./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label59.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_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label59.c -s /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/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 32dcd17dd6150ce526d1225c284848d771c5c1e8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:08:13,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:08:13,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:08:13,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:08:13,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:08:13,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:08:13,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:08:13,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:08:13,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:08:13,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:08:13,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:08:13,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:08:13,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:08:13,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:08:13,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:08:13,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:08:13,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:08:13,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:08:13,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:08:13,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:08:13,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:08:13,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:08:13,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:08:13,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:08:13,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:08:13,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:08:13,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:08:13,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:08:13,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:08:13,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:08:13,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:08:13,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:08:13,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:08:13,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:08:13,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:08:13,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:08:13,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:08:13,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:08:13,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:08:13,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:08:13,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:08:13,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:08:13,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:08:13,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:08:13,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:08:13,984 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:08:13,984 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:08:13,985 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:08:13,985 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:08:13,985 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:08:13,986 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:08:13,986 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:08:13,987 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:08:13,987 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:08:13,988 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:08:13,988 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:08:13,988 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:08:13,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:08:13,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:08:13,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:08:13,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:08:13,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:08:13,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:08:13,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:08:13,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:08:13,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:08:13,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:08:13,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:08:13,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:08:13,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:08:13,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:08:13,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:08:13,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:08:13,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:13,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:08:13,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:08:13,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:08:13,996 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:08:13,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:08:13,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:08:13,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:08:13,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:08:13,997 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_70db56a4-2d6a-4285-b4eb-b0c8226f1907/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32dcd17dd6150ce526d1225c284848d771c5c1e8 [2020-11-22 13:08:14,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:08:14,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:08:14,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:08:14,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:08:14,337 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:08:14,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label59.c [2020-11-22 13:08:14,412 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/data/866c447ac/be7f52d5f1a14919881fd94a7e5d210b/FLAG1085a2484 [2020-11-22 13:08:14,976 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:08:14,977 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/sv-benchmarks/c/eca-rers2012/Problem01_label59.c [2020-11-22 13:08:14,990 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/data/866c447ac/be7f52d5f1a14919881fd94a7e5d210b/FLAG1085a2484 [2020-11-22 13:08:15,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/data/866c447ac/be7f52d5f1a14919881fd94a7e5d210b [2020-11-22 13:08:15,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:08:15,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:08:15,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:15,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:08:15,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:08:15,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:15" (1/1) ... [2020-11-22 13:08:15,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d304f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15, skipping insertion in model container [2020-11-22 13:08:15,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:15" (1/1) ... [2020-11-22 13:08:15,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:08:15,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:15,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:15,787 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:08:15,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:15,919 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:08:15,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15 WrapperNode [2020-11-22 13:08:15,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:15,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:15,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:08:15,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:08:15,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15" (1/1) ... [2020-11-22 13:08:15,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15" (1/1) ... [2020-11-22 13:08:16,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:16,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:08:16,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:08:16,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:08:16,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15" (1/1) ... [2020-11-22 