./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label09.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_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/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 c3bec4a19ad486e7769a1ae863b766e21c94d89f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:59:33,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:59:33,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:59:33,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:59:33,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:59:33,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:59:33,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:59:33,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:59:33,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:59:33,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:59:33,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:59:33,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:59:33,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:59:33,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:59:33,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:59:33,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:59:33,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:59:33,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:59:33,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:59:33,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:59:33,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:59:33,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:59:33,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:59:33,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:59:33,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:59:33,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:59:33,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:59:33,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:59:33,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:59:33,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:59:33,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:59:33,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:59:33,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:59:33,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:59:33,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:59:33,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:59:33,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:59:33,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:59:33,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:59:33,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:59:33,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:59:33,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:59:33,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:59:33,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:59:33,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:59:33,905 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:59:33,906 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:59:33,906 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:59:33,906 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:59:33,906 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:59:33,906 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:59:33,906 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:59:33,907 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:59:33,907 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:59:33,910 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:59:33,910 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:59:33,910 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:59:33,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:59:33,911 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:59:33,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:59:33,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:59:33,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:59:33,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:59:33,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:59:33,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:59:33,912 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:59:33,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:59:33,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:59:33,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:59:33,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:59:33,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:59:33,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:59:33,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:59:33,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:59:33,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:59:33,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:59:33,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:59:33,917 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:59:33,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:59:33,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:59:33,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:59:33,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:59:33,919 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_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3bec4a19ad486e7769a1ae863b766e21c94d89f [2020-11-22 12:59:34,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:59:34,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:59:34,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:59:34,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:59:34,237 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:59:34,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2020-11-22 12:59:34,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/data/e92dda97a/dafa6b6d74474a96961caa2df8932562/FLAG5ff60d925 [2020-11-22 12:59:34,880 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:59:34,881 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2020-11-22 12:59:34,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/data/e92dda97a/dafa6b6d74474a96961caa2df8932562/FLAG5ff60d925 [2020-11-22 12:59:35,129 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/data/e92dda97a/dafa6b6d74474a96961caa2df8932562 [2020-11-22 12:59:35,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:59:35,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:59:35,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:35,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:59:35,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:59:35,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:35" (1/1) ... [2020-11-22 12:59:35,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277e9cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35, skipping insertion in model container [2020-11-22 12:59:35,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:35" (1/1) ... [2020-11-22 12:59:35,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:59:35,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:59:35,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:35,704 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:59:35,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:35,871 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:59:35,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35 WrapperNode [2020-11-22 12:59:35,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:35,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:35,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:59:35,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:59:35,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35" (1/1) ... [2020-11-22 12:59:35,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35" (1/1) ... [2020-11-22 12:59:35,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:35,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:59:35,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:59:35,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:59:35,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35" (1/1) ... [2020-11-22 12:59:35,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35" (1/1) ... [2020-11-22 12:59:35,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35" (1/1) ... [2020-11-22 12:59:35,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35" (1/1) ... [2020-11-22 12:59:36,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35" (1/1) ... [2020-11-22 