./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label14.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/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 2076015a5908970d35728e852c46f824d2f96c99 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:34:14,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:34:14,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:34:14,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:34:14,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:34:14,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:34:14,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:34:14,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:34:14,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:34:14,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:34:14,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:34:14,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:34:14,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:34:14,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:34:14,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:34:14,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:34:14,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:34:14,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:34:14,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:34:14,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:34:14,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:34:14,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:34:14,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:34:14,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:34:14,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:34:14,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:34:14,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:34:14,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:34:14,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:34:14,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:34:14,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:34:14,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:34:14,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:34:14,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:34:14,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:34:14,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:34:14,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:34:14,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:34:14,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:34:14,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:34:14,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:34:14,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:34:14,795 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:34:14,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:34:14,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:34:14,796 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:34:14,796 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:34:14,797 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:34:14,797 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:34:14,797 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:34:14,797 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:34:14,798 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:34:14,798 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:34:14,798 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:34:14,798 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:34:14,798 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:34:14,799 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:34:14,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:34:14,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:34:14,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:34:14,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:34:14,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:34:14,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:34:14,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:34:14,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:34:14,801 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:34:14,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:34:14,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:34:14,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:34:14,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:34:14,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:34:14,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:34:14,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:34:14,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:34:14,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:34:14,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:34:14,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:34:14,804 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:34:14,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:34:14,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:34:14,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:34:14,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:34:14,805 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_a3b5198c-a377-481d-a19a-5490a2c5a1e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2076015a5908970d35728e852c46f824d2f96c99 [2020-11-28 07:34:15,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:34:15,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:34:15,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:34:15,086 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:34:15,087 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:34:15,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label14.c [2020-11-28 07:34:15,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/data/73482ba82/76cb85d100d145d889fab083aa084052/FLAG4141e4589 [2020-11-28 07:34:15,865 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:34:15,866 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/sv-benchmarks/c/eca-rers2012/Problem02_label14.c [2020-11-28 07:34:15,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/data/73482ba82/76cb85d100d145d889fab083aa084052/FLAG4141e4589 [2020-11-28 07:34:16,092 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/data/73482ba82/76cb85d100d145d889fab083aa084052 [2020-11-28 07:34:16,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:34:16,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:34:16,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:34:16,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:34:16,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:34:16,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:16" (1/1) ... [2020-11-28 07:34:16,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793bb4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16, skipping insertion in model container [2020-11-28 07:34:16,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:16" (1/1) ... [2020-11-28 07:34:16,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:34:16,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:34:16,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:34:16,747 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:34:16,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:34:16,933 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:34:16,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16 WrapperNode [2020-11-28 07:34:16,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:34:16,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:34:16,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:34:16,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:34:16,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16" (1/1) ... [2020-11-28 07:34:16,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16" (1/1) ... [2020-11-28 07:34:17,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:34:17,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:34:17,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:34:17,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:34:17,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16" (1/1) ... [2020-11-28 