./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label30.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_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label30.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/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 4a525aa37d40889eb24e6cfe05fc1bbc60528354 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:29,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:29,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:29,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:29,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:29,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:29,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:29,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:29,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:29,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:29,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:29,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:29,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:29,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:29,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:29,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:29,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:29,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:29,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:29,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:29,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:29,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:29,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:29,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:29,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:29,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:29,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:29,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:29,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:29,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:29,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:29,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:29,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:29,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:29,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:29,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:29,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:29,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:29,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:29,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:29,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:29,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:29,993 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:29,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:29,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:29,996 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:29,996 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:29,996 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:29,996 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:29,996 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:29,997 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:29,997 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:29,998 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:29,998 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:29,998 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:29,999 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:29,999 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:29,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:30,000 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:30,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:30,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:30,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:30,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:30,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:30,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:30,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:30,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:30,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:30,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:30,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:30,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:30,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:30,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:30,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:30,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:30,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:30,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:30,004 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:30,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:30,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:30,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:30,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:30,004 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_ee2ea53f-12cf-4108-8ef9-06173b1dd980/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a525aa37d40889eb24e6cfe05fc1bbc60528354 [2020-11-28 07:42:30,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:30,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:30,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:30,302 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:30,302 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:30,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label30.c [2020-11-28 07:42:30,382 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/data/56281779a/046eb7d73a6a441d9ffe9b94ad60974b/FLAGfee4cfe51 [2020-11-28 07:42:31,088 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:31,089 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/sv-benchmarks/c/eca-rers2012/Problem01_label30.c [2020-11-28 07:42:31,109 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/data/56281779a/046eb7d73a6a441d9ffe9b94ad60974b/FLAGfee4cfe51 [2020-11-28 07:42:31,256 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/data/56281779a/046eb7d73a6a441d9ffe9b94ad60974b [2020-11-28 07:42:31,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:31,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:31,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:31,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:31,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:31,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:31" (1/1) ... [2020-11-28 07:42:31,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e513e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:31, skipping insertion in model container [2020-11-28 07:42:31,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:31" (1/1) ... [2020-11-28 07:42:31,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:31,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:31,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:31,813 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:31,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:32,002 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:32,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:32 WrapperNode [2020-11-28 07:42:32,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:32,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:32,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:32,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:32,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:32" (1/1) ... [2020-11-28 07:42:32,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:32" (1/1) ... [2020-11-28 07:42:32,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:32,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:32,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:32,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:32,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:32" (1/1) ... [2020-11-28 07:42:32,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:32" (1/1) ... [2020-11-28 07:42:32,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:32" (1/1) ... [2020-11-28 07:42:32,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:32" (1/1) ... [2020-11-28 07:42:32,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:32" (1/1) ... [2020-11-28 07:42:32,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:32" (1/1) ... [2020-11-28 07:42:32,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:32" (1/1) ... [2020-11-28 