./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label35.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_2a3956e1-c4fc-44c4-8408-fa166525b828/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label35.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/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 5dbdfde82e5730ef5d0f07f5ee242be74461fae6 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:47,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:47,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:47,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:47,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:47,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:47,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:47,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:47,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:47,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:47,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:47,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:47,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:47,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:47,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:47,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:47,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:47,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:47,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:47,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:47,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:47,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:47,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:47,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:47,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:47,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:47,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:47,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:47,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:47,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:47,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:47,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:47,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:47,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:47,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:47,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:47,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:47,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:47,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:47,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:47,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:47,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:47,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:47,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:47,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:47,804 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:47,804 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:47,804 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:47,805 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:47,805 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:47,805 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:47,805 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:47,806 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:47,807 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:47,807 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:47,807 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:47,807 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:47,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:47,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:47,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:47,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:47,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:47,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:47,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:47,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:47,810 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:47,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:47,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:47,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:47,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:47,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:47,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:47,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:47,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:47,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:47,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:47,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:47,813 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:47,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:47,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:47,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:47,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:47,814 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_2a3956e1-c4fc-44c4-8408-fa166525b828/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dbdfde82e5730ef5d0f07f5ee242be74461fae6 [2020-11-22 13:05:48,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:48,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:48,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:48,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:48,105 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:48,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label35.c [2020-11-22 13:05:48,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/bin/utaipan/data/78354a9c7/bd8b6b58ab7f4b83b1628140587d7f56/FLAG345ed308a [2020-11-22 13:05:48,776 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:48,777 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/sv-benchmarks/c/eca-rers2012/Problem02_label35.c [2020-11-22 13:05:48,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/bin/utaipan/data/78354a9c7/bd8b6b58ab7f4b83b1628140587d7f56/FLAG345ed308a [2020-11-22 13:05:49,052 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/bin/utaipan/data/78354a9c7/bd8b6b58ab7f4b83b1628140587d7f56 [2020-11-22 13:05:49,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:49,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:49,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:49,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:49,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:49,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:49" (1/1) ... [2020-11-22 13:05:49,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0cd5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49, skipping insertion in model container [2020-11-22 13:05:49,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:49" (1/1) ... [2020-11-22 13:05:49,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:49,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:49,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:49,554 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:49,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:49,678 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:49,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49 WrapperNode [2020-11-22 13:05:49,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:49,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:49,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:49,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:49,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49" (1/1) ... [2020-11-22 13:05:49,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49" (1/1) ... [2020-11-22 13:05:49,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:49,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:49,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:49,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:49,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49" (1/1) ... [2020-11-22 13:05:49,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49" (1/1) ... [2020-11-22 13:05:49,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49" (1/1) ... [2020-11-22 13:05:49,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49" (1/1) ... [2020-11-22 13:05:49,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49" (1/1) ... [2020-11-22 13:05:49,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49" (1/1) ... [2020-11-22 13:05:49,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49" (1/1) ... [2020-11-22 13:05:49,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:49,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:49,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:49,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:49,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/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 [2020-11-22 13:05:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:49,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:52,438 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:52,439 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:05:52,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:52 BoogieIcfgContainer [2020-11-22 13:05:52,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:52,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:52,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:52,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:52,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:49" (1/3) ... [2020-11-22 