13:08:16,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15" (1/1) ... [2020-11-22 13:08:16,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15" (1/1) ... [2020-11-22 13:08:16,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15" (1/1) ... [2020-11-22 13:08:16,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15" (1/1) ... [2020-11-22 13:08:16,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15" (1/1) ... [2020-11-22 13:08:16,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15" (1/1) ... [2020-11-22 13:08:16,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:08:16,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:08:16,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:08:16,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:08:16,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:08:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:08:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:08:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:08:18,555 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:08:18,555 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:08:18,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:18 BoogieIcfgContainer [2020-11-22 13:08:18,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:08:18,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:08:18,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:08:18,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:08:18,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:15" (1/3) ... [2020-11-22 13:08:18,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f6f503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:18, skipping insertion in model container [2020-11-22 13:08:18,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:15" (2/3) ... [2020-11-22 13:08:18,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f6f503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:18, skipping insertion in model container [2020-11-22 13:08:18,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:18" (3/3) ... [2020-11-22 13:08:18,566 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label59.c [2020-11-22 13:08:18,580 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:08:18,584 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:08:18,595 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:08:18,630 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:08:18,630 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:08:18,630 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:08:18,630 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:08:18,630 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:08:18,631 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:08:18,631 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:08:18,631 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:08:18,651 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-22 13:08:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-22 13:08:18,659 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:18,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:18,661 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:18,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:18,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1520704621, now seen corresponding path program 1 times [2020-11-22 13:08:18,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:18,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30705541] [2020-11-22 13:08:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:19,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30705541] [2020-11-22 13:08:19,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:19,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:19,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282538616] [2020-11-22 13:08:19,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:19,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:19,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:19,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:19,149 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-22 13:08:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:19,737 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-22 13:08:19,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:19,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-22 13:08:19,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:19,762 INFO L225 Difference]: With dead ends: 224 [2020-11-22 13:08:19,762 INFO L226 Difference]: Without dead ends: 145 [2020-11-22 13:08:19,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:19,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-22 13:08:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-22 13:08:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-22 13:08:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2020-11-22 13:08:19,827 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2020-11-22 13:08:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:19,828 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2020-11-22 13:08:19,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2020-11-22 13:08:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-22 13:08:19,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:19,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:19,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:08:19,832 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:19,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:19,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1975141566, now seen corresponding path program 1 times [2020-11-22 13:08:19,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:19,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986149519] [2020-11-22 13:08:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:19,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986149519] [2020-11-22 13:08:19,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:19,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:19,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84119847] [2020-11-22 13:08:19,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:19,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:19,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:19,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:19,898 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2020-11-22 13:08:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:20,393 INFO L93 Difference]: Finished difference Result 360 states and 654 transitions. [2020-11-22 13:08:20,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:20,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-22 13:08:20,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:20,396 INFO L225 Difference]: With dead ends: 360 [2020-11-22 13:08:20,396 INFO L226 Difference]: Without dead ends: 216 [2020-11-22 13:08:20,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:20,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-22 13:08:20,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-22 13:08:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-22 13:08:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 378 transitions. [2020-11-22 13:08:20,414 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 378 transitions. Word has length 77 [2020-11-22 13:08:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:20,414 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 378 transitions. [2020-11-22 13:08:20,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:20,415 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 378 transitions. [2020-11-22 13:08:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-22 13:08:20,418 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:20,418 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] [2020-11-22 13:08:20,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:08:20,418 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:20,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:20,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1832094148, now seen corresponding path program 1 times [2020-11-22 