12:59:36,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35" (1/1) ... [2020-11-22 12:59:36,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35" (1/1) ... [2020-11-22 12:59:36,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:59:36,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:59:36,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:59:36,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:59:36,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:59:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:59:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:59:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:59:36,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:59:38,634 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:59:38,634 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:59:38,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:38 BoogieIcfgContainer [2020-11-22 12:59:38,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:59:38,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:59:38,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:59:38,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:59:38,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:59:35" (1/3) ... [2020-11-22 12:59:38,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2d558e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:38, skipping insertion in model container [2020-11-22 12:59:38,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:35" (2/3) ... [2020-11-22 12:59:38,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2d558e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:38, skipping insertion in model container [2020-11-22 12:59:38,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:38" (3/3) ... [2020-11-22 12:59:38,644 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label09.c [2020-11-22 12:59:38,654 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:59:38,662 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:59:38,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:59:38,703 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:59:38,703 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:59:38,704 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:59:38,704 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:59:38,704 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:59:38,704 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:59:38,704 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:59:38,705 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:59:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-22 12:59:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-22 12:59:38,732 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:38,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:38,733 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:38,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:38,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1520712045, now seen corresponding path program 1 times [2020-11-22 12:59:38,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:38,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528265780] [2020-11-22 12:59:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:39,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528265780] [2020-11-22 12:59:39,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:39,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:39,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187964902] [2020-11-22 12:59:39,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:39,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:39,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:39,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:39,224 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-22 12:59:39,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:39,808 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-22 12:59:39,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:39,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-22 12:59:39,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:39,819 INFO L225 Difference]: With dead ends: 224 [2020-11-22 12:59:39,820 INFO L226 Difference]: Without dead ends: 145 [2020-11-22 12:59:39,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:39,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-22 12:59:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-22 12:59:39,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-22 12:59:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-11-22 12:59:39,885 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-11-22 12:59:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:39,887 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-11-22 12:59:39,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-11-22 12:59:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-22 12:59:39,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:39,895 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 12:59:39,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:59:39,895 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:39,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:39,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1350083903, now seen corresponding path program 1 times [2020-11-22 12:59:39,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:39,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233219760] [2020-11-22 12:59:39,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:39,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233219760] [2020-11-22 12:59:39,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:39,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:39,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908391485] [2020-11-22 12:59:40,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:40,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:40,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:40,004 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-11-22 12:59:40,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:40,531 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-11-22 12:59:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:40,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-11-22 12:59:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:40,535 INFO L225 Difference]: With dead ends: 431 [2020-11-22 12:59:40,535 INFO L226 Difference]: Without dead ends: 287 [2020-11-22 12:59:40,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:40,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-22 12:59:40,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-22 12:59:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-22 12:59:40,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 479 transitions. [2020-11-22 12:59:40,558 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 479 transitions. Word has length 76 [2020-11-22 12:59:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:40,559 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 479 transitions. [2020-11-22 12:59:40,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 479 transitions. [2020-11-22 12:59:40,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-22 12:59:40,562 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:40,562 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:40,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:59:40,563 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:40,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:40,563 INFO L82 PathProgramCache]: Analyzing trace with hash 24309890, now seen corresponding path program 1 times [2020-11-22 12:59:40,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:40,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79859637] [2020-11-22 12:59:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 12:59:40,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79859637] [2020-11-22 12:59:40,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:40,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:40,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753523863] [2020-11-22 12:59:40,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:40,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:40,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:40,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:40,625 INFO L87 Difference]: Start difference. First