07:42:32,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:32,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:32,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:32,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:32,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:34,808 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:34,808 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:42:34,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:34 BoogieIcfgContainer [2020-11-28 07:42:34,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:34,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:34,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:34,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:34,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:31" (1/3) ... [2020-11-28 07:42:34,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e34f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:34, skipping insertion in model container [2020-11-28 07:42:34,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:32" (2/3) ... [2020-11-28 07:42:34,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e34f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:34, skipping insertion in model container [2020-11-28 07:42:34,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:34" (3/3) ... [2020-11-28 07:42:34,820 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label30.c [2020-11-28 07:42:34,833 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:34,838 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:34,849 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:34,872 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:34,872 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:34,873 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:34,873 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:34,873 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:34,873 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:34,873 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:34,873 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:42:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:42:34,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:34,896 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] [2020-11-28 07:42:34,896 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:34,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:34,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1520713837, now seen corresponding path program 1 times [2020-11-28 07:42:34,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:34,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809119490] [2020-11-28 07:42:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:35,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:35,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809119490] [2020-11-28 07:42:35,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:35,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:35,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712059063] [2020-11-28 07:42:35,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:35,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:35,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:35,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:35,426 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-11-28 07:42:36,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:36,427 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2020-11-28 07:42:36,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:36,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-11-28 07:42:36,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:36,438 INFO L225 Difference]: With dead ends: 297 [2020-11-28 07:42:36,438 INFO L226 Difference]: Without dead ends: 216 [2020-11-28 07:42:36,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:36,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-28 07:42:36,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-28 07:42:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-28 07:42:36,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2020-11-28 07:42:36,495 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2020-11-28 07:42:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:36,495 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2020-11-28 07:42:36,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:36,496 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2020-11-28 07:42:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-28 07:42:36,501 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:36,501 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:36,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:36,501 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:36,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:36,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1832084932, now seen corresponding path program 1 times [2020-11-28 07:42:36,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:36,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536233686] [2020-11-28 07:42:36,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:36,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536233686] [2020-11-28 07:42:36,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:36,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:36,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590572580] [2020-11-28 07:42:36,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:36,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:36,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:36,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:36,783 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2020-11-28 07:42:37,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:37,480 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2020-11-28 07:42:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:37,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-28 07:42:37,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:37,485 INFO L225 Difference]: With dead ends: 500 [2020-11-28 07:42:37,485 INFO L226 Difference]: Without dead ends: 287 [2020-11-28 07:42:37,487 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 [2020-11-28 07:42:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-28 07:42:37,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2020-11-28 07:42:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-28 07:42:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2020-11-28 07:42:37,520 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2020-11-28 07:42:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:37,521 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2020-11-28 07:42:37,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2020-11-28 07:42:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-28 07:42:37,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:37,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:37,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:42:37,526 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:37,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:37,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1009058888, now seen corresponding path program 1 times [2020-11-28 07:42:37,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:37,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572888984] [2020-11-28 07:42:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:37,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572888984] [2020-11-28 07:42:37,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:37,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:37,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878886642] [2020-11-28 07:42:37,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:37,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:37,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:37,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:37,602 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2020-11-28 07:42:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:38,094 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-11-28 07:42:38,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:38,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-28 07:42:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:38,099 INFO L225 Difference]: With