./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label03.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_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label03.c -s /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/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 745ebb6547cb702820db2a03880b889e610b0b9a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 07:32:15,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:32:15,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:32:15,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:32:15,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:32:15,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:32:15,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:32:15,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:32:15,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:32:15,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:32:15,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:32:15,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:32:15,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:32:15,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:32:15,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:32:15,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:32:15,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:32:15,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:32:15,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:32:15,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:32:15,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:32:15,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:32:15,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:32:15,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:32:15,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:32:15,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:32:15,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:32:15,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:32:15,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:32:15,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:32:15,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:32:15,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:32:15,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:32:15,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:32:15,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:32:15,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:32:15,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:32:15,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:32:15,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:32:15,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:32:15,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:32:15,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:32:15,803 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:32:15,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:32:15,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:32:15,805 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:32:15,805 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:32:15,806 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:32:15,806 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:32:15,806 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:32:15,806 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:32:15,806 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:32:15,808 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:32:15,808 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:32:15,808 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:32:15,808 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:32:15,809 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:32:15,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:32:15,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:32:15,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:32:15,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:32:15,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:32:15,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:32:15,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:32:15,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:32:15,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:32:15,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:32:15,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:32:15,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:32:15,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:32:15,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:32:15,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:32:15,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:32:15,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:32:15,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:32:15,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:32:15,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:32:15,816 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:32:15,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:32:15,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:32:15,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:32:15,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:32:15,817 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_82c217c2-fd3c-49bf-8812-1250d3e7c844/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 745ebb6547cb702820db2a03880b889e610b0b9a [2020-11-28 07:32:16,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:32:16,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:32:16,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:32:16,165 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:32:16,166 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:32:16,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label03.c [2020-11-28 07:32:16,251 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/data/29fdf5b9b/1248bcf874874707a9940fd046a8069d/FLAGd13e357fa [2020-11-28 07:32:16,962 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:32:16,962 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/sv-benchmarks/c/eca-rers2012/Problem02_label03.c [2020-11-28 07:32:16,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/data/29fdf5b9b/1248bcf874874707a9940fd046a8069d/FLAGd13e357fa [2020-11-28 07:32:17,219 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/data/29fdf5b9b/1248bcf874874707a9940fd046a8069d [2020-11-28 07:32:17,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:32:17,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:32:17,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:32:17,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:32:17,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:32:17,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:32:17" (1/1) ... [2020-11-28 07:32:17,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f28d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17, skipping insertion in model container [2020-11-28 07:32:17,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:32:17" (1/1) ... [2020-11-28 07:32:17,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:32:17,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:32:17,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:32:17,745 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:32:17,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:32:17,860 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:32:17,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17 WrapperNode [2020-11-28 07:32:17,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:32:17,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:32:17,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:32:17,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:32:17,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17" (1/1) ... [2020-11-28 07:32:17,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17" (1/1) ... [2020-11-28 07:32:17,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:32:17,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:32:17,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:32:17,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:32:17,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17" (1/1) ... [2020-11-28 