13:05:52,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8d32af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:52, skipping insertion in model container [2020-11-22 13:05:52,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:49" (2/3) ... [2020-11-22 13:05:52,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8d32af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:52, skipping insertion in model container [2020-11-22 13:05:52,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:52" (3/3) ... [2020-11-22 13:05:52,452 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label35.c [2020-11-22 13:05:52,467 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:52,472 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:52,485 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:52,511 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:52,511 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:52,511 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:52,511 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:52,511 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:52,512 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:52,512 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:52,512 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-22 13:05:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-22 13:05:52,538 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:52,539 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] [2020-11-22 13:05:52,540 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:52,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:52,546 INFO L82 PathProgramCache]: Analyzing trace with hash -216556473, now seen corresponding path program 1 times [2020-11-22 13:05:52,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:52,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223145520] [2020-11-22 13:05:52,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:53,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223145520] [2020-11-22 13:05:53,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:53,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:53,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908171039] [2020-11-22 13:05:53,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:53,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:53,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:53,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:53,077 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-22 13:05:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:53,802 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-22 13:05:53,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:53,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-22 13:05:53,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:53,824 INFO L225 Difference]: With dead ends: 251 [2020-11-22 13:05:53,824 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 13:05:53,828 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 [2020-11-22 13:05:53,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 13:05:53,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 13:05:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 13:05:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 288 transitions. [2020-11-22 13:05:53,902 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 288 transitions. Word has length 80 [2020-11-22 13:05:53,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:53,903 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 288 transitions. [2020-11-22 13:05:53,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:53,904 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 288 transitions. [2020-11-22 13:05:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-22 13:05:53,909 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:53,909 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] [2020-11-22 13:05:53,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:53,910 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:53,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1467808036, now seen corresponding path program 1 times [2020-11-22 13:05:53,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:53,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427916524] [2020-11-22 13:05:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:54,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427916524] [2020-11-22 13:05:54,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:54,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:54,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020404093] [2020-11-22 13:05:54,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:54,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:54,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:54,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:54,043 INFO L87 Difference]: Start difference. First operand 163 states and 288 transitions. Second operand 3 states. [2020-11-22 13:05:54,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:54,603 INFO L93 Difference]: Finished difference Result 485 states and 861 transitions. [2020-11-22 13:05:54,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:54,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-22 13:05:54,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:54,613 INFO L225 Difference]: With dead ends: 485 [2020-11-22 13:05:54,615 INFO L226 Difference]: Without dead ends: 323 [2020-11-22 13:05:54,617 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 [2020-11-22 13:05:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-22 13:05:54,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-22 13:05:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-22 13:05:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 548 transitions. [2020-11-22 13:05:54,655 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 548 transitions. Word has length 98 [2020-11-22 13:05:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:54,656 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 548 transitions. [2020-11-22 13:05:54,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 548 transitions. [2020-11-22 13:05:54,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-11-22 13:05:54,674 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:54,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:54,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:54,675 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:54,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:54,676 INFO L82 PathProgramCache]: Analyzing trace with hash 2035883750, now seen corresponding path program 1 times [2020-11-22 13:05:54,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:54,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406518690] [2020-11-22 13:05:54,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-22 13:05:54,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406518690] [2020-11-22 13:05:54,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:54,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:54,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476710757] [2020-11-22 13:05:54,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:54,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:54,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:54,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:54,789 INFO L87 Difference]: Start difference. First operand 323 states and 548 transitions. Second operand 3 states. [2020-11-22 13:05:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:55,302 INFO L93 Difference]: Finished difference Result 805 states and 1345 transitions. [2020-11-22 13:05:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:55,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-11-22 13:05:55,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:55,306 INFO L225 Difference]: With dead ends: 805 [2020-11-22 13:05:55,307 INFO L226 Difference]: Without dead ends: 483 [2020-11-22 13:05:55,309 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 [2020-11-22 13:05:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-11-22 13:05:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-11-22 13:05:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-22 13:05:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 728 transitions. [2020-11-22 13:05:55,336 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 728 transitions. Word has length 108 [2020-11-22 13:05:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:55,337 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 728 transitions. [2020-11-22 13:05:55,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 728 transitions. [2020-11-22 13:05:55,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-22 13:05:55,339 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:55,340 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:55,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:05:55,340 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:55,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:55,341 INFO L82 PathProgramCache]: Analyzing trace with hash -562636991, now seen corresponding path program 1 times [2020-11-22 13:05:55,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:55,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476436522] [2020-11-22 13:05:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-22 