07:34:17,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16" (1/1) ... [2020-11-28 07:34:17,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16" (1/1) ... [2020-11-28 07:34:17,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16" (1/1) ... [2020-11-28 07:34:17,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16" (1/1) ... [2020-11-28 07:34:17,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16" (1/1) ... [2020-11-28 07:34:17,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16" (1/1) ... [2020-11-28 07:34:17,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:34:17,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:34:17,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:34:17,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:34:17,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:34:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:34:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:34:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:34:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:34:20,445 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:34:20,445 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:34:20,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:20 BoogieIcfgContainer [2020-11-28 07:34:20,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:34:20,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:34:20,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:34:20,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:34:20,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:34:16" (1/3) ... [2020-11-28 07:34:20,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339d95f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:34:20, skipping insertion in model container [2020-11-28 07:34:20,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:16" (2/3) ... [2020-11-28 07:34:20,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339d95f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:34:20, skipping insertion in model container [2020-11-28 07:34:20,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:20" (3/3) ... [2020-11-28 07:34:20,457 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label14.c [2020-11-28 07:34:20,468 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:34:20,474 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:34:20,487 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:34:20,514 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:34:20,515 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:34:20,515 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:34:20,515 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:34:20,515 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:34:20,516 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:34:20,516 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:34:20,516 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:34:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:34:20,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:34:20,541 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:20,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:20,543 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:20,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:20,550 INFO L82 PathProgramCache]: Analyzing trace with hash 354709297, now seen corresponding path program 1 times [2020-11-28 07:34:20,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:20,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401390771] [2020-11-28 07:34:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:20,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401390771] [2020-11-28 07:34:20,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:20,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:34:20,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648849194] [2020-11-28 07:34:20,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:20,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:20,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:20,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:20,978 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:34:21,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:21,731 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:34:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:21,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:34:21,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:21,744 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:34:21,744 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:34:21,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:21,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:34:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:34:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:34:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 288 transitions. [2020-11-28 07:34:21,830 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 288 transitions. Word has length 80 [2020-11-28 07:34:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:21,832 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 288 transitions. [2020-11-28 07:34:21,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 288 transitions. [2020-11-28 07:34:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-28 07:34:21,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:21,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:21,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:34:21,840 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:21,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1873943090, now seen corresponding path program 1 times [2020-11-28 07:34:21,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:21,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854131020] [2020-11-28 07:34:21,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:21,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854131020] [2020-11-28 07:34:21,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:21,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:34:21,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430626313] [2020-11-28 07:34:22,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:22,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:22,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:22,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:22,007 INFO L87 Difference]: Start difference. First operand 163 states and 288 transitions. Second operand 3 states. [2020-11-28 07:34:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:22,667 INFO L93 Difference]: Finished difference Result 485 states and 861 transitions. [2020-11-28 07:34:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:22,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-28 07:34:22,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:22,672 INFO L225 Difference]: With dead ends: 485 [2020-11-28 07:34:22,672 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 07:34:22,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:22,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 07:34:22,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-28 07:34:22,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-28 07:34:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 473 transitions. [2020-11-28 07:34:22,700 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 473 transitions. Word has length 98 [2020-11-28 07:34:22,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:22,701 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 473 transitions. [2020-11-28 07:34:22,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:22,701 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 473 transitions. [2020-11-28 07:34:22,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-28 07:34:22,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:22,706 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:22,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:34:22,706 