operand 287 states and 479 transitions. Second operand 3 states. [2020-11-22 12:59:41,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:41,145 INFO L93 Difference]: Finished difference Result 857 states and 1434 transitions. [2020-11-22 12:59:41,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:41,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-11-22 12:59:41,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:41,150 INFO L225 Difference]: With dead ends: 857 [2020-11-22 12:59:41,150 INFO L226 Difference]: Without dead ends: 571 [2020-11-22 12:59:41,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:41,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-22 12:59:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-11-22 12:59:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-22 12:59:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 883 transitions. [2020-11-22 12:59:41,186 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 883 transitions. Word has length 86 [2020-11-22 12:59:41,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:41,186 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 883 transitions. [2020-11-22 12:59:41,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 883 transitions. [2020-11-22 12:59:41,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-22 12:59:41,192 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:41,192 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2020-11-22 12:59:41,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:59:41,193 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:41,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:41,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1345541042, now seen corresponding path program 1 times [2020-11-22 12:59:41,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:41,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878423116] [2020-11-22 12:59:41,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 12:59:41,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878423116] [2020-11-22 12:59:41,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:41,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:41,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774382561] [2020-11-22 12:59:41,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:41,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:41,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:41,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:41,273 INFO L87 Difference]: Start difference. First operand 571 states and 883 transitions. Second operand 3 states. [2020-11-22 12:59:41,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:41,767 INFO L93 Difference]: Finished difference Result 1567 states and 2438 transitions. [2020-11-22 12:59:41,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:41,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-22 12:59:41,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:41,774 INFO L225 Difference]: With dead ends: 1567 [2020-11-22 12:59:41,774 INFO L226 Difference]: Without dead ends: 997 [2020-11-22 12:59:41,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:41,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-22 12:59:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 713. [2020-11-22 12:59:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-11-22 12:59:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1044 transitions. [2020-11-22 12:59:41,822 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1044 transitions. Word has length 91 [2020-11-22 12:59:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:41,824 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1044 transitions. [2020-11-22 12:59:41,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1044 transitions. [2020-11-22 12:59:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-22 12:59:41,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:41,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:41,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:59:41,838 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:41,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:41,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1848421864, now seen corresponding path program 1 times [2020-11-22 12:59:41,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:41,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627123129] [2020-11-22 12:59:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:41,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627123129] [2020-11-22 12:59:41,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:41,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:41,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490715288] [2020-11-22 12:59:41,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:41,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:41,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:41,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:41,953 INFO L87 Difference]: Start difference. First operand 713 states and 1044 transitions. Second operand 3 states. [2020-11-22 12:59:42,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:42,520 INFO L93 Difference]: Finished difference Result 2064 states and 3033 transitions. [2020-11-22 12:59:42,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:42,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-11-22 12:59:42,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:42,529 INFO L225 Difference]: With dead ends: 2064 [2020-11-22 12:59:42,529 INFO L226 Difference]: Without dead ends: 1352 [2020-11-22 12:59:42,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:42,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-22 12:59:42,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2020-11-22 12:59:42,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-22 12:59:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1607 transitions. [2020-11-22 12:59:42,562 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1607 transitions. Word has length 94 [2020-11-22 12:59:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:42,563 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1607 transitions. [2020-11-22 12:59:42,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1607 transitions. [2020-11-22 12:59:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-22 12:59:42,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:42,567 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-22 12:59:42,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:59:42,567 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:42,568 INFO L82 PathProgramCache]: Analyzing trace with hash 114934542, now seen corresponding path program 1 times [2020-11-22 12:59:42,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:42,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335399418] [2020-11-22 12:59:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-22 12:59:42,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335399418] [2020-11-22 12:59:42,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:42,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:42,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49513] [2020-11-22 12:59:42,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:42,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:42,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:42,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:42,660 INFO L87 Difference]: Start difference. First operand 1139 states and 1607 transitions. Second operand 3 states. [2020-11-22 12:59:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:43,097 INFO L93 Difference]: Finished difference Result 2419 states and 3373 transitions. [2020-11-22 12:59:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:43,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-22 12:59:43,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:43,104 INFO L225 Difference]: With dead ends: 2419 [2020-11-22 12:59:43,104 INFO L226 Difference]: Without dead ends: 1210 [2020-11-22 12:59:43,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:43,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-22 12:59:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2020-11-22 12:59:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-22 12:59:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1472 transitions. [2020-11-22 12:59:43,139 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1472 