25,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:15:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-09 08:15:25,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:15:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-09 08:15:25,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 08:15:25,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 08:15:25,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914603773] [2020-12-09 08:15:25,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:15:25,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:25,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:15:25,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:15:25,918 INFO L87 Difference]: Start difference. First operand 1139 states and 1359 transitions. Second operand 3 states. [2020-12-09 08:15:26,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:26,146 INFO L93 Difference]: Finished difference Result 2561 states and 3082 transitions. [2020-12-09 08:15:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:15:26,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-12-09 08:15:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:26,151 INFO L225 Difference]: With dead ends: 2561 [2020-12-09 08:15:26,151 INFO L226 Difference]: Without dead ends: 1352 [2020-12-09 08:15:26,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:15:26,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-12-09 08:15:26,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1281. [2020-12-09 08:15:26,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-12-09 08:15:26,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1510 transitions. [2020-12-09 08:15:26,173 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1510 transitions. Word has length 194 [2020-12-09 08:15:26,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:26,173 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1510 transitions. [2020-12-09 08:15:26,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:15:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1510 transitions. [2020-12-09 08:15:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-09 08:15:26,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:26,176 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 08:15:26,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 08:15:26,377 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:15:26,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:26,379 INFO L82 PathProgramCache]: Analyzing trace with hash 922669153, now seen corresponding path program 1 times [2020-12-09 08:15:26,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:26,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060308480] [2020-12-09 08:15:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-12-09 08:15:26,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060308480] [2020-12-09 08:15:26,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:26,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:15:26,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268102001] [2020-12-09 08:15:26,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:15:26,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:26,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:15:26,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:15:26,585 INFO L87 Difference]: Start difference. First operand 1281 states and 1510 transitions. Second operand 3 states. [2020-12-09 08:15:26,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:26,805 INFO L93 Difference]: Finished difference Result 2701 states and 3185 transitions. [2020-12-09 08:15:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:15:26,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-12-09 08:15:26,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:26,807 INFO L225 Difference]: With dead ends: 2701 [2020-12-09 08:15:26,807 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 08:15:26,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:15:26,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 08:15:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 08:15:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 08:15:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 08:15:26,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 197 [2020-12-09 08:15:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:26,810 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 08:15:26,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:15:26,810 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 08:15:26,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 08:15:26,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 08:15:26,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 08:15:26,982 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-12-09 08:15:27,073 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 08:15:27,073 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 08:15:27,073 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 08:15:27,073 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 08:15:27,073 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 08:15:27,073 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 08:15:27,073 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 08:15:27,073 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 08:15:27,074 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 08:15:27,074 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 08:15:27,074 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 08:15:27,074 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 08:15:27,074 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 08:15:27,074 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 08:15:27,074 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 08:15:27,074 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 08:15:27,074 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 08:15:27,074 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 08:15:27,074 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 08:15:27,074 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 08:15:27,075 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 08:15:27,075 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 08:15:27,075 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 08:15:27,075 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 08:15:27,075 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 08:15:27,075 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 08:15:27,075 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 08:15:27,075 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 08:15:27,075 INFO L262 CegarLoopResult]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 08:15:27,075 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 08:15:27,075 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 08:15:27,075 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 08:15:27,076 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 08:15:27,076 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 08:15:27,076 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 08:15:27,076 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 08:15:27,076 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 08:15:27,076 INFO L262 CegarLoopResult]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 08:15:27,076 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 08:15:27,076 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 08:15:27,076 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 08:15:27,076 INFO L262 CegarLoopResult]: For program point L549(line 549) no Hoare annotation was computed. [2020-12-09 08:15:27,076 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 08:15:27,077 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (<= 15 ~a8~0)) (.cse3 (= ~a7~0 1)) (.cse2 (= ~a16~0 6)) (.cse0 (= ~a20~0 1))) (or (and (<= ~a16~0 5) (not .cse0)) (and .cse0 .cse1) (<= ~a16~0 