13:08:20,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:20,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615004226] [2020-11-22 13:08:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:20,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615004226] [2020-11-22 13:08:20,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:20,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:08:20,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272343370] [2020-11-22 13:08:20,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:20,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:20,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:20,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:20,544 INFO L87 Difference]: Start difference. First operand 216 states and 378 transitions. Second operand 3 states. [2020-11-22 13:08:20,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:20,971 INFO L93 Difference]: Finished difference Result 644 states and 1131 transitions. [2020-11-22 13:08:20,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:20,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-11-22 13:08:20,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:20,977 INFO L225 Difference]: With dead ends: 644 [2020-11-22 13:08:20,977 INFO L226 Difference]: Without dead ends: 429 [2020-11-22 13:08:20,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-22 13:08:21,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 287. [2020-11-22 13:08:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-22 13:08:21,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 473 transitions. [2020-11-22 13:08:21,004 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 473 transitions. Word has length 78 [2020-11-22 13:08:21,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:21,005 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 473 transitions. [2020-11-22 13:08:21,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:21,005 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 473 transitions. [2020-11-22 13:08:21,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-22 13:08:21,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:21,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:21,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:08:21,008 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:21,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:21,009 INFO L82 PathProgramCache]: Analyzing trace with hash 647144157, now seen corresponding path program 1 times [2020-11-22 13:08:21,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:21,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20299590] [2020-11-22 13:08:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:21,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20299590] [2020-11-22 13:08:21,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:21,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:21,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128227514] [2020-11-22 13:08:21,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:21,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:21,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:21,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:21,101 INFO L87 Difference]: Start difference. First operand 287 states and 473 transitions. Second operand 3 states. [2020-11-22 13:08:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:21,554 INFO L93 Difference]: Finished difference Result 857 states and 1416 transitions. [2020-11-22 13:08:21,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:21,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-11-22 13:08:21,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:21,557 INFO L225 Difference]: With dead ends: 857 [2020-11-22 13:08:21,558 INFO L226 Difference]: Without dead ends: 500 [2020-11-22 13:08:21,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:21,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-22 13:08:21,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2020-11-22 13:08:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-22 13:08:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 591 transitions. [2020-11-22 13:08:21,590 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 591 transitions. Word has length 79 [2020-11-22 13:08:21,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:21,590 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 591 transitions. [2020-11-22 13:08:21,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:21,591 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 591 transitions. [2020-11-22 13:08:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-22 13:08:21,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:21,600 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:21,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:08:21,600 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:21,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:21,601 INFO L82 PathProgramCache]: Analyzing trace with hash 102964247, now seen corresponding path program 1 times [2020-11-22 13:08:21,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:21,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052116741] [2020-11-22 13:08:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:21,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052116741] [2020-11-22 13:08:21,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:21,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:08:21,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649775462] [2020-11-22 13:08:21,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:08:21,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:21,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:08:21,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:21,707 INFO L87 Difference]: Start difference. First operand 429 states and 591 transitions. Second operand 4 states. [2020-11-22 13:08:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:22,303 INFO L93 Difference]: Finished difference Result 1283 states and 1770 transitions. [2020-11-22 13:08:22,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:08:22,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-11-22 13:08:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:22,309 INFO L225 Difference]: With dead ends: 1283 [2020-11-22 13:08:22,309 INFO L226 Difference]: Without dead ends: 855 [2020-11-22 13:08:22,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:22,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-22 13:08:22,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2020-11-22 13:08:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-11-22 13:08:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 918 transitions. [2020-11-22 13:08:22,347 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 918 transitions. Word has length 83 [2020-11-22 13:08:22,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:22,348 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 918 transitions. [2020-11-22 13:08:22,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:08:22,348 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 918 transitions. [2020-11-22 13:08:22,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-22 13:08:22,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:22,351 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:22,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:08:22,352 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:22,353 INFO L82 PathProgramCache]: Analyzing trace with hash 128887685, now seen corresponding path program 1 times [2020-11-22 13:08:22,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:22,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849504956] [2020-11-22 13:08:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:22,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849504956] [2020-11-22 13:08:22,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:22,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:22,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087947990] [2020-11-22 13:08:22,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:22,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:22,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:22,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:22,491 