transitions. Word has length 98 [2020-11-22 12:59:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:43,140 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1472 transitions. [2020-11-22 12:59:43,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:43,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1472 transitions. [2020-11-22 12:59:43,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-22 12:59:43,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:43,149 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:43,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:59:43,149 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:43,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:43,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1447508884, now seen corresponding path program 1 times [2020-11-22 12:59:43,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:43,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542291831] [2020-11-22 12:59:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-22 12:59:43,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542291831] [2020-11-22 12:59:43,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:43,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:43,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142492945] [2020-11-22 12:59:43,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:43,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:43,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:43,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:43,259 INFO L87 Difference]: Start difference. First operand 1210 states and 1472 transitions. Second operand 4 states. [2020-11-22 12:59:43,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:43,852 INFO L93 Difference]: Finished difference Result 2490 states and 3044 transitions. [2020-11-22 12:59:43,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:43,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-11-22 12:59:43,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:43,860 INFO L225 Difference]: With dead ends: 2490 [2020-11-22 12:59:43,860 INFO L226 Difference]: Without dead ends: 1352 [2020-11-22 12:59:43,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-22 12:59:43,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2020-11-22 12:59:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-22 12:59:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1352 transitions. [2020-11-22 12:59:43,890 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1352 transitions. Word has length 102 [2020-11-22 12:59:43,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:43,891 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1352 transitions. [2020-11-22 12:59:43,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1352 transitions. [2020-11-22 12:59:43,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-22 12:59:43,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:43,894 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:43,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:59:43,894 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:43,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:43,895 INFO L82 PathProgramCache]: Analyzing trace with hash 554921150, now seen corresponding path program 1 times [2020-11-22 12:59:43,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:43,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618060680] [2020-11-22 12:59:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-22 12:59:43,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618060680] [2020-11-22 12:59:43,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:43,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:43,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553749342] [2020-11-22 12:59:43,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:43,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:43,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:43,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:43,960 INFO L87 Difference]: Start difference. First operand 1139 states and 1352 transitions. Second operand 3 states. [2020-11-22 12:59:44,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:44,383 INFO L93 Difference]: Finished difference Result 2703 states and 3253 transitions. [2020-11-22 12:59:44,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:44,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-22 12:59:44,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:44,394 INFO L225 Difference]: With dead ends: 2703 [2020-11-22 12:59:44,394 INFO L226 Difference]: Without dead ends: 1636 [2020-11-22 12:59:44,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:44,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-11-22 12:59:44,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1423. [2020-11-22 12:59:44,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2020-11-22 12:59:44,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1726 transitions. [2020-11-22 12:59:44,436 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1726 transitions. Word has length 111 [2020-11-22 12:59:44,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:44,437 INFO L481 AbstractCegarLoop]: Abstraction has 1423 states and 1726 transitions. [2020-11-22 12:59:44,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:44,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1726 transitions. [2020-11-22 12:59:44,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-22 12:59:44,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:44,441 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:44,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:59:44,442 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:44,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:44,443 INFO L82 PathProgramCache]: Analyzing trace with hash -632912650, now seen corresponding path program 1 times [2020-11-22 12:59:44,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:44,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764822449] [2020-11-22 12:59:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-22 12:59:44,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764822449] [2020-11-22 12:59:44,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:44,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:44,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371769950] [2020-11-22 12:59:44,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:44,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:44,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:44,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:44,534 INFO L87 Difference]: Start difference. First operand 1423 states and 1726 transitions. Second operand 3 states. [2020-11-22 12:59:44,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:44,916 INFO L93 Difference]: Finished difference Result 2987 states and 3627 transitions. [2020-11-22 12:59:44,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:44,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-11-22 12:59:44,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:44,927 INFO L225 Difference]: With dead ends: 2987 [2020-11-22 12:59:44,927 INFO L226 Difference]: Without dead ends: 1565 [2020-11-22 12:59:44,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-11-22 12:59:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2020-11-22 12:59:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-11-22 12:59:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1882 transitions. [2020-11-22 12:59:44,982 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1882 transitions. Word has length 127 [2020-11-22 12:59:44,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:44,982 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1882 transitions. [2020-11-22 12:59:44,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:44,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1882 transitions. [2020-11-22 12:59:44,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-22 12:59:44,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:44,988 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-11-22 12:59:44,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 12:59:44,988 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:44,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:44,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1221452336, now seen corresponding