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:22,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2084322964, now seen corresponding path program 1 times [2020-11-28 07:34:22,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:22,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447093589] [2020-11-28 07:34:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:22,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447093589] [2020-11-28 07:34:22,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:22,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:34:22,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457235622] [2020-11-28 07:34:22,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:22,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:22,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:22,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:22,897 INFO L87 Difference]: Start difference. First operand 323 states and 473 transitions. Second operand 3 states. [2020-11-28 07:34:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:23,239 INFO L93 Difference]: Finished difference Result 645 states and 945 transitions. [2020-11-28 07:34:23,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:23,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-11-28 07:34:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:23,243 INFO L225 Difference]: With dead ends: 645 [2020-11-28 07:34:23,243 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 07:34:23,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:23,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 07:34:23,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-28 07:34:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-28 07:34:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 433 transitions. [2020-11-28 07:34:23,287 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 433 transitions. Word has length 99 [2020-11-28 07:34:23,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:23,290 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 433 transitions. [2020-11-28 07:34:23,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:23,290 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 433 transitions. [2020-11-28 07:34:23,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-28 07:34:23,300 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:23,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:23,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:34:23,301 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:23,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:23,301 INFO L82 PathProgramCache]: Analyzing trace with hash 242426055, now seen corresponding path program 1 times [2020-11-28 07:34:23,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:23,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006261141] [2020-11-28 07:34:23,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:23,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006261141] [2020-11-28 07:34:23,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:23,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:34:23,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691191865] [2020-11-28 07:34:23,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:23,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:23,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:23,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:23,392 INFO L87 Difference]: Start difference. First operand 323 states and 433 transitions. Second operand 3 states. [2020-11-28 07:34:23,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:23,944 INFO L93 Difference]: Finished difference Result 725 states and 980 transitions. [2020-11-28 07:34:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:23,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-28 07:34:23,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:23,947 INFO L225 Difference]: With dead ends: 725 [2020-11-28 07:34:23,947 INFO L226 Difference]: Without dead ends: 403 [2020-11-28 07:34:23,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:23,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-11-28 07:34:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-11-28 07:34:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-28 07:34:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 528 transitions. [2020-11-28 07:34:23,983 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 528 transitions. Word has length 103 [2020-11-28 07:34:23,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:23,983 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 528 transitions. [2020-11-28 07:34:23,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:23,984 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 528 transitions. [2020-11-28 07:34:23,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-28 07:34:23,986 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:23,986 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:23,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:34:23,987 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:23,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:23,987 INFO L82 PathProgramCache]: Analyzing trace with hash 204450321, now seen corresponding path program 1 times [2020-11-28 07:34:23,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:23,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102789251] [2020-11-28 07:34:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:24,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102789251] [2020-11-28 07:34:24,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834714142] [2020-11-28 07:34:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:34:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:24,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:34:24,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:34:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:34:24,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:34:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:34:24,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:34:24,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:34:24,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990418324] [2020-11-28 07:34:24,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:24,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:24,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:24,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:34:24,711 INFO L87 Difference]: Start difference. First operand 403 states and 528 transitions. Second operand 3 states. [2020-11-28 07:34:25,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:25,308 INFO L93 Difference]: Finished difference Result 965 states and 1291 transitions. [2020-11-28 07:34:25,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:25,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-28 07:34:25,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:25,313 INFO L225 Difference]: With dead ends: 965 [2020-11-28 07:34:25,314 INFO L226 Difference]: Without dead ends: 483 [2020-11-28 07:34:25,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:34:25,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-11-28 07:34:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-11-28 07:34:25,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-28 07:34:25,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 561 transitions. [2020-11-28 07:34:25,367 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 561 transitions. Word has length 107 [2020-11-28 07:34:25,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:25,369 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 561 transitions. [2020-11-28 07:34:25,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 561 transitions. [2020-11-28 07:34:25,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-11-28 07:34:25,374 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:25,374 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:25,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:34:25,600 