dead ends: 573 [2020-11-28 07:42:38,099 INFO L226 Difference]: Without dead ends: 358 [2020-11-28 07:42:38,100 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 [2020-11-28 07:42:38,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-28 07:42:38,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-11-28 07:42:38,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-28 07:42:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2020-11-28 07:42:38,150 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 86 [2020-11-28 07:42:38,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:38,152 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2020-11-28 07:42:38,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:38,153 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2020-11-28 07:42:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-28 07:42:38,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:38,169 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2020-11-28 07:42:38,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:42:38,170 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:38,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:38,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1460485918, now seen corresponding path program 1 times [2020-11-28 07:42:38,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:38,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7098120] [2020-11-28 07:42:38,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:42:38,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7098120] [2020-11-28 07:42:38,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:38,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:38,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265265131] [2020-11-28 07:42:38,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:38,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:38,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:38,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:38,282 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand 3 states. [2020-11-28 07:42:38,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:38,652 INFO L93 Difference]: Finished difference Result 999 states and 1341 transitions. [2020-11-28 07:42:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:38,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-11-28 07:42:38,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:38,656 INFO L225 Difference]: With dead ends: 999 [2020-11-28 07:42:38,657 INFO L226 Difference]: Without dead ends: 642 [2020-11-28 07:42:38,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:38,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-28 07:42:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-11-28 07:42:38,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-28 07:42:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 780 transitions. [2020-11-28 07:42:38,688 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 780 transitions. Word has length 95 [2020-11-28 07:42:38,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:38,689 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 780 transitions. [2020-11-28 07:42:38,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:38,689 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 780 transitions. [2020-11-28 07:42:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-28 07:42:38,691 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:38,692 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2020-11-28 07:42:38,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:42:38,692 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:38,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:38,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1655709871, now seen corresponding path program 1 times [2020-11-28 07:42:38,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:38,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871202243] [2020-11-28 07:42:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:38,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871202243] [2020-11-28 07:42:38,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:38,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:42:38,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888828529] [2020-11-28 07:42:38,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:38,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:38,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:38,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:38,792 INFO L87 Difference]: Start difference. First operand 571 states and 780 transitions. Second operand 4 states. [2020-11-28 07:42:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:39,310 INFO L93 Difference]: Finished difference Result 1283 states and 1756 transitions. [2020-11-28 07:42:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:39,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-11-28 07:42:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:39,315 INFO L225 Difference]: With dead ends: 1283 [2020-11-28 07:42:39,315 INFO L226 Difference]: Without dead ends: 713 [2020-11-28 07:42:39,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:39,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-28 07:42:39,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2020-11-28 07:42:39,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-28 07:42:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 859 transitions. [2020-11-28 07:42:39,340 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 859 transitions. Word has length 101 [2020-11-28 07:42:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:39,341 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 859 transitions. [2020-11-28 07:42:39,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:39,341 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 859 transitions. [2020-11-28 07:42:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-28 07:42:39,343 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:39,344 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:39,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:42:39,345 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:39,346 INFO L82 PathProgramCache]: Analyzing trace with hash 224025172, now seen corresponding path program 1 times [2020-11-28 07:42:39,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:39,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017449509] [2020-11-28 07:42:39,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:42:39,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017449509] [2020-11-28 07:42:39,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:39,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:39,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345301500] [2020-11-28 07:42:39,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:39,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:39,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:39,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:39,537 INFO L87 Difference]: Start difference. First operand 642 states and 859 transitions. Second operand 4 states. [2020-11-28 07:42:40,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:40,093 INFO L93 Difference]: Finished difference Result 1496 states and 1980 transitions. [2020-11-28 07:42:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:40,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-11-28 07:42:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:40,098 INFO L225 Difference]: With dead ends: 1496 [2020-11-28 07:42:40,099 INFO L226 Difference]: Without dead ends: 855 [2020-11-28 07:42:40,099 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 [2020-11-28 07:42:40,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-28 07:42:40,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2020-11-28 07:42:40,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-28 07:42:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1024 transitions. [2020-11-28 07:42:40,114 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1024 transitions. Word has length 115 [2020-11-28 07:42:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:40,114 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1024 transitions. [2020-11-28 07:42:40,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1024 transitions. [2020-11-28 07:42:40,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-11-28 