07:32:17,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17" (1/1) ... [2020-11-28 07:32:17,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17" (1/1) ... [2020-11-28 07:32:17,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17" (1/1) ... [2020-11-28 07:32:17,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17" (1/1) ... [2020-11-28 07:32:17,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17" (1/1) ... [2020-11-28 07:32:17,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17" (1/1) ... [2020-11-28 07:32:18,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:32:18,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:32:18,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:32:18,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:32:18,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/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 07:32:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:32:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:32:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:32:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:32:20,666 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:32:20,670 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:32:20,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:32:20 BoogieIcfgContainer [2020-11-28 07:32:20,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:32:20,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:32:20,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:32:20,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:32:20,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:32:17" (1/3) ... [2020-11-28 07:32:20,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480ddca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:32:20, skipping insertion in model container [2020-11-28 07:32:20,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:17" (2/3) ... [2020-11-28 07:32:20,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480ddca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:32:20, skipping insertion in model container [2020-11-28 07:32:20,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:32:20" (3/3) ... [2020-11-28 07:32:20,685 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label03.c [2020-11-28 07:32:20,697 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:32:20,702 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:32:20,714 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:32:20,748 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:32:20,748 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:32:20,748 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:32:20,748 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:32:20,748 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:32:20,749 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:32:20,749 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:32:20,749 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:32:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:32:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:32:20,780 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:20,781 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 07:32:20,782 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:20,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:20,788 INFO L82 PathProgramCache]: Analyzing trace with hash -216538864, now seen corresponding path program 1 times [2020-11-28 07:32:20,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:20,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255631924] [2020-11-28 07:32:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:21,351 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 07:32:21,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255631924] [2020-11-28 07:32:21,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:32:21,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:32:21,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995558343] [2020-11-28 07:32:21,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:32:21,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:32:21,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:32:21,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:32:21,380 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:32:21,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:21,907 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:32:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:32:21,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:32:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:21,927 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:32:21,931 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:32:21,936 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 07:32:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:32:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:32:22,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:32:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-11-28 07:32:22,022 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-11-28 07:32:22,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:22,023 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-11-28 07:32:22,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:32:22,024 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-11-28 07:32:22,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-28 07:32:22,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:22,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:32:22,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:32:22,032 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:22,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:22,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1992949053, now seen corresponding path program 1 times [2020-11-28 07:32:22,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:22,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177016105] [2020-11-28 07:32:22,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:32:22,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177016105] [2020-11-28 07:32:22,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:32:22,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:32:22,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731200168] [2020-11-28 07:32:22,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:32:22,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:32:22,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:32:22,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:32:22,154 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-11-28 07:32:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:22,806 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-11-28 07:32:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:32:22,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-28 07:32:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:22,811 INFO L225 Difference]: With dead ends: 485 [2020-11-28 07:32:22,811 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 07:32:22,813 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 07:32:22,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 07:32:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-28 07:32:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-28 07:32:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-11-28 07:32:22,833 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-11-28 07:32:22,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:22,833 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-11-28 07:32:22,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:32:22,834 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-11-28 07:32:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-28 07:32:22,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:22,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:32:22,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:32:22,838 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:22,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:22,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1654432738, now seen corresponding path program 1 