4) (and .cse2 (not .cse3) .cse1) (and .cse3 .cse0) (and (= ~a21~0 1) .cse2 (= ~a12~0 8) .cse0 (= ~a17~0 1)))) [2020-12-09 08:15:27,077 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 08:15:27,077 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 08:15:27,077 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 08:15:27,077 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 08:15:27,077 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 08:15:27,077 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 08:15:27,078 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 08:15:27,078 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 08:15:27,078 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 08:15:27,078 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 08:15:27,078 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 08:15:27,078 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 08:15:27,078 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 08:15:27,078 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 08:15:27,078 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 08:15:27,078 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 08:15:27,078 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 08:15:27,079 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 08:15:27,079 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 08:15:27,079 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 08:15:27,079 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 08:15:27,079 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 08:15:27,079 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 08:15:27,079 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (<= 15 ~a8~0)) (.cse3 (= ~a7~0 1)) (.cse2 (= ~a16~0 6)) (.cse0 (= ~a20~0 1))) (or (and (<= ~a16~0 5) (not .cse0)) (and .cse0 .cse1) (<= ~a16~0 4) (and .cse2 (not .cse3) .cse1) (and .cse3 .cse0) (and (= ~a21~0 1) .cse2 (= ~a12~0 8) .cse0 (= ~a17~0 1)))) [2020-12-09 08:15:27,079 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 08:15:27,080 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 549) no Hoare annotation was computed. [2020-12-09 08:15:27,080 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 08:15:27,080 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 08:15:27,080 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 08:15:27,080 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 08:15:27,080 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 08:15:27,080 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 08:15:27,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:15:27 BoogieIcfgContainer [2020-12-09 08:15:27,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:15:27,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:15:27,094 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:15:27,094 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:15:27,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:15:21" (3/4) ... [2020-12-09 08:15:27,096 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 08:15:27,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-12-09 08:15:27,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 08:15:27,119 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 08:15:27,120 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 08:15:27,214 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e0b8fe3c-61d1-487b-adef-635e7979a5f6/bin/utaipan/witness.graphml [2020-12-09 08:15:27,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:15:27,215 INFO L168 Benchmark]: Toolchain (without parser) took 7619.36 ms. Allocated memory was 115.3 MB in the beginning and 251.7 MB in the end (delta: 136.3 MB). Free memory was 76.2 MB in the beginning and 171.2 MB in the end (delta: -95.0 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:27,215 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 115.3 MB. Free memory is still 94.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:15:27,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.92 ms. Allocated memory is still 115.3 MB. Free memory was 76.0 MB in the beginning and 74.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:27,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.64 ms. Allocated memory is still 115.3 MB. Free memory was 74.4 MB in the beginning and 68.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:27,216 INFO L168 Benchmark]: Boogie Preprocessor took 55.49 ms. Allocated memory is still 115.3 MB. Free memory was 68.7 MB in the beginning and 63.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:27,216 INFO L168 Benchmark]: RCFGBuilder took 1344.49 ms. Allocated memory was 115.3 MB in the beginning and 144.7 MB in the end (delta: 29.4 MB). Free memory was 63.9 MB in the beginning and 87.1 MB in the end (delta: -23.2 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:27,216 INFO L168 Benchmark]: TraceAbstraction took 5657.62 ms. Allocated memory was 144.7 MB in the beginning and 251.7 MB in the end (delta: 107.0 MB). Free memory was 86.1 MB in the beginning and 186.1 MB in the end (delta: -100.0 MB). Peak memory consumption was 123.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:27,216 INFO L168 Benchmark]: Witness Printer took 120.29 ms. Allocated memory is still 251.7 MB. Free memory was 186.1 MB in the beginning and 171.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:27,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 115.3 MB. Free memory is still 94.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.92 ms. Allocated memory is still 115.3 MB. Free memory was 76.0 MB in the beginning and 74.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.64 ms. Allocated memory is still 115.3 MB. Free memory was 74.4 MB in the beginning and 68.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.49 ms. Allocated memory is still 115.3 MB. Free memory was 68.7 MB in the beginning and 63.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1344.49 ms. Allocated memory was 115.3 MB in the beginning and 144.7 MB in the end (delta: 29.4 MB). Free memory was 63.9 MB in the beginning and 87.1 MB in the end (delta: -23.2 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5657.62 ms. Allocated memory was 144.7 MB in the beginning and 251.7 MB in the end (delta: 107.0 MB). Free memory was 86.1 MB in the beginning and 186.1 MB in the end (delta: -100.0 MB). Peak memory consumption was 123.4 MB. Max. memory is 16.1 GB. * Witness Printer took 120.29 ms. Allocated memory is still 251.7 MB. Free memory was 186.1 MB in the beginning and 171.2 MB in the end (delta: 14.8 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: 549]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((a16 <= 5 && !(a20 == 1)) || (a20 == 1 && 15 <= a8)) || a16 <= 4) || ((a16 == 6 && !(a7 == 1)) && 15 <= a8)) || (a7 == 1 && a20 == 1)) || ((((a21 == 1 && a16 == 6) && a12 == 8) && a20 == 1) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((a16 <= 5 && !(a20 == 1)) || (a20 == 1 && 15 <= a8)) || a16 <= 4) || ((a16 == 6 && !(a7 == 1)) && 15 <= a8)) || (a7 == 1 && a20 == 1)) || ((((a21 == 1 && a16 == 6) && a12 == 8) && a20 == 1) && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 569 SDtfs, 1013 SDslu, 55 SDs, 0 SdLazy, 2760 SolverSat, 709 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 421 GetRequests, 401 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=10, 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, 11 MinimizatonAttempts, 781 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 107 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1686 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 490 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1497 NumberOfCodeBlocks, 1497 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1678 ConstructedInterpolants, 0 QuantifiedInterpolants, 906012 SizeOfPredicates, 0 NumberOfNonLiveVariables, 447 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 1178/1242 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...