07:42:40,122 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:40,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:40,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:42:40,122 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:40,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:40,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1209430439, now seen corresponding path program 1 times [2020-11-28 07:42:40,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:40,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57340100] [2020-11-28 07:42:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:42:40,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57340100] [2020-11-28 07:42:40,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:40,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:40,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842179614] [2020-11-28 07:42:40,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:40,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:40,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:40,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:40,281 INFO L87 Difference]: Start difference. First operand 784 states and 1024 transitions. Second operand 3 states. [2020-11-28 07:42:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:40,600 INFO L93 Difference]: Finished difference Result 1709 states and 2200 transitions. [2020-11-28 07:42:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:40,601 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-11-28 07:42:40,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:40,606 INFO L225 Difference]: With dead ends: 1709 [2020-11-28 07:42:40,606 INFO L226 Difference]: Without dead ends: 926 [2020-11-28 07:42:40,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-28 07:42:40,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-11-28 07:42:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-28 07:42:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1018 transitions. [2020-11-28 07:42:40,632 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1018 transitions. Word has length 132 [2020-11-28 07:42:40,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:40,632 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1018 transitions. [2020-11-28 07:42:40,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:40,633 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1018 transitions. [2020-11-28 07:42:40,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-11-28 07:42:40,635 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:40,636 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:40,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:42:40,636 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:40,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:40,637 INFO L82 PathProgramCache]: Analyzing trace with hash -585302257, now seen corresponding path program 1 times [2020-11-28 07:42:40,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:40,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596539484] [2020-11-28 07:42:40,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-28 07:42:40,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596539484] [2020-11-28 07:42:40,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:40,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:42:40,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641998615] [2020-11-28 07:42:40,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:40,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:40,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:40,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:40,823 INFO L87 Difference]: Start difference. First operand 784 states and 1018 transitions. Second operand 4 states. [2020-11-28 07:42:41,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:41,235 INFO L93 Difference]: Finished difference Result 1733 states and 2212 transitions. [2020-11-28 07:42:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:41,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-11-28 07:42:41,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:41,241 INFO L225 Difference]: With dead ends: 1733 [2020-11-28 07:42:41,241 INFO L226 Difference]: Without dead ends: 950 [2020-11-28 07:42:41,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-11-28 07:42:41,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 855. [2020-11-28 07:42:41,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-28 07:42:41,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1057 transitions. [2020-11-28 07:42:41,267 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1057 transitions. Word has length 175 [2020-11-28 07:42:41,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:41,268 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1057 transitions. [2020-11-28 07:42:41,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:41,269 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1057 transitions. [2020-11-28 07:42:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-11-28 07:42:41,272 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:41,272 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:42:41,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:42:41,273 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:41,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:41,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1756892680, now seen corresponding path program 1 times [2020-11-28 07:42:41,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:41,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064516736] [2020-11-28 07:42:41,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-28 07:42:41,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064516736] [2020-11-28 07:42:41,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:41,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:41,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112158903] [2020-11-28 07:42:41,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:41,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:41,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:41,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:41,430 INFO L87 Difference]: Start difference. First operand 855 states and 1057 transitions. Second operand 3 states. [2020-11-28 07:42:41,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:41,766 INFO L93 Difference]: Finished difference Result 1851 states and 2337 transitions. [2020-11-28 07:42:41,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:41,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2020-11-28 07:42:41,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:41,772 INFO L225 Difference]: With dead ends: 1851 [2020-11-28 07:42:41,772 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:42:41,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:41,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:42:41,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-11-28 07:42:41,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-28 07:42:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1234 transitions. [2020-11-28 07:42:41,802 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1234 transitions. Word has length 188 [2020-11-28 07:42:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:41,802 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1234 transitions. [2020-11-28 07:42:41,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1234 transitions. [2020-11-28 07:42:41,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-11-28 07:42:41,808 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:41,808 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:41,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:42:41,808 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:41,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:41,809 INFO L82 PathProgramCache]: Analyzing trace with hash 15740198, now seen corresponding path program 1 times [2020-11-28 07:42:41,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:41,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397808803] [2020-11-28 07:42:41,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 124 proven. 