times [2020-11-28 07:32:22,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:22,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144796103] [2020-11-28 07:32:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:32:22,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144796103] [2020-11-28 07:32:22,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439588656] [2020-11-28 07:32:22,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/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 07:32:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:23,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:32:23,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:32:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:32:23,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:32:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:32:23,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:32:23,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-28 07:32:23,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142701343] [2020-11-28 07:32:23,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:32:23,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:32:23,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:32:23,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:32:23,275 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-11-28 07:32:23,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:23,845 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2020-11-28 07:32:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:32:23,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-28 07:32:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:23,850 INFO L225 Difference]: With dead ends: 565 [2020-11-28 07:32:23,851 INFO L226 Difference]: Without dead ends: 563 [2020-11-28 07:32:23,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:32:23,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-28 07:32:23,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2020-11-28 07:32:23,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-28 07:32:23,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2020-11-28 07:32:23,887 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2020-11-28 07:32:23,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:23,887 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2020-11-28 07:32:23,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:32:23,888 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2020-11-28 07:32:23,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-28 07:32:23,898 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:23,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:32:24,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 07:32:24,119 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:24,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:24,120 INFO L82 PathProgramCache]: Analyzing trace with hash -215850790, now seen corresponding path program 1 times [2020-11-28 07:32:24,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:24,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247188583] [2020-11-28 07:32:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:32:24,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247188583] [2020-11-28 07:32:24,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:32:24,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:32:24,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755186289] [2020-11-28 07:32:24,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:32:24,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:32:24,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:32:24,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:32:24,217 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2020-11-28 07:32:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:24,502 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2020-11-28 07:32:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:32:24,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-28 07:32:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:24,505 INFO L225 Difference]: With dead ends: 805 [2020-11-28 07:32:24,505 INFO L226 Difference]: Without dead ends: 403 [2020-11-28 07:32:24,507 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 07:32:24,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-11-28 07:32:24,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-11-28 07:32:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-28 07:32:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2020-11-28 07:32:24,535 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2020-11-28 07:32:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:24,535 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2020-11-28 07:32:24,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:32:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2020-11-28 07:32:24,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-28 07:32:24,544 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:24,546 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:32:24,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:32:24,547 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:24,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:24,548 INFO L82 PathProgramCache]: Analyzing trace with hash 441529628, now seen corresponding path program 1 times [2020-11-28 07:32:24,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:24,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755149933] [2020-11-28 07:32:24,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:32:24,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755149933] [2020-11-28 07:32:24,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:32:24,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:32:24,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469579060] [2020-11-28 07:32:24,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:32:24,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:32:24,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:32:24,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:32:24,627 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2020-11-28 07:32:25,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:25,136 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2020-11-28 07:32:25,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:32:25,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-28 07:32:25,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:25,140 INFO L225 Difference]: With dead ends: 885 [2020-11-28 07:32:25,140 INFO L226 Difference]: Without dead ends: 563 [2020-11-28 07:32:25,141 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 07:32:25,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-28 07:32:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-11-28 07:32:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-11-28 07:32:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2020-11-28 07:32:25,157 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2020-11-28 07:32:25,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:25,158 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2020-11-28 07:32:25,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:32:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2020-11-28 07:32:25,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-28 07:32:25,163 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:25,163 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] [2020-11-28 07:32:25,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:32:25,163 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:25,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1831506604, now seen corresponding path program 1 times [2020-11-28 07:32:25,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:25,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330749314] [2020-11-28 07:32:25,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-28 07:32:25,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330749314] [2020-11-28 07:32:25,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326956105] [2020-11-28 07:32:25,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/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 