13:05:55,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476436522] [2020-11-22 13:05:55,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098596801] [2020-11-22 13:05:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/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 [2020-11-22 13:05:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:55,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:05:55,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-22 13:05:55,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-22 13:05:55,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:05:55,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-22 13:05:55,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985362727] [2020-11-22 13:05:55,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:55,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:55,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:55,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:55,829 INFO L87 Difference]: Start difference. First operand 483 states and 728 transitions. Second operand 3 states. [2020-11-22 13:05:56,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:56,527 INFO L93 Difference]: Finished difference Result 885 states and 1365 transitions. [2020-11-22 13:05:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:56,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-11-22 13:05:56,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:56,534 INFO L225 Difference]: With dead ends: 885 [2020-11-22 13:05:56,534 INFO L226 Difference]: Without dead ends: 883 [2020-11-22 13:05:56,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:56,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-11-22 13:05:56,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 563. [2020-11-22 13:05:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-11-22 13:05:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 883 transitions. [2020-11-22 13:05:56,587 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 883 transitions. Word has length 113 [2020-11-22 13:05:56,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:56,590 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 883 transitions. [2020-11-22 13:05:56,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:56,590 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 883 transitions. [2020-11-22 13:05:56,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-22 13:05:56,594 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:56,594 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:56,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:56,821 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:56,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:56,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1421591101, now seen corresponding path program 1 times [2020-11-22 13:05:56,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:56,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057301543] [2020-11-22 13:05:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-22 13:05:56,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057301543] [2020-11-22 13:05:56,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:56,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:56,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267106450] [2020-11-22 13:05:56,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:56,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:56,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:56,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:56,915 INFO L87 Difference]: Start difference. First operand 563 states and 883 transitions. Second operand 3 states. [2020-11-22 13:05:57,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:57,246 INFO L93 Difference]: Finished difference Result 1125 states and 1765 transitions. [2020-11-22 13:05:57,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:57,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-11-22 13:05:57,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:57,250 INFO L225 Difference]: With dead ends: 1125 [2020-11-22 13:05:57,250 INFO L226 Difference]: Without dead ends: 563 [2020-11-22 13:05:57,252 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 [2020-11-22 13:05:57,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-22 13:05:57,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-11-22 13:05:57,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-11-22 13:05:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2020-11-22 13:05:57,274 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 125 [2020-11-22 13:05:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:57,274 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2020-11-22 13:05:57,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:57,275 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2020-11-22 13:05:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-22 13:05:57,278 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:57,278 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:57,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:05:57,279 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:57,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:57,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1831488995, now seen corresponding path program 1 times [2020-11-22 13:05:57,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:57,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449784614] [2020-11-22 13:05:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-22 13:05:57,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449784614] [2020-11-22 13:05:57,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939283676] [2020-11-22 13:05:57,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/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 [2020-11-22 13:05:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:57,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:05:57,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-22 13:05:57,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-22 13:05:57,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:05:57,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-11-22 13:05:57,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097520154] [2020-11-22 13:05:57,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:57,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:57,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:57,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:05:57,613 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 4 states. [2020-11-22 13:05:58,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:58,380 INFO L93 Difference]: Finished difference Result 1443 states and 2109 transitions. [2020-11-22 13:05:58,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:58,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-11-22 13:05:58,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:58,381 INFO L225 Difference]: With dead ends: 1443 [2020-11-22 13:05:58,381 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:58,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:05:58,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:58,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:58,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 133 [2020-11-22 13:05:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:58,384 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:58,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:58,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:58,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:58,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:58,707 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-22 13:05:58,707 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-22 13:05:58,707 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-22 13:05:58,707 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-22 13:05:58,707 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-22 13:05:58,707 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-22 13:05:58,707 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-22 13:05:58,708 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-22 13:05:58,708 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-22 13:05:58,708 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-22 13:05:58,708 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-22 13:05:58,708 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-22 13:05:58,708 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-22 13:05:58,708 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-22 13:05:58,708 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-22 13:05:58,708 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-22 13:05:58,709 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-22 13:05:58,709 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-22 13:05:58,709 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-22 13:05:58,709 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-22 13:05:58,709 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-22 13:05:58,709 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-22 13:05:58,709 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-22 13:05:58,709 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-22 13:05:58,709 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-22 13:05:58,709 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-22 