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:25,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:25,601 INFO L82 PathProgramCache]: Analyzing trace with hash 693990905, now seen corresponding path program 1 times [2020-11-28 07:34:25,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:25,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045905441] [2020-11-28 07:34:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 07:34:25,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045905441] [2020-11-28 07:34:25,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:25,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:34:25,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814696222] [2020-11-28 07:34:25,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:34:25,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:25,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:34:25,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:34:25,766 INFO L87 Difference]: Start difference. First operand 483 states and 561 transitions. Second operand 5 states. [2020-11-28 07:34:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:26,605 INFO L93 Difference]: Finished difference Result 1066 states and 1226 transitions. [2020-11-28 07:34:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:34:26,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-11-28 07:34:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:26,610 INFO L225 Difference]: With dead ends: 1066 [2020-11-28 07:34:26,610 INFO L226 Difference]: Without dead ends: 584 [2020-11-28 07:34:26,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:34:26,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-11-28 07:34:26,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 483. [2020-11-28 07:34:26,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-28 07:34:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 557 transitions. [2020-11-28 07:34:26,626 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 557 transitions. Word has length 128 [2020-11-28 07:34:26,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:26,627 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 557 transitions. [2020-11-28 07:34:26,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:34:26,627 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 557 transitions. [2020-11-28 07:34:26,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-11-28 07:34:26,629 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:26,629 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:26,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:34:26,630 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:26,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:26,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1149976418, now seen corresponding path program 1 times [2020-11-28 07:34:26,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:26,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231116609] [2020-11-28 07:34:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-28 07:34:26,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231116609] [2020-11-28 07:34:26,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:26,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:34:26,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104144184] [2020-11-28 07:34:26,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:26,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:26,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:26,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:26,735 INFO L87 Difference]: Start difference. First operand 483 states and 557 transitions. Second operand 3 states. [2020-11-28 07:34:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:27,223 INFO L93 Difference]: Finished difference Result 1365 states and 1585 transitions. [2020-11-28 07:34:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:27,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2020-11-28 07:34:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:27,227 INFO L225 Difference]: With dead ends: 1365 [2020-11-28 07:34:27,227 INFO L226 Difference]: Without dead ends: 483 [2020-11-28 07:34:27,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:27,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-11-28 07:34:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-11-28 07:34:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-28 07:34:27,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 534 transitions. [2020-11-28 07:34:27,250 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 534 transitions. Word has length 170 [2020-11-28 07:34:27,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:27,250 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 534 transitions. [2020-11-28 07:34:27,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:27,251 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 534 transitions. [2020-11-28 07:34:27,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-11-28 07:34:27,254 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:27,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:27,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:34:27,255 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:27,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:27,256 INFO L82 PathProgramCache]: Analyzing trace with hash 608373154, now seen corresponding path program 1 times [2020-11-28 07:34:27,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:27,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60332639] [2020-11-28 07:34:27,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:27,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60332639] [2020-11-28 07:34:27,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007323218] [2020-11-28 07:34:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:34:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:27,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:34:27,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:34:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-28 07:34:27,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:34:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-28 07:34:27,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:34:27,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:34:27,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160250969] [2020-11-28 07:34:27,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:27,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:27,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:27,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:34:27,969 INFO L87 Difference]: Start difference. First operand 483 states and 534 transitions. Second operand 3 states. [2020-11-28 07:34:28,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:28,386 INFO L93 Difference]: Finished difference Result 1205 states and 1328 transitions. [2020-11-28 07:34:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:28,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2020-11-28 07:34:28,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:28,391 INFO L225 Difference]: With dead ends: 1205 [2020-11-28 07:34:28,391 INFO L226 Difference]: Without dead ends: 563 [2020-11-28 07:34:28,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:34:28,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-28 07:34:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-11-28 07:34:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-11-28 07:34:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 612 transitions. [2020-11-28 07:34:28,416 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 612 transitions. Word has length 178 [2020-11-28 07:34:28,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:28,416 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 612 transitions. [2020-11-28 07:34:28,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:28,417 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 612 transitions. [2020-11-28 