07:32:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:25,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:32:25,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:32:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-28 07:32:25,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:32:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-28 07:32:25,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:32:25,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-28 07:32:25,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069790864] [2020-11-28 07:32:25,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:32:25,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:32:25,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:32:25,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:32:25,551 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2020-11-28 07:32:26,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:26,030 INFO L93 Difference]: Finished difference Result 1285 states and 1916 transitions. [2020-11-28 07:32:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:32:26,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-28 07:32:26,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:26,035 INFO L225 Difference]: With dead ends: 1285 [2020-11-28 07:32:26,035 INFO L226 Difference]: Without dead ends: 803 [2020-11-28 07:32:26,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:32:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-28 07:32:26,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2020-11-28 07:32:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-28 07:32:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1003 transitions. [2020-11-28 07:32:26,057 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1003 transitions. Word has length 133 [2020-11-28 07:32:26,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:26,057 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1003 transitions. [2020-11-28 07:32:26,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:32:26,058 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1003 transitions. [2020-11-28 07:32:26,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-28 07:32:26,060 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:26,061 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:32:26,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:32:26,275 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:26,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:26,275 INFO L82 PathProgramCache]: Analyzing trace with hash 294633202, now seen corresponding path program 1 times [2020-11-28 07:32:26,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:26,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793624903] [2020-11-28 07:32:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-28 07:32:26,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793624903] [2020-11-28 07:32:26,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799635761] [2020-11-28 07:32:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:32:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:26,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:32:26,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:32:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-28 07:32:26,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:32:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-28 07:32:26,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:32:26,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-28 07:32:26,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589523387] [2020-11-28 07:32:26,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:32:26,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:32:26,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:32:26,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:32:26,685 INFO L87 Difference]: Start difference. First operand 723 states and 1003 transitions. Second operand 3 states. [2020-11-28 07:32:27,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:27,147 INFO L93 Difference]: Finished difference Result 1605 states and 2230 transitions. [2020-11-28 07:32:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:32:27,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-11-28 07:32:27,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:27,153 INFO L225 Difference]: With dead ends: 1605 [2020-11-28 07:32:27,153 INFO L226 Difference]: Without dead ends: 643 [2020-11-28 07:32:27,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:32:27,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-28 07:32:27,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-11-28 07:32:27,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:32:27,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 830 transitions. [2020-11-28 07:32:27,173 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 830 transitions. Word has length 181 [2020-11-28 07:32:27,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:27,173 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 830 transitions. [2020-11-28 07:32:27,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:32:27,173 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 830 transitions. [2020-11-28 07:32:27,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-28 07:32:27,176 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:27,177 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 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, 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 07:32:27,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:32:27,385 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:27,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:27,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1588826958, now seen corresponding path program 1 times [2020-11-28 07:32:27,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:27,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845442059] [2020-11-28 07:32:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-28 07:32:27,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845442059] [2020-11-28 07:32:27,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:32:27,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:32:27,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994524677] [2020-11-28 07:32:27,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:32:27,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:32:27,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:32:27,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:32:27,553 INFO L87 Difference]: Start difference. First operand 643 states and 830 transitions. Second operand 5 states. [2020-11-28 07:32:28,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:28,413 INFO L93 Difference]: Finished difference Result 1392 states and 1816 transitions. [2020-11-28 07:32:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:32:28,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-11-28 07:32:28,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:28,418 INFO L225 Difference]: With dead ends: 1392 [2020-11-28 07:32:28,418 INFO L226 Difference]: Without dead ends: 664 [2020-11-28 07:32:28,419 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 07:32:28,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-11-28 07:32:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 643. [2020-11-28 07:32:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:32:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 781 transitions. [2020-11-28 07:32:28,439 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 781 transitions. Word has length 183 [2020-11-28 07:32:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:28,439 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 781 transitions. [2020-11-28 07:32:28,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:32:28,439 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 781 transitions. [2020-11-28 07:32:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-11-28 07:32:28,442 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:28,443 INFO L422 BasicCegarLoop]: trace histogram [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, 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 07:32:28,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:32:28,443 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:28,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:28,444 INFO L82 PathProgramCache]: Analyzing trace with hash -822972392, now seen corresponding path program 1 times [2020-11-28 07:32:28,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:28,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826694792] [2020-11-28 07:32:28,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 96 proven. 