13:05:58,710 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:58,710 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-22 13:05:58,710 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-22 13:05:58,710 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-22 13:05:58,710 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-22 13:05:58,710 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-22 13:05:58,710 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-22 13:05:58,710 INFO L274 CegarLoopResult]: For program point L460-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 13:05:58,710 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-22 13:05:58,711 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-22 13:05:58,711 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-22 13:05:58,711 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:05:58,711 INFO L274 CegarLoopResult]: For program point L463-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 13:05:58,711 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-22 13:05:58,711 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-22 13:05:58,711 INFO L274 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-11-22 13:05:58,711 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-22 13:05:58,712 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-22 13:05:58,712 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-22 13:05:58,712 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-22 13:05:58,712 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-22 13:05:58,712 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-22 13:05:58,717 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-22 13:05:58,718 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-22 13:05:58,718 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-22 13:05:58,718 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-22 13:05:58,718 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-22 13:05:58,719 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-22 13:05:58,719 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-22 13:05:58,719 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-22 13:05:58,719 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (< ~a28~0 11)) (.cse0 (<= ~a17~0 8))) (or (and (<= ~a28~0 9) .cse0) (and (<= 8 ~a17~0) .cse1 .cse0) (and (= ~a19~0 1) .cse0) (and (= ~a25~0 0) .cse1 .cse0))) [2020-11-22 13:05:58,720 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-22 13:05:58,720 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-22 13:05:58,720 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-22 13:05:58,720 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-22 13:05:58,720 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-22 13:05:58,721 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-22 13:05:58,721 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-22 13:05:58,721 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-22 13:05:58,721 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:58,721 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-22 13:05:58,721 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-22 13:05:58,723 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (< ~a28~0 11)) (.cse0 (<= ~a17~0 8))) (or (and (<= ~a28~0 9) .cse0) (and (<= 8 ~a17~0) .cse1 .cse0) (and (= ~a19~0 1) .cse0) (and (= ~a25~0 0) .cse1 .cse0))) [2020-11-22 13:05:58,723 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-22 13:05:58,724 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-22 13:05:58,724 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-22 13:05:58,724 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-22 13:05:58,724 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-22 13:05:58,724 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-22 13:05:58,724 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-22 13:05:58,725 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-22 13:05:58,725 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-22 13:05:58,725 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-22 13:05:58,725 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-22 13:05:58,725 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-22 13:05:58,725 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-22 13:05:58,726 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-22 13:05:58,726 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-22 13:05:58,726 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-22 13:05:58,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:58 BoogieIcfgContainer [2020-11-22 13:05:58,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:58,754 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:58,754 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:58,754 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:58,755 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:52" (3/4) ... [2020-11-22 13:05:58,758 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:58,788 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-22 13:05:58,790 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-22 13:05:58,792 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-22 13:05:58,794 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:05:59,011 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2a3956e1-c4fc-44c4-8408-fa166525b828/bin/utaipan/witness.graphml [2020-11-22 13:05:59,012 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:59,014 INFO L168 Benchmark]: Toolchain (without parser) took 9957.41 ms. Allocated memory was 107.0 MB in the beginning and 205.5 MB in the end (delta: 98.6 MB). Free memory was 79.9 MB in the beginning and 161.7 MB in the end (delta: -81.8 MB). Peak memory consumption was 122.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:59,015 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory is still 64.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:59,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.73 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 68.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:59,017 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.75 ms. Allocated memory is still 107.0 MB. Free memory was 68.8 MB in the beginning and 63.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:59,017 INFO L168 Benchmark]: Boogie Preprocessor took 98.35 ms. Allocated memory is still 107.0 MB. Free memory was 63.2 MB in the beginning and 59.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:59,018 INFO L168 Benchmark]: RCFGBuilder took 2563.14 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 58.7 MB in the beginning and 58.6 MB in the end (delta: 72.0 kB). Peak memory consumption was 44.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:59,018 INFO L168 Benchmark]: TraceAbstraction took 6308.01 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 57.6 MB in the beginning and 60.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 61.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:59,019 INFO L168 Benchmark]: Witness Printer took 258.47 ms. Allocated memory is still 205.5 MB. Free memory was 60.9 MB in the beginning and 161.7 MB in the end (delta: -100.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:59,021 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory is still 64.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 622.73 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 68.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.75 ms. Allocated memory is still 107.0 MB. Free memory was 68.8 MB in the beginning and 63.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.35 ms. Allocated memory is still 107.0 MB. Free memory was 63.2 MB in the beginning and 59.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2563.14 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 58.7 MB in the beginning and 58.6 MB in the end (delta: 72.0 kB). Peak memory consumption was 44.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6308.01 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 57.6 MB in the beginning and 60.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 61.7 MB. Max. memory is 16.1 GB. * Witness Printer took 258.47 ms. Allocated memory is still 205.5 MB. Free memory was 60.9 MB in the beginning and 161.7 MB in the end (delta: -100.8 MB). Peak memory consumption was 5.1 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: (((a28 <= 9 && a17 <= 8) || ((8 <= a17 && a28 < 11) && a17 <= 8)) || (a19 == 1 && a17 <= 8)) || ((a25 == 0 && a28 < 11) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((a28 <= 9 && a17 <= 8) || ((8 <= a17 && a28 < 11) && a17 <= 8)) || (a19 == 1 && a17 <= 8)) || ((a25 == 0 && a28 < 11) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 173 SDtfs, 504 SDslu, 34 SDs, 0 SdLazy, 1425 SolverSat, 372 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 502 GetRequests, 490 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=563occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 320 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 29 NumberOfFragments, 71 HoareAnnotationTreeSize, 3 FomulaSimplifications, 366 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 903 NumberOfCodeBlocks, 903 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1139 ConstructedInterpolants, 0 QuantifiedInterpolants, 222407 SizeOfPredicates, 1 NumberOfNonLiveVariables, 631 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 499/505 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...