INFO L87 Difference]: Start difference. First operand 713 states and 918 transitions. Second operand 3 states. [2020-11-22 13:08:22,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:22,885 INFO L93 Difference]: Finished difference Result 1567 states and 2007 transitions. [2020-11-22 13:08:22,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:22,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-11-22 13:08:22,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:22,893 INFO L225 Difference]: With dead ends: 1567 [2020-11-22 13:08:22,894 INFO L226 Difference]: Without dead ends: 855 [2020-11-22 13:08:22,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:22,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-22 13:08:22,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2020-11-22 13:08:22,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-22 13:08:22,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1076 transitions. [2020-11-22 13:08:22,925 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1076 transitions. Word has length 100 [2020-11-22 13:08:22,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:22,926 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1076 transitions. [2020-11-22 13:08:22,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:22,932 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1076 transitions. [2020-11-22 13:08:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-22 13:08:22,935 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:22,935 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-22 13:08:22,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:08:22,935 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:22,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:22,936 INFO L82 PathProgramCache]: Analyzing trace with hash 832576139, now seen corresponding path program 1 times [2020-11-22 13:08:22,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:22,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086964541] [2020-11-22 13:08:22,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:23,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086964541] [2020-11-22 13:08:23,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:23,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:08:23,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950245889] [2020-11-22 13:08:23,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:08:23,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:23,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:08:23,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:23,088 INFO L87 Difference]: Start difference. First operand 855 states and 1076 transitions. Second operand 4 states. [2020-11-22 13:08:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:23,698 INFO L93 Difference]: Finished difference Result 1851 states and 2333 transitions. [2020-11-22 13:08:23,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:08:23,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-11-22 13:08:23,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:23,704 INFO L225 Difference]: With dead ends: 1851 [2020-11-22 13:08:23,704 INFO L226 Difference]: Without dead ends: 997 [2020-11-22 13:08:23,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:23,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-22 13:08:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2020-11-22 13:08:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-22 13:08:23,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1151 transitions. [2020-11-22 13:08:23,731 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1151 transitions. Word has length 104 [2020-11-22 13:08:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:23,732 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1151 transitions. [2020-11-22 13:08:23,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:08:23,732 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1151 transitions. [2020-11-22 13:08:23,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-22 13:08:23,735 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:23,735 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-22 13:08:23,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:08:23,735 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:23,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:23,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1154614408, now seen corresponding path program 1 times [2020-11-22 13:08:23,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:23,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857248823] [2020-11-22 13:08:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:23,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857248823] [2020-11-22 13:08:23,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:23,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:08:23,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876393989] [2020-11-22 13:08:23,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:08:23,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:23,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:08:23,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:23,859 INFO L87 Difference]: Start difference. First operand 926 states and 1151 transitions. Second operand 4 states. [2020-11-22 13:08:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:24,513 INFO L93 Difference]: Finished difference Result 2135 states and 2641 transitions. [2020-11-22 13:08:24,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:08:24,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-11-22 13:08:24,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:24,520 INFO L225 Difference]: With dead ends: 2135 [2020-11-22 13:08:24,520 INFO L226 Difference]: Without dead ends: 1210 [2020-11-22 13:08:24,522 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 [2020-11-22 13:08:24,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-22 13:08:24,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 997. [2020-11-22 13:08:24,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-22 13:08:24,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1179 transitions. [2020-11-22 13:08:24,553 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1179 transitions. Word has length 129 [2020-11-22 13:08:24,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:24,554 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1179 transitions. [2020-11-22 13:08:24,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:08:24,554 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1179 transitions. [2020-11-22 13:08:24,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-22 13:08:24,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:24,557 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:24,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:08:24,559 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:24,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1455239494, now seen corresponding path program 1 times [2020-11-22 13:08:24,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:24,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625956877] [2020-11-22 13:08:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:24,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625956877] [2020-11-22 13:08:24,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:24,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:08:24,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024443479] [2020-11-22 13:08:24,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:24,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:24,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:24,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:24,708 INFO L87 Difference]: Start difference. First operand 997 states and 1179 transitions. Second operand 3 states. [2020-11-22 13:08:25,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:25,133 INFO L93 Difference]: Finished difference Result 2064 states and 2434 transitions. [2020-11-22 13:08:25,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:25,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-11-22 