07:34:28,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-28 07:34:28,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:28,421 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:28,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:34:28,642 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:28,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1364872793, now seen corresponding path program 1 times [2020-11-28 07:34:28,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:28,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525179216] [2020-11-28 07:34:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-11-28 07:34:28,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525179216] [2020-11-28 07:34:28,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:28,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:34:28,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068434953] [2020-11-28 07:34:28,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:28,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:28,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:28,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:28,749 INFO L87 Difference]: Start difference. First operand 563 states and 612 transitions. Second operand 3 states. [2020-11-28 07:34:29,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:29,188 INFO L93 Difference]: Finished difference Result 1205 states and 1325 transitions. [2020-11-28 07:34:29,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:29,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2020-11-28 07:34:29,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:29,192 INFO L225 Difference]: With dead ends: 1205 [2020-11-28 07:34:29,193 INFO L226 Difference]: Without dead ends: 643 [2020-11-28 07:34:29,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:29,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-28 07:34:29,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-11-28 07:34:29,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:34:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 693 transitions. [2020-11-28 07:34:29,213 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 693 transitions. Word has length 205 [2020-11-28 07:34:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:29,215 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 693 transitions. [2020-11-28 07:34:29,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:29,216 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 693 transitions. [2020-11-28 07:34:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-11-28 07:34:29,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:29,220 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-11-28 07:34:29,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:34:29,220 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:29,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:29,221 INFO L82 PathProgramCache]: Analyzing trace with hash -545514965, now seen corresponding path program 1 times [2020-11-28 07:34:29,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:29,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042003162] [2020-11-28 07:34:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-11-28 07:34:29,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042003162] [2020-11-28 07:34:29,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:29,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:34:29,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320153907] [2020-11-28 07:34:29,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:29,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:29,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:29,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:29,411 INFO L87 Difference]: Start difference. First operand 643 states and 693 transitions. Second operand 3 states. [2020-11-28 07:34:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:29,740 INFO L93 Difference]: Finished difference Result 643 states and 693 transitions. [2020-11-28 07:34:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:29,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-11-28 07:34:29,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:29,741 INFO L225 Difference]: With dead ends: 643 [2020-11-28 07:34:29,741 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:34:29,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:29,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:34:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:34:29,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:34:29,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:34:29,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 215 [2020-11-28 07:34:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:29,743 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:34:29,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:29,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:34:29,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:34:29,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:34:29,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:34:29,968 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-11-28 07:34:30,127 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-11-28 07:34:30,130 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:34:30,130 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:34:30,130 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:34:30,130 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:34:30,130 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:34:30,130 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:34:30,130 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:34:30,130 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:34:30,130 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:34:30,131 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:34:30,132 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:34:30,132 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:34:30,132 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:34:30,132 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:34:30,132 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:34:30,132 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:34:30,132 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:34:30,132 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:34:30,133 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:34:30,133 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:34:30,133 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:34:30,133 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:34:30,133 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:34:30,134 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:34:30,134 INFO L274 CegarLoopResult]: For program point L529-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:34:30,134 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:34:30,134 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:34:30,134 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:34:30,134 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:34:30,134 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:34:30,134 INFO L274 CegarLoopResult]: For program point L532-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:34:30,134 INFO L274 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-11-28 07:34:30,134 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:34:30,135 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:34:30,135 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:34:30,135 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:34:30,135 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:34:30,135 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:34:30,135 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:34:30,135 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:34:30,135 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:34:30,135 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:34:30,136 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:34:30,136 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 8)) (.cse2 (<= ~a28~0 10)) (.cse3 (= ~a19~0 1)) (.cse4 (= ~a21~0 1)) (.cse5 (= ~a17~0 8)) (.cse0 (= ~a25~0 1)) (.cse6 (not (= ~a11~0 1)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse2) (and .cse6 .cse1 .cse2) (and (<= ~a28~0 7) .cse1) (and (<= 10 ~a28~0) .