67 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:42:42,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397808803] [2020-11-28 07:42:42,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726297847] [2020-11-28 07:42:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:42,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:42:42,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-11-28 07:42:42,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-11-28 07:42:42,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:42:42,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-11-28 07:42:42,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355853670] [2020-11-28 07:42:42,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:42,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:42,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:42,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:42,496 INFO L87 Difference]: Start difference. First operand 997 states and 1234 transitions. Second operand 3 states. [2020-11-28 07:42:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:43,006 INFO L93 Difference]: Finished difference Result 2277 states and 2880 transitions. [2020-11-28 07:42:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:43,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-11-28 07:42:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:43,017 INFO L225 Difference]: With dead ends: 2277 [2020-11-28 07:42:43,017 INFO L226 Difference]: Without dead ends: 1281 [2020-11-28 07:42:43,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:43,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-28 07:42:43,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2020-11-28 07:42:43,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-28 07:42:43,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1493 transitions. [2020-11-28 07:42:43,063 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1493 transitions. Word has length 197 [2020-11-28 07:42:43,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:43,063 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1493 transitions. [2020-11-28 07:42:43,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:43,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1493 transitions. [2020-11-28 07:42:43,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-11-28 07:42:43,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:43,068 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] [2020-11-28 07:42:43,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:42:43,281 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash -170403838, now seen corresponding path program 1 times [2020-11-28 07:42:43,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:43,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800353903] [2020-11-28 07:42:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:43,652 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 175 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:42:43,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800353903] [2020-11-28 07:42:43,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565598104] [2020-11-28 07:42:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:43,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:42:43,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-11-28 07:42:43,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-11-28 07:42:43,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:42:43,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-28 07:42:43,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985843206] [2020-11-28 07:42:43,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:43,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:43,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:43,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:43,985 INFO L87 Difference]: Start difference. First operand 1210 states and 1493 transitions. Second operand 3 states. [2020-11-28 07:42:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:44,399 INFO L93 Difference]: Finished difference Result 2490 states and 3080 transitions. [2020-11-28 07:42:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:44,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2020-11-28 07:42:44,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:44,409 INFO L225 Difference]: With dead ends: 2490 [2020-11-28 07:42:44,409 INFO L226 Difference]: Without dead ends: 1281 [2020-11-28 07:42:44,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 424 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-28 07:42:44,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2020-11-28 07:42:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-28 07:42:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1459 transitions. [2020-11-28 07:42:44,489 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1459 transitions. Word has length 213 [2020-11-28 07:42:44,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:44,490 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1459 transitions. [2020-11-28 07:42:44,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1459 transitions. [2020-11-28 07:42:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-11-28 07:42:44,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:44,496 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:42:44,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:44,718 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:44,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:44,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1051110269, now seen corresponding path program 1 times [2020-11-28 07:42:44,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:44,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023040625] [2020-11-28 07:42:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-11-28 07:42:44,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023040625] [2020-11-28 07:42:44,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:44,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:44,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499520388] [2020-11-28 07:42:44,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:44,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:44,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:44,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:44,905 INFO L87 Difference]: Start difference. First operand 1210 states and 1459 transitions. Second operand 3 states. [2020-11-28 07:42:45,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:45,192 INFO L93 Difference]: Finished difference Result 2204 states and 2624 transitions. [2020-11-28 07:42:45,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:45,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2020-11-28 07:42:45,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:45,193 INFO L225 Difference]: With dead ends: 2204 [2020-11-28 07:42:45,193 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:42:45,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:42:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:42:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:42:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:42:45,196 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 227 [2020-11-28 07:42:45,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:45,196 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:42:45,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:45,196 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:42:45,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:42:45,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 07:42:45,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:42:45,559 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-11-28 07:42:45,783 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-11-28 07:42:45,785 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:42:45,785 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:42:45,785 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:42:45,785 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:42:45,786 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:42:45,787 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:42:45,787 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:42:45,787 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:42:45,787 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:42:45,787 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:42:45,788 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:42:45,789 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:42:45,789 