13:08:25,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:25,140 INFO L225 Difference]: With dead ends: 2064 [2020-11-22 13:08:25,141 INFO L226 Difference]: Without dead ends: 1068 [2020-11-22 13:08:25,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-22 13:08:25,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2020-11-22 13:08:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-22 13:08:25,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1144 transitions. [2020-11-22 13:08:25,171 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1144 transitions. Word has length 130 [2020-11-22 13:08:25,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:25,171 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1144 transitions. [2020-11-22 13:08:25,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:25,172 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1144 transitions. [2020-11-22 13:08:25,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-11-22 13:08:25,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:25,179 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:25,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 13:08:25,180 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:25,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:25,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1200598647, now seen corresponding path program 1 times [2020-11-22 13:08:25,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:25,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292286805] [2020-11-22 13:08:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-22 13:08:25,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292286805] [2020-11-22 13:08:25,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:25,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:08:25,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810324532] [2020-11-22 13:08:25,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:25,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:25,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:25,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:25,333 INFO L87 Difference]: Start difference. First operand 997 states and 1144 transitions. Second operand 3 states. [2020-11-22 13:08:25,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:25,695 INFO L93 Difference]: Finished difference Result 1993 states and 2287 transitions. [2020-11-22 13:08:25,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:25,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-11-22 13:08:25,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:25,699 INFO L225 Difference]: With dead ends: 1993 [2020-11-22 13:08:25,699 INFO L226 Difference]: Without dead ends: 642 [2020-11-22 13:08:25,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:25,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-22 13:08:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2020-11-22 13:08:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-22 13:08:25,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 700 transitions. [2020-11-22 13:08:25,717 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 700 transitions. Word has length 143 [2020-11-22 13:08:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:25,717 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 700 transitions. [2020-11-22 13:08:25,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:25,717 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 700 transitions. [2020-11-22 13:08:25,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-22 13:08:25,720 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:25,721 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-11-22 13:08:25,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 13:08:25,721 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:25,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:25,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1976364695, now seen corresponding path program 1 times [2020-11-22 13:08:25,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:25,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921676662] [2020-11-22 13:08:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 121 proven. 64 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-22 13:08:26,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921676662] [2020-11-22 13:08:26,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179884026] [2020-11-22 13:08:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:26,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:08:26,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-11-22 13:08:26,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-11-22 13:08:26,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:08:26,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-11-22 13:08:26,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487916227] [2020-11-22 13:08:26,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:08:26,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:26,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:08:26,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:08:26,619 INFO L87 Difference]: Start difference. First operand 642 states and 700 transitions. Second operand 4 states. [2020-11-22 13:08:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:27,146 INFO L93 Difference]: Finished difference Result 1707 states and 1841 transitions. [2020-11-22 13:08:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:08:27,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2020-11-22 13:08:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:27,147 INFO L225 Difference]: With dead ends: 1707 [2020-11-22 13:08:27,147 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:08:27,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:08:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:08:27,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:08:27,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:08:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:08:27,150 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 194 [2020-11-22 13:08:27,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:27,150 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:08:27,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:08:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:08:27,150 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:08:27,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-22 13:08:27,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:08:27,690 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-11-22 13:08:27,904 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-11-22 13:08:27,907 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-22 13:08:27,907 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-22 13:08:27,907 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-22 13:08:27,907 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-22 13:08:27,907 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-22 13:08:27,908 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-22 13:08:27,909 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-22 13:08:27,909 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-22 13:08:27,910 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-22 13:08:27,910 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-22 13:08:27,910 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-22 13:08:27,910 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-22 13:08:27,910 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-22 13:08:27,910 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:08:27,911 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-22 13:08:27,912 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-22 13:08:27,912 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-22 13:08:27,912 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse5 (= ~a7~0 1)) (.cse9 (= ~a20~0 1))) (let ((.cse6 (<= ~a8~0 13)) (.cse8 (= ~a21~0 1)) (.cse2 (= ~a17~0 1)) (.cse3 (<= ~a16~0 5)) (.cse4 (not .cse9)) (.cse0 (not .cse5)) (.cse1 (<= 5 ~a16~0)) (.cse7 (= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2) (and .cse5 .cse6 .cse7) (and .cse5 .cse3 .cse2 .cse6) (and .cse3 .cse4 .cse7) (and .cse5 .cse8 .cse9) (and .cse8 .cse9 .cse7) (and (< ~a8~0 15) .cse8 .cse9 .cse2) (and .cse5 .cse3 .cse4) (and .cse0 .cse1 .cse7)))) [2020-11-22 13:08:27,912 INFO L274 CegarLoopResult]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 13:08:27,912 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-22 13:08:27,912 INFO L274 CegarLoopResult]: For program point L453(line 453) no Hoare annotation was computed. [2020-11-22 13:08:27,912 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-22 13:08:27,913 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-22 13:08:27,914 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-22 13:08:27,914 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-22 13:08:27,914 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-22 13:08:27,914 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-22 13:08:27,914 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-22 13:08:27,914 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-22 13:08:27,914 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-22 13:08:27,914 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse5 (= ~a7~0 1)) (.cse9 (= ~a20~0 1))) (let ((.cse6 (<= ~a8~0 13)) (.cse8 (= ~a21~0 1)) (.cse2 (= ~a17~0 1)) (.cse3 (<= ~a16~0 5)) (.cse4 (not .cse9)) (.cse0 (not .cse5)) (.cse1 (<= 5 ~a16~0)) (.cse7 (= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2) (and .cse5 .cse6 .cse7) (and .cse5 .cse3 .cse2 .cse6) (and .cse3 .cse4 .cse7) (and .cse5 .cse8 .cse9) (and .cse8 .cse9 .cse7) (and (< ~a8~0 15) .cse8 .cse9 .cse2) (and .cse5 .cse3 .cse4) (and .cse0 .cse1 .cse7)))) [2020-11-22 13:08:27,914 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-22 13:08:27,914 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:08:27,915 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-22 13:08:27,915 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-22 13:08:27,915 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-22 13:08:27,915 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-22 13:08:27,915 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-22 13:08:27,915 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-22 13:08:27,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:08:27 BoogieIcfgContainer [2020-11-22 13:08:27,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:08:27,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:08:27,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:08:27,937 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:08:27,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:18" (3/4) ... [2020-11-22 13:08:27,948 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:08:27,978 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-22 13:08:27,986 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 13:08:27,988 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 13:08:27,989 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 13:08:28,167 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_70db56a4-2d6a-4285-b4eb-b0c8226f1907/bin/utaipan/witness.graphml [2020-11-22 13:08:28,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:08:28,169 INFO L168 Benchmark]: Toolchain (without parser) took 12906.09 ms. Allocated memory was 90.2 MB in the beginning and 245.4 MB in the end (delta: 155.2 MB). Free memory was 58.9 MB in the beginning and 116.2 MB in the end (delta: -57.3 MB). Peak memory consumption was 98.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:28,169 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory was 49.6 MB in the beginning and 49.6 MB in the end (delta: 45.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:28,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.70 ms. Allocated memory is still 90.2 MB. Free memory was 58.7 MB in the beginning and 49.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:28,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.56 ms. Allocated memory is still 90.2 MB. Free memory was 49.6 MB in the beginning and 43.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:28,170 INFO L168 Benchmark]: Boogie Preprocessor took 119.74 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 43.9 MB in the beginning and 80.9 MB in the end (delta: -37.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:28,171 INFO L168 Benchmark]: RCFGBuilder took 2425.33 ms. Allocated memory was 109.1 MB in the beginning and 138.4 MB in the end (delta: 29.4 MB). Free memory was 80.9 MB in the beginning and 99.4 MB in the end (delta: -18.4 MB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:28,171 INFO L168 Benchmark]: TraceAbstraction took 9377.41 ms. Allocated memory was 138.4 MB in the beginning and 245.4 MB in the end (delta: 107.0 MB). Free memory was 98.3 MB in the beginning and 132.1 MB in the end (delta: -33.8 MB). Peak memory consumption was 73.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:28,171 INFO L168 Benchmark]: Witness Printer took 231.10 ms. Allocated memory is still 245.4 MB. Free memory was 132.1 MB in the beginning and 116.2 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:28,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory was 49.6 MB in the beginning and 49.6 MB in the end (delta: 45.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 653.70 ms. Allocated memory is still 90.2 MB. Free memory was 58.7 MB in the beginning and 49.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.56 ms. Allocated memory is still 90.2 MB. Free memory was 49.6 MB in the beginning and 43.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 119.74 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 43.9 MB in the beginning and 80.9 MB in the end (delta: -37.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2425.33 ms. Allocated memory was 109.1 MB in the beginning and 138.4 MB in the end (delta: 29.4 MB). Free memory was 80.9 MB in the beginning and 99.4 MB in the end (delta: -18.4 MB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9377.41 ms. Allocated memory was 138.4 MB in the beginning and 245.4 MB in the end (delta: 107.0 MB). Free memory was 98.3 MB in the beginning and 132.1 MB in the end (delta: -33.8 MB). Peak memory consumption was 73.2 MB. Max. memory is 16.1 GB. * Witness Printer took 231.10 ms. Allocated memory is still 245.4 MB. Free memory was 132.1 MB in the beginning and 116.2 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((!(a7 == 1) && 5 <= a16) && a17 == 1) || ((a16 <= 5 && !(a20 == 1)) && a17 == 1)) || ((a7 == 1 && a8 <= 13) && a17 == 0)) || (((a7 == 1 && a16 <= 5) && a17 == 1) && a8 <= 13)) || ((a16 <= 5 && !(a20 == 1)) && a17 == 0)) || ((a7 == 1 && a21 == 1) && a20 == 1)) || ((a21 == 1 && a20 == 1) && a17 == 0)) || (((a8 < 15 && a21 == 1) && a20 == 1) && a17 == 1)) || ((a7 == 1 && a16 <= 5) && !(a20 == 1))) || ((!(a7 == 1) && 5 <= a16) && a17 == 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((!(a7 == 1) && 5 <= a16) && a17 == 1) || ((a16 <= 5 && !(a20 == 1)) && a17 == 1)) || ((a7 == 1 && a8 <= 13) && a17 == 0)) || (((a7 == 1 && a16 <= 5) && a17 == 1) && a8 <= 13)) || ((a16 <= 5 && !(a20 == 1)) && a17 == 0)) || ((a7 == 1 && a21 == 1) && a20 == 1)) || ((a21 == 1 && a20 == 1) && a17 == 0)) || (((a8 < 15 && a21 == 1) && a20 == 1) && a17 == 1)) || ((a7 == 1 && a16 <= 5) && !(a20 == 1))) || ((!(a7 == 1) && 5 <= a16) && a17 == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.7s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 586 SDtfs, 792 SDslu, 55 SDs, 0 SdLazy, 2667 SolverSat, 611 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 418 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=997occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 710 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 225 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3030 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 222 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1382 NumberOfCodeBlocks, 1382 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1563 ConstructedInterpolants, 0 QuantifiedInterpolants, 772445 SizeOfPredicates, 1 NumberOfNonLiveVariables, 415 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 894/958 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...