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse0 .cse6 (= ~a28~0 11)))) [2020-11-28 07:34:30,136 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:34:30,136 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:34:30,136 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:34:30,136 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:34:30,137 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:34:30,137 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:34:30,137 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:34:30,137 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:34:30,137 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:34:30,137 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:34:30,137 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:34:30,137 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 8)) (.cse2 (<= ~a28~0 10)) (.cse3 (= ~a19~0 1)) (.cse4 (= ~a21~0 1)) (.cse5 (= ~a17~0 8)) (.cse0 (= ~a25~0 1)) (.cse6 (not (= ~a11~0 1)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse2) (and .cse6 .cse1 .cse2) (and (<= ~a28~0 7) .cse1) (and (<= 10 ~a28~0) .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse0 .cse6 (= ~a28~0 11)))) [2020-11-28 07:34:30,137 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:34:30,138 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:34:30,138 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:34:30,138 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:34:30,138 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:34:30,138 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:34:30,138 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:34:30,138 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:34:30,138 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:34:30,138 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:34:30,138 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:34:30,138 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:34:30,139 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:34:30,139 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:34:30,139 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:34:30,139 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:34:30,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:34:30 BoogieIcfgContainer [2020-11-28 07:34:30,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:34:30,159 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:34:30,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:34:30,159 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:34:30,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:20" (3/4) ... [2020-11-28 07:34:30,163 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:34:30,186 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-28 07:34:30,188 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-28 07:34:30,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:34:30,192 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:34:30,323 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a3b5198c-a377-481d-a19a-5490a2c5a1e2/bin/utaipan/witness.graphml [2020-11-28 07:34:30,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:34:30,325 INFO L168 Benchmark]: Toolchain (without parser) took 14227.17 ms. Allocated memory was 81.8 MB in the beginning and 337.6 MB in the end (delta: 255.9 MB). Free memory was 45.7 MB in the beginning and 236.8 MB in the end (delta: -191.0 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:30,325 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 81.8 MB. Free memory is still 64.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:34:30,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 838.05 ms. Allocated memory is still 81.8 MB. Free memory was 45.5 MB in the beginning and 43.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:30,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.76 ms. Allocated memory is still 81.8 MB. Free memory was 43.8 MB in the beginning and 38.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:30,326 INFO L168 Benchmark]: Boogie Preprocessor took 89.77 ms. Allocated memory is still 81.8 MB. Free memory was 38.4 MB in the beginning and 33.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:30,326 INFO L168 Benchmark]: RCFGBuilder took 3295.35 ms. Allocated memory was 81.8 MB in the beginning and 163.6 MB in the end (delta: 81.8 MB). Free memory was 33.9 MB in the beginning and 104.7 MB in the end (delta: -70.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:30,327 INFO L168 Benchmark]: TraceAbstraction took 9708.48 ms. Allocated memory was 163.6 MB in the beginning and 337.6 MB in the end (delta: 174.1 MB). Free memory was 103.6 MB in the beginning and 252.5 MB in the end (delta: -148.9 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:30,327 INFO L168 Benchmark]: Witness Printer took 165.05 ms. Allocated memory is still 337.6 MB. Free memory was 252.5 MB in the beginning and 236.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:30,330 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 81.8 MB. Free memory is still 64.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 838.05 ms. Allocated memory is still 81.8 MB. Free memory was 45.5 MB in the beginning and 43.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 122.76 ms. Allocated memory is still 81.8 MB. Free memory was 43.8 MB in the beginning and 38.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.77 ms. Allocated memory is still 81.8 MB. Free memory was 38.4 MB in the beginning and 33.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3295.35 ms. Allocated memory was 81.8 MB in the beginning and 163.6 MB in the end (delta: 81.8 MB). Free memory was 33.9 MB in the beginning and 104.7 MB in the end (delta: -70.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9708.48 ms. Allocated memory was 163.6 MB in the beginning and 337.6 MB in the end (delta: 174.1 MB). Free memory was 103.6 MB in the beginning and 252.5 MB in the end (delta: -148.9 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. * Witness Printer took 165.05 ms. Allocated memory is still 337.6 MB. Free memory was 252.5 MB in the beginning and 236.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((a25 == 1 && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a21 == 1) && a17 == 8) && a28 <= 10)) || ((!(a11 == 1) && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || (((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 11) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((a25 == 1 && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a21 == 1) && a17 == 8) && a28 <= 10)) || ((!(a11 == 1) && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || (((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 11) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.2s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 643 SDslu, 60 SDs, 0 SdLazy, 2192 SolverSat, 472 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 598 GetRequests, 577 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=643occurred in iteration=9, 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, 10 MinimizatonAttempts, 101 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 39 NumberOfFragments, 145 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1182 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 88 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1668 NumberOfCodeBlocks, 1668 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1939 ConstructedInterpolants, 0 QuantifiedInterpolants, 1090511 SizeOfPredicates, 1 NumberOfNonLiveVariables, 640 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 1173/1247 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...