8 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-28 07:32:28,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826694792] [2020-11-28 07:32:28,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990553882] [2020-11-28 07:32:28,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:32:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:28,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:32:28,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:32:28,759 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:32:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 170 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:32:28,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:32:28,828 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 5, 1] term [2020-11-28 07:32:28,828 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:32:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-28 07:32:28,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:32:28,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2020-11-28 07:32:28,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659299064] [2020-11-28 07:32:28,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:32:28,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:32:28,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:32:28,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:32:28,855 INFO L87 Difference]: Start difference. First operand 643 states and 781 transitions. Second operand 3 states. [2020-11-28 07:32:29,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:29,164 INFO L93 Difference]: Finished difference Result 1205 states and 1477 transitions. [2020-11-28 07:32:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:32:29,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-11-28 07:32:29,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:29,168 INFO L225 Difference]: With dead ends: 1205 [2020-11-28 07:32:29,168 INFO L226 Difference]: Without dead ends: 643 [2020-11-28 07:32:29,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:32:29,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-28 07:32:29,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-11-28 07:32:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:32:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 750 transitions. [2020-11-28 07:32:29,185 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 750 transitions. Word has length 187 [2020-11-28 07:32:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:29,186 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 750 transitions. [2020-11-28 07:32:29,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:32:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 750 transitions. [2020-11-28 07:32:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-28 07:32:29,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:29,190 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1] [2020-11-28 07:32:29,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:32:29,410 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:29,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:29,410 INFO L82 PathProgramCache]: Analyzing trace with hash -209800018, now seen corresponding path program 1 times [2020-11-28 07:32:29,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:29,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180424044] [2020-11-28 07:32:29,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 132 proven. 8 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-11-28 07:32:29,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180424044] [2020-11-28 07:32:29,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794920479] [2020-11-28 07:32:29,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:32:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:29,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:32:29,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:32:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-11-28 07:32:29,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:32:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-11-28 07:32:29,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:32:29,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-11-28 07:32:29,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210196088] [2020-11-28 07:32:29,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:32:29,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:32:29,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:32:29,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:32:29,870 INFO L87 Difference]: Start difference. First operand 643 states and 750 transitions. Second operand 4 states. [2020-11-28 07:32:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:30,492 INFO L93 Difference]: Finished difference Result 1443 states and 1711 transitions. [2020-11-28 07:32:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:32:30,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2020-11-28 07:32:30,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:30,493 INFO L225 Difference]: With dead ends: 1443 [2020-11-28 07:32:30,493 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:32:30,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:32:30,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:32:30,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:32:30,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:32:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:32:30,495 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 205 [2020-11-28 07:32:30,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:30,496 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:32:30,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:32:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:32:30,496 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:32:30,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:32:30,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:32:30,999 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-11-28 07:32:31,226 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-11-28 07:32:31,230 INFO L274 CegarLoopResult]: For program point L565-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:32:31,230 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:32:31,230 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:32:31,230 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L568-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:32:31,231 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:32:31,232 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:32:31,233 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:32:31,234 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:32:31,234 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:32:31,234 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:32:31,234 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:32:31,234 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:32:31,234 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:32:31,234 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:32:31,234 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:32:31,234 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:32:31,235 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse6 (<= ~a28~0 7)) (.cse1 (= ~a25~0 0)) (.cse7 (<= ~a17~0 7)) (.cse0 (= ~a19~0 1)) (.cse2 (= ~a21~0 1)) (.cse4 (<= 8 ~a17~0)) (.cse8 (<= ~a19~0 0)) (.cse5 (= ~a25~0 1)) (.cse3 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse4 .cse5 .cse3) (and (= ~a25~0 ~a11~0) .cse0 .cse6 .cse7) (and .cse4 .cse5 .cse3 .cse6) (and .cse8 .cse7) (and .cse1 .cse3 (< ~a28~0 9)) (and .cse0 .cse1 .cse7) (and .cse0 .cse2 .cse4 (not (= ~a11~0 1)) .cse3 (= ~a28~0 10)) (and .cse8 .cse5 .cse3))) [2020-11-28 07:32:31,235 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:32:31,235 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:32:31,235 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:32:31,235 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:32:31,235 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:32:31,235 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:32:31,235 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:32:31,235 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:32:31,235 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:32:31,235 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:32:31,235 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:32:31,236 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse6 (<= ~a28~0 7)) (.cse1 (= ~a25~0 0)) (.cse7 (<= ~a17~0 7)) (.cse0 (= ~a19~0 1)) (.cse2 (= ~a21~0 1)) (.cse4 (<= 8 ~a17~0)) (.cse8 (<= ~a19~0 0)) (.cse5 (= ~a25~0 1)) (.cse3 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse4 .cse5 .cse3) (and (= ~a25~0 ~a11~0) .cse0 .cse6 .cse7) (and .cse4 .cse5 .cse3 .cse6) (and .cse8 .cse7) (and .cse1 .cse3 (< ~a28~0 9)) (and .cse0 .cse1 .cse7) (and .cse0 .cse2 .cse4 (not (= ~a11~0 1)) .cse3 (= ~a28~0 10)) (and .cse8 .cse5 .cse3))) [2020-11-28 07:32:31,236 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:32:31,236 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:32:31,236 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:32:31,236 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:32:31,236 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:32:31,236 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:32:31,236 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:32:31,236 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:32:31,236 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:32:31,236 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:32:31,237 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:32:31,237 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:32:31,237 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:32:31,237 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:32:31,237 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:32:31,237 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:32:31,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:32:31 BoogieIcfgContainer [2020-11-28 07:32:31,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:32:31,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:32:31,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:32:31,279 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:32:31,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:32:20" (3/4) ... [2020-11-28 07:32:31,282 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:32:31,313 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2020-11-28 07:32:31,315 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:32:31,316 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:32:31,318 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:32:31,475 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_82c217c2-fd3c-49bf-8812-1250d3e7c844/bin/utaipan/witness.graphml [2020-11-28 07:32:31,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:32:31,476 INFO L168 Benchmark]: Toolchain (without parser) took 14251.05 ms. Allocated memory was 140.5 MB in the beginning and 364.9 MB in the end (delta: 224.4 MB). Free memory was 106.9 MB in the beginning and 283.9 MB in the end (delta: -177.0 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:31,477 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 81.8 MB. Free memory is still 42.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:32:31,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.93 ms. Allocated memory is still 140.5 MB. Free memory was 106.9 MB in the beginning and 100.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:31,478 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.69 ms. Allocated memory is still 140.5 MB. Free memory was 99.6 MB in the beginning and 94.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:31,478 INFO L168 Benchmark]: Boogie Preprocessor took 65.54 ms. Allocated memory is still 140.5 MB. Free memory was 94.6 MB in the beginning and 90.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:31,478 INFO L168 Benchmark]: RCFGBuilder took 2668.04 ms. Allocated memory was 140.5 MB in the beginning and 178.3 MB in the end (delta: 37.7 MB). Free memory was 90.0 MB in the beginning and 88.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 66.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:31,479 INFO L168 Benchmark]: TraceAbstraction took 10602.20 ms. Allocated memory was 178.3 MB in the beginning and 364.9 MB in the end (delta: 186.6 MB). Free memory was 88.7 MB in the beginning and 299.6 MB in the end (delta: -211.0 MB). Peak memory consumption was 157.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:31,479 INFO L168 Benchmark]: Witness Printer took 197.21 ms. Allocated memory is still 364.9 MB. Free memory was 299.6 MB in the beginning and 283.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:31,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 81.8 MB. Free memory is still 42.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 633.93 ms. Allocated memory is still 140.5 MB. Free memory was 106.9 MB in the beginning and 100.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.69 ms. Allocated memory is still 140.5 MB. Free memory was 99.6 MB in the beginning and 94.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.54 ms. Allocated memory is still 140.5 MB. Free memory was 94.6 MB in the beginning and 90.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2668.04 ms. Allocated memory was 140.5 MB in the beginning and 178.3 MB in the end (delta: 37.7 MB). Free memory was 90.0 MB in the beginning and 88.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 66.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10602.20 ms. Allocated memory was 178.3 MB in the beginning and 364.9 MB in the end (delta: 186.6 MB). Free memory was 88.7 MB in the beginning and 299.6 MB in the end (delta: -211.0 MB). Peak memory consumption was 157.1 MB. Max. memory is 16.1 GB. * Witness Printer took 197.21 ms. Allocated memory is still 364.9 MB. Free memory was 299.6 MB in the beginning and 283.9 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: ((((((((((a19 == 1 && a25 == 0) && a21 == 1) && a17 <= 8) || ((((a19 == 1 && a21 == 1) && 8 <= a17) && a25 == 1) && a17 <= 8)) || (((a25 == a11 && a19 == 1) && a28 <= 7) && a17 <= 7)) || (((8 <= a17 && a25 == 1) && a17 <= 8) && a28 <= 7)) || (a19 <= 0 && a17 <= 7)) || ((a25 == 0 && a17 <= 8) && a28 < 9)) || ((a19 == 1 && a25 == 0) && a17 <= 7)) || (((((a19 == 1 && a21 == 1) && 8 <= a17) && !(a11 == 1)) && a17 <= 8) && a28 == 10)) || ((a19 <= 0 && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((a19 == 1 && a25 == 0) && a21 == 1) && a17 <= 8) || ((((a19 == 1 && a21 == 1) && 8 <= a17) && a25 == 1) && a17 <= 8)) || (((a25 == a11 && a19 == 1) && a28 <= 7) && a17 <= 7)) || (((8 <= a17 && a25 == 1) && a17 <= 8) && a28 <= 7)) || (a19 <= 0 && a17 <= 7)) || ((a25 == 0 && a17 <= 8) && a28 < 9)) || ((a19 == 1 && a25 == 0) && a17 <= 7)) || (((((a19 == 1 && a21 == 1) && 8 <= a17) && !(a11 == 1)) && a17 <= 8) && a28 == 10)) || ((a19 <= 0 && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.9s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 596 SDtfs, 889 SDslu, 73 SDs, 0 SdLazy, 2442 SolverSat, 654 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1611 GetRequests, 1580 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 261 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 227 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1026 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 56 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 2139 NumberOfCodeBlocks, 2139 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2914 ConstructedInterpolants, 0 QuantifiedInterpolants, 907172 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1991 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 2473/2524 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...