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:42:45,789 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:42:45,789 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:42:45,789 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:42:45,789 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse8 (= ~a20~0 1))) (let ((.cse3 (not .cse8)) (.cse1 (= ~a16~0 6)) (.cse9 (= ~a12~0 8)) (.cse2 (not (= ~a7~0 1))) (.cse4 (= ~a17~0 1)) (.cse0 (= ~a21~0 1)) (.cse6 (<= ~a17~0 0)) (.cse5 (<= ~a16~0 5)) (.cse7 (<= ~a21~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse2 .cse3 .cse4) (and .cse1 .cse6 .cse7) (and .cse0 .cse6 .cse8 .cse2) (and .cse0 .cse9 (= ~a8~0 13) .cse8 (= ~a16~0 4) .cse4) (and .cse0 .cse1 .cse6 .cse2) (and .cse0 .cse9 .cse8 .cse2 .cse4) (and .cse0 .cse5 .cse6) (and .cse5 .cse7)))) [2020-11-28 07:42:45,789 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:42:45,789 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:42:45,790 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:42:45,791 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:42:45,791 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:42:45,791 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:42:45,791 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:42:45,791 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:42:45,791 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:42:45,791 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:42:45,791 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:42:45,791 INFO L274 CegarLoopResult]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:42:45,791 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse8 (= ~a20~0 1))) (let ((.cse3 (not .cse8)) (.cse1 (= ~a16~0 6)) (.cse9 (= ~a12~0 8)) (.cse2 (not (= ~a7~0 1))) (.cse4 (= ~a17~0 1)) (.cse0 (= ~a21~0 1)) (.cse6 (<= ~a17~0 0)) (.cse5 (<= ~a16~0 5)) (.cse7 (<= ~a21~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse2 .cse3 .cse4) (and .cse1 .cse6 .cse7) (and .cse0 .cse6 .cse8 .cse2) (and .cse0 .cse9 (= ~a8~0 13) .cse8 (= ~a16~0 4) .cse4) (and .cse0 .cse1 .cse6 .cse2) (and .cse0 .cse9 .cse8 .cse2 .cse4) (and .cse0 .cse5 .cse6) (and .cse5 .cse7)))) [2020-11-28 07:42:45,791 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:42:45,792 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:42:45,792 INFO L274 CegarLoopResult]: For program point L561(line 561) no Hoare annotation was computed. [2020-11-28 07:42:45,792 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:42:45,792 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:42:45,792 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:42:45,792 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:42:45,792 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:42:45,792 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:42:45,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:45 BoogieIcfgContainer [2020-11-28 07:42:45,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:45,831 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:45,831 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:45,832 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:45,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:34" (3/4) ... [2020-11-28 07:42:45,835 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:42:45,867 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-28 07:42:45,869 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-11-28 07:42:45,871 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:42:45,872 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:42:46,039 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ee2ea53f-12cf-4108-8ef9-06173b1dd980/bin/utaipan/witness.graphml [2020-11-28 07:42:46,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:46,040 INFO L168 Benchmark]: Toolchain (without parser) took 14780.88 ms. Allocated memory was 107.0 MB in the beginning and 419.4 MB in the end (delta: 312.5 MB). Free memory was 80.2 MB in the beginning and 384.3 MB in the end (delta: -304.1 MB). Peak memory consumption was 257.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:46,041 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:46,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.16 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 53.1 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:46,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.25 ms. Allocated memory is still 107.0 MB. Free memory was 53.1 MB in the beginning and 47.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:46,042 INFO L168 Benchmark]: Boogie Preprocessor took 76.22 ms. Allocated memory is still 107.0 MB. Free memory was 47.4 MB in the beginning and 42.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:46,042 INFO L168 Benchmark]: RCFGBuilder took 2612.75 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 42.9 MB in the beginning and 79.0 MB in the end (delta: -36.1 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:46,043 INFO L168 Benchmark]: TraceAbstraction took 11018.92 ms. Allocated memory was 157.3 MB in the beginning and 419.4 MB in the end (delta: 262.1 MB). Free memory was 78.0 MB in the beginning and 152.0 MB in the end (delta: -74.0 MB). Peak memory consumption was 190.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:46,043 INFO L168 Benchmark]: Witness Printer took 208.18 ms. Allocated memory is still 419.4 MB. Free memory was 152.0 MB in the beginning and 384.3 MB in the end (delta: -232.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:46,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 743.16 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 53.1 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.25 ms. Allocated memory is still 107.0 MB. Free memory was 53.1 MB in the beginning and 47.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.22 ms. Allocated memory is still 107.0 MB. Free memory was 47.4 MB in the beginning and 42.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2612.75 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 42.9 MB in the beginning and 79.0 MB in the end (delta: -36.1 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11018.92 ms. Allocated memory was 157.3 MB in the beginning and 419.4 MB in the end (delta: 262.1 MB). Free memory was 78.0 MB in the beginning and 152.0 MB in the end (delta: -74.0 MB). Peak memory consumption was 190.2 MB. Max. memory is 16.1 GB. * Witness Printer took 208.18 ms. Allocated memory is still 419.4 MB. Free memory was 152.0 MB in the beginning and 384.3 MB in the end (delta: -232.4 MB). Peak memory consumption was 14.0 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: (((((((((((a21 == 1 && a16 == 6) && !(a7 == 1)) && !(a20 == 1)) && a17 == 1) || ((((a21 == 1 && a16 <= 5) && !(a7 == 1)) && !(a20 == 1)) && a17 == 1)) || ((a16 == 6 && a17 <= 0) && a21 <= 0)) || (((a21 == 1 && a17 <= 0) && a20 == 1) && !(a7 == 1))) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || (((a21 == 1 && a16 == 6) && a17 <= 0) && !(a7 == 1))) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a21 == 1 && a16 <= 5) && a17 <= 0)) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((((a21 == 1 && a16 == 6) && !(a7 == 1)) && !(a20 == 1)) && a17 == 1) || ((((a21 == 1 && a16 <= 5) && !(a7 == 1)) && !(a20 == 1)) && a17 == 1)) || ((a16 == 6 && a17 <= 0) && a21 <= 0)) || (((a21 == 1 && a17 <= 0) && a20 == 1) && !(a7 == 1))) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || (((a21 == 1 && a16 == 6) && a17 <= 0) && !(a7 == 1))) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a21 == 1 && a16 <= 5) && a17 <= 0)) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.3s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 670 SDtfs, 1102 SDslu, 69 SDs, 0 SdLazy, 3043 SolverSat, 771 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 860 GetRequests, 833 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1210occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 663 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 36 NumberOfFragments, 257 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2846 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 916 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 2088 NumberOfCodeBlocks, 2088 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2482 ConstructedInterpolants, 0 QuantifiedInterpolants, 1458830 SizeOfPredicates, 2 NumberOfNonLiveVariables, 958 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 2372/2522 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...