path program 1 times [2020-11-22 12:59:44,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:44,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145368282] [2020-11-22 12:59:44,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-22 12:59:45,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145368282] [2020-11-22 12:59:45,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:45,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:45,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569562046] [2020-11-22 12:59:45,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:45,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:45,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:45,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:45,115 INFO L87 Difference]: Start difference. First operand 1565 states and 1882 transitions. Second operand 4 states. [2020-11-22 12:59:45,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:45,663 INFO L93 Difference]: Finished difference Result 3129 states and 3775 transitions. [2020-11-22 12:59:45,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:45,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-11-22 12:59:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:45,671 INFO L225 Difference]: With dead ends: 3129 [2020-11-22 12:59:45,672 INFO L226 Difference]: Without dead ends: 1636 [2020-11-22 12:59:45,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:45,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-11-22 12:59:45,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1565. [2020-11-22 12:59:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-11-22 12:59:45,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1862 transitions. [2020-11-22 12:59:45,741 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1862 transitions. Word has length 131 [2020-11-22 12:59:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:45,741 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1862 transitions. [2020-11-22 12:59:45,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1862 transitions. [2020-11-22 12:59:45,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-22 12:59:45,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:45,746 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:45,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 12:59:45,746 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:45,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:45,747 INFO L82 PathProgramCache]: Analyzing trace with hash -175180925, now seen corresponding path program 1 times [2020-11-22 12:59:45,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:45,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793510615] [2020-11-22 12:59:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-22 12:59:45,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793510615] [2020-11-22 12:59:45,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:45,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:45,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438783265] [2020-11-22 12:59:45,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:45,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:45,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:45,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:45,894 INFO L87 Difference]: Start difference. First operand 1565 states and 1862 transitions. Second operand 3 states. [2020-11-22 12:59:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:46,222 INFO L93 Difference]: Finished difference Result 3413 states and 4101 transitions. [2020-11-22 12:59:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:46,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-22 12:59:46,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:46,232 INFO L225 Difference]: With dead ends: 3413 [2020-11-22 12:59:46,232 INFO L226 Difference]: Without dead ends: 1778 [2020-11-22 12:59:46,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:46,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-11-22 12:59:46,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1636. [2020-11-22 12:59:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2020-11-22 12:59:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1946 transitions. [2020-11-22 12:59:46,293 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1946 transitions. Word has length 148 [2020-11-22 12:59:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:46,293 INFO L481 AbstractCegarLoop]: Abstraction has 1636 states and 1946 transitions. [2020-11-22 12:59:46,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1946 transitions. [2020-11-22 12:59:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-11-22 12:59:46,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:46,299 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-22 12:59:46,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 12:59:46,299 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:46,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:46,300 INFO L82 PathProgramCache]: Analyzing trace with hash 316518635, now seen corresponding path program 1 times [2020-11-22 12:59:46,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:46,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006445592] [2020-11-22 12:59:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-22 12:59:46,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006445592] [2020-11-22 12:59:46,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:46,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:46,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768196930] [2020-11-22 12:59:46,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:46,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:46,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:46,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:46,426 INFO L87 Difference]: Start difference. First operand 1636 states and 1946 transitions. Second operand 3 states. [2020-11-22 12:59:46,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:46,803 INFO L93 Difference]: Finished difference Result 3342 states and 3975 transitions. [2020-11-22 12:59:46,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:46,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-11-22 12:59:46,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:46,812 INFO L225 Difference]: With dead ends: 3342 [2020-11-22 12:59:46,812 INFO L226 Difference]: Without dead ends: 1778 [2020-11-22 12:59:46,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:46,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-11-22 12:59:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1707. [2020-11-22 12:59:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2020-11-22 12:59:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1971 transitions. [2020-11-22 12:59:46,855 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1971 transitions. Word has length 191 [2020-11-22 12:59:46,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:46,855 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 1971 transitions. [2020-11-22 12:59:46,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:46,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1971 transitions. [2020-11-22 12:59:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-11-22 12:59:46,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:46,861 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-22 12:59:46,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-22 12:59:46,861 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:46,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:46,861 INFO L82 PathProgramCache]: Analyzing trace with hash -942297628, now seen corresponding path program 1 times [2020-11-22 12:59:46,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:46,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158889567] [2020-11-22 12:59:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 194 proven. 35 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-22 12:59:47,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158889567] [2020-11-22 12:59:47,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249532829] [2020-11-22 12:59:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:59:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:47,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:59:47,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-11-22 12:59:47,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-11-22 12:59:47,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:59:47,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-22 12:59:47,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131170342] [2020-11-22 12:59:47,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:47,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:47,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:47,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:47,630 INFO L87 Difference]: Start difference. First operand 1707 states and 1971 transitions. Second operand 3 states. [2020-11-22 12:59:48,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:48,167 INFO L93 Difference]: Finished difference Result 3413 states and 3953 transitions. [2020-11-22 12:59:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:48,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-11-22 12:59:48,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:48,177 INFO L225 Difference]: With dead ends: 3413 [2020-11-22 12:59:48,177 INFO L226 Difference]: Without dead ends: 1778 [2020-11-22 12:59:48,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 405 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:48,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-11-22 12:59:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1565. [2020-11-22 12:59:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-11-22 12:59:48,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1798 transitions. [2020-11-22 12:59:48,251 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1798 transitions. Word has length 204 [2020-11-22 12:59:48,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:48,251 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1798 transitions. [2020-11-22 12:59:48,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:48,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1798 transitions. [2020-11-22 12:59:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-11-22 12:59:48,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:48,256 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-22 12:59:48,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-22 12:59:48,479 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:48,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:48,479 INFO L82 PathProgramCache]: Analyzing trace with hash -170405630, now seen corresponding path program 1 times [2020-11-22 12:59:48,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:48,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089765866] [2020-11-22 12:59:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 175 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-22 12:59:48,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089765866] [2020-11-22 12:59:48,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778152879] [2020-11-22 12:59:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:59:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:49,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:59:49,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-11-22 12:59:49,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-11-22 12:59:49,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:59:49,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2020-11-22 12:59:49,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281870840] [2020-11-22 12:59:49,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:49,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:49,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:59:49,228 INFO L87 Difference]: Start difference. First operand 1565 states and 1798 transitions. Second operand 4 states. [2020-11-22 12:59:49,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:49,878 INFO L93 Difference]: Finished difference Result 3482 states and 4042 transitions. [2020-11-22 12:59:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:49,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2020-11-22 12:59:49,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:49,879 INFO L225 Difference]: With dead ends: 3482 [2020-11-22 12:59:49,879 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:59:49,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:59:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:59:49,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:59:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:59:49,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:59:49,883 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 213 [2020-11-22 12:59:49,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:49,883 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:59:49,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:49,884 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:59:49,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:59:50,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-22 12:59:50,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:59:50,541 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-11-22 12:59:50,843 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-11-22 12:59:50,846 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-22 12:59:50,846 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-22 12:59:50,846 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-22 12:59:50,846 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-22 12:59:50,846 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-22 12:59:50,846 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-22 12:59:50,846 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-22 12:59:50,846 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-22 12:59:50,847 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-22 12:59:50,847 INFO L274 CegarLoopResult]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:59:50,847 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-22 12:59:50,847 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-22 12:59:50,847 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-22 12:59:50,847 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-22 12:59:50,847 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-22 12:59:50,847 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-22 12:59:50,847 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-22 12:59:50,847 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-22 12:59:50,847 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-22 12:59:50,848 INFO L274 CegarLoopResult]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:59:50,848 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-22 12:59:50,848 INFO L274 CegarLoopResult]: For program point L540(line 540) no Hoare annotation was computed. [2020-11-22 12:59:50,848 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-22 12:59:50,848 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-22 12:59:50,849 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-22 12:59:50,849 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-22 12:59:50,849 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-22 12:59:50,849 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-22 12:59:50,849 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-22 12:59:50,849 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-22 12:59:50,849 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-22 12:59:50,849 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-22 12:59:50,850 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-22 12:59:50,850 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-22 12:59:50,850 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-22 12:59:50,850 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-22 12:59:50,850 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-22 12:59:50,850 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-22 12:59:50,850 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-22 12:59:50,850 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:59:50,851 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-22 12:59:50,851 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-22 12:59:50,851 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-22 12:59:50,851 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse0 (< 13 ~a8~0)) (.cse3 (let ((.cse8 (<= ~a8~0 13))) (or (and .cse2 .cse8) (and .cse6 .cse8)))) (.cse4 (= ~a16~0 6)) (.cse1 (= ~a21~0 1)) (.cse5 (<= ~a16~0 5)) (.cse7 (<= ~a7~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4) (and .cse0 .cse5) (<= ~a16~0 4) (and .cse3 .cse2 .cse6) (and .cse4 (<= 15 ~a8~0)) (and .cse1 .cse7 .cse2) (and .cse5 .cse7)))) [2020-11-22 12:59:50,851 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-22 12:59:50,852 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-22 12:59:50,852 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-22 12:59:50,852 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-22 12:59:50,852 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-22 12:59:50,852 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-22 12:59:50,852 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-22 12:59:50,852 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:59:50,853 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-22 12:59:50,853 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-22 12:59:50,853 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-22 12:59:50,853 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-22 12:59:50,853 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-22 12:59:50,853 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-22 12:59:50,853 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-22 12:59:50,853 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-22 12:59:50,854 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-22 12:59:50,854 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-22 12:59:50,854 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-22 12:59:50,854 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-22 12:59:50,854 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-22 12:59:50,854 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-22 12:59:50,854 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-22 12:59:50,855 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse0 (< 13 ~a8~0)) (.cse3 (let ((.cse8 (<= ~a8~0 13))) (or (and .cse2 .cse8) (and .cse6 .cse8)))) (.cse4 (= ~a16~0 6)) (.cse1 (= ~a21~0 1)) (.cse5 (<= ~a16~0 5)) (.cse7 (<= ~a7~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4) (and .cse0 .cse5) (<= ~a16~0 4) (and .cse3 .cse2 .cse6) (and .cse4 (<= 15 ~a8~0)) (and .cse1 .cse7 .cse2) (and .cse5 .cse7)))) [2020-11-22 12:59:50,855 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-22 12:59:50,855 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:59:50,855 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-22 12:59:50,855 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-22 12:59:50,855 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-22 12:59:50,856 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-22 12:59:50,856 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-22 12:59:50,856 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-22 12:59:50,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:59:50 BoogieIcfgContainer [2020-11-22 12:59:50,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:59:50,886 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:59:50,886 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:59:50,886 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:59:50,887 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:38" (3/4) ... [2020-11-22 12:59:50,890 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:59:50,918 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-11-22 12:59:50,920 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 12:59:50,921 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:59:50,923 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:59:51,067 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6c8cd8d3-5a89-4ca8-81f9-d5491f2fdb76/bin/utaipan/witness.graphml [2020-11-22 12:59:51,068 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:59:51,069 INFO L168 Benchmark]: Toolchain (without parser) took 15936.51 ms. Allocated memory was 113.2 MB in the beginning and 343.9 MB in the end (delta: 230.7 MB). Free memory was 76.5 MB in the beginning and 113.0 MB in the end (delta: -36.5 MB). Peak memory consumption was 195.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:51,069 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 75.5 MB. Free memory is still 33.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:51,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.12 ms. Allocated memory is still 113.2 MB. Free memory was 76.5 MB in the beginning and 70.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:51,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.83 ms. Allocated memory is still 113.2 MB. Free memory was 70.8 MB in the beginning and 65.2 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:51,070 INFO L168 Benchmark]: Boogie Preprocessor took 61.46 ms. Allocated memory is still 113.2 MB. Free memory was 65.2 MB in the beginning and 61.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:51,070 INFO L168 Benchmark]: RCFGBuilder took 2596.38 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 60.4 MB in the beginning and 53.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:51,071 INFO L168 Benchmark]: TraceAbstraction took 12248.53 ms. Allocated memory was 142.6 MB in the beginning and 343.9 MB in the end (delta: 201.3 MB). Free memory was 53.5 MB in the beginning and 127.9 MB in the end (delta: -74.4 MB). Peak memory consumption was 125.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:51,071 INFO L168 Benchmark]: Witness Printer took 181.71 ms. Allocated memory is still 343.9 MB. Free memory was 127.9 MB in the beginning and 113.0 MB in the end (delta: 14.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:51,073 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 75.5 MB. Free memory is still 33.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 731.12 ms. Allocated memory is still 113.2 MB. Free memory was 76.5 MB in the beginning and 70.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.83 ms. Allocated memory is still 113.2 MB. Free memory was 70.8 MB in the beginning and 65.2 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.46 ms. Allocated memory is still 113.2 MB. Free memory was 65.2 MB in the beginning and 61.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2596.38 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 60.4 MB in the beginning and 53.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12248.53 ms. Allocated memory was 142.6 MB in the beginning and 343.9 MB in the end (delta: 201.3 MB). Free memory was 53.5 MB in the beginning and 127.9 MB in the end (delta: -74.4 MB). Peak memory consumption was 125.9 MB. Max. memory is 16.1 GB. * Witness Printer took 181.71 ms. Allocated memory is still 343.9 MB. Free memory was 127.9 MB in the beginning and 113.0 MB in the end (delta: 14.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 40]: Loop Invariant Derived loop invariant: ((((((((13 < a8 && a21 == 1) && a20 == 1) || (((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a16 == 6)) || (13 < a8 && a16 <= 5)) || a16 <= 4) || ((((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a20 == 1) && a17 == 1)) || (a16 == 6 && 15 <= a8)) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (a16 <= 5 && a7 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((13 < a8 && a21 == 1) && a20 == 1) || (((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a16 == 6)) || (13 < a8 && a16 <= 5)) || a16 <= 4) || ((((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a20 == 1) && a17 == 1)) || (a16 == 6 && 15 <= a8)) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (a16 <= 5 && a7 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.4s, OverallIterations: 14, TraceHistogramMax: 7, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 674 SDtfs, 1013 SDslu, 66 SDs, 0 SdLazy, 3087 SolverSat, 724 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 872 GetRequests, 846 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1707occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 1420 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 71 NumberOfFragments, 173 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3366 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 448 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 2160 NumberOfCodeBlocks, 2160 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2559 ConstructedInterpolants, 0 QuantifiedInterpolants, 1333056 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1010 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 2435/2553 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...