./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label18.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/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 452c1d32baba8964bd2d48cf930cbca4ba96f1cc ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:47:28,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:47:28,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:47:28,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:47:28,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:47:28,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:47:28,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:47:28,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:47:28,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:47:28,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:47:28,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:47:28,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:47:28,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:47:28,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:47:28,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:47:28,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:47:28,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:47:28,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:47:28,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:47:28,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:47:28,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:47:28,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:47:28,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:47:28,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:47:29,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:47:29,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:47:29,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:47:29,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:47:29,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:47:29,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:47:29,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:47:29,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:47:29,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:47:29,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:47:29,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:47:29,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:47:29,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:47:29,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:47:29,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:47:29,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:47:29,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:47:29,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:47:29,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:47:29,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:47:29,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:47:29,032 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:47:29,033 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:47:29,033 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:47:29,033 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:47:29,033 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:47:29,033 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:47:29,034 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:47:29,034 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:47:29,034 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:47:29,034 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:47:29,034 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:47:29,034 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:47:29,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:47:29,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:47:29,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:47:29,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:47:29,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:47:29,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:47:29,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:47:29,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:47:29,036 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:47:29,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:47:29,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:47:29,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:47:29,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:47:29,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:47:29,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:47:29,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:47:29,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:47:29,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:47:29,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:47:29,038 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:47:29,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:47:29,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:47:29,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:47:29,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:47:29,038 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_9130ae37-891d-4477-9da9-ba3c76da34c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 452c1d32baba8964bd2d48cf930cbca4ba96f1cc [2020-12-09 06:47:29,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:47:29,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:47:29,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:47:29,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:47:29,239 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:47:29,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label18.c [2020-12-09 06:47:29,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/data/16d930dd7/31822a5933d542b1a1c0182f4a034b88/FLAG138248f66 [2020-12-09 06:47:29,721 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:47:29,722 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/sv-benchmarks/c/eca-rers2012/Problem01_label18.c [2020-12-09 06:47:29,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/data/16d930dd7/31822a5933d542b1a1c0182f4a034b88/FLAG138248f66 [2020-12-09 06:47:29,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/data/16d930dd7/31822a5933d542b1a1c0182f4a034b88 [2020-12-09 06:47:29,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:47:29,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:47:29,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:47:29,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:47:29,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:47:29,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:47:29" (1/1) ... [2020-12-09 06:47:29,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565e8e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:29, skipping insertion in model container [2020-12-09 06:47:29,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:47:29" (1/1) ... [2020-12-09 06:47:29,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:47:29,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:47:30,030 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/sv-benchmarks/c/eca-rers2012/Problem01_label18.c[17985,17998] [2020-12-09 06:47:30,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:47:30,059 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:47:30,112 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/sv-benchmarks/c/eca-rers2012/Problem01_label18.c[17985,17998] [2020-12-09 06:47:30,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:47:30,133 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:47:30,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:30 WrapperNode [2020-12-09 06:47:30,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:47:30,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:47:30,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:47:30,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:47:30,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:30" (1/1) ... [2020-12-09 06:47:30,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:30" (1/1) ... [2020-12-09 06:47:30,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:47:30,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:47:30,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:47:30,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:47:30,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:30" (1/1) ... [2020-12-09 06:47:30,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:30" (1/1) ... [2020-12-09 06:47:30,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:30" (1/1) ... [2020-12-09 06:47:30,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:30" (1/1) ... [2020-12-09 06:47:30,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:30" (1/1) ... [2020-12-09 06:47:30,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:30" (1/1) ... [2020-12-09 06:47:30,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:30" (1/1) ... [2020-12-09 06:47:30,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:47:30,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:47:30,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:47:30,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:47:30,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/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 [2020-12-09 06:47:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:47:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:47:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:47:30,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:47:31,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:47:31,618 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 06:47:31,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:47:31 BoogieIcfgContainer [2020-12-09 06:47:31,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:47:31,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:47:31,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:47:31,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:47:31,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:47:29" (1/3) ... [2020-12-09 06:47:31,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0b3231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:47:31, skipping insertion in model container [2020-12-09 06:47:31,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:47:30" (2/3) ... [2020-12-09 06:47:31,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0b3231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:47:31, skipping insertion in model container [2020-12-09 06:47:31,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:47:31" (3/3) ... [2020-12-09 06:47:31,626 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label18.c [2020-12-09 06:47:31,636 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:47:31,639 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 06:47:31,646 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 06:47:31,666 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:47:31,666 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:47:31,667 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:47:31,667 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:47:31,667 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:47:31,667 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:47:31,667 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:47:31,667 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:47:31,678 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 06:47:31,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 06:47:31,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:31,684 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] [2020-12-09 06:47:31,685 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:31,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:31,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1806912088, now seen corresponding path program 1 times [2020-12-09 06:47:31,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:31,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79310510] [2020-12-09 06:47:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:47:32,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79310510] [2020-12-09 06:47:32,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:47:32,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:47:32,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698213165] [2020-12-09 06:47:32,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:47:32,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:32,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:47:32,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:47:32,058 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-12-09 06:47:32,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:32,533 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2020-12-09 06:47:32,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:47:32,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-09 06:47:32,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:32,552 INFO L225 Difference]: With dead ends: 297 [2020-12-09 06:47:32,553 INFO L226 Difference]: Without dead ends: 216 [2020-12-09 06:47:32,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:47:32,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-12-09 06:47:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-12-09 06:47:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-09 06:47:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2020-12-09 06:47:32,603 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2020-12-09 06:47:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:32,604 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2020-12-09 06:47:32,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:47:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2020-12-09 06:47:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 06:47:32,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:32,608 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] [2020-12-09 06:47:32,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:47:32,609 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:32,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:32,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1703777223, now seen corresponding path program 1 times [2020-12-09 06:47:32,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:32,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561061456] [2020-12-09 06:47:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:47:32,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561061456] [2020-12-09 06:47:32,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:47:32,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:47:32,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118192110] [2020-12-09 06:47:32,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:47:32,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:32,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:47:32,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:47:32,786 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2020-12-09 06:47:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:33,186 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2020-12-09 06:47:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:47:33,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-09 06:47:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:33,189 INFO L225 Difference]: With dead ends: 500 [2020-12-09 06:47:33,189 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 06:47:33,191 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 [2020-12-09 06:47:33,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 06:47:33,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2020-12-09 06:47:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-09 06:47:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2020-12-09 06:47:33,204 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2020-12-09 06:47:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:33,205 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2020-12-09 06:47:33,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:47:33,205 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2020-12-09 06:47:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 06:47:33,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:33,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:47:33,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:47:33,208 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:33,209 INFO L82 PathProgramCache]: Analyzing trace with hash 350099319, now seen corresponding path program 1 times [2020-12-09 06:47:33,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:33,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174749283] [2020-12-09 06:47:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:47:33,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174749283] [2020-12-09 06:47:33,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:47:33,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:47:33,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238166815] [2020-12-09 06:47:33,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:47:33,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:33,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:47:33,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:47:33,282 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2020-12-09 06:47:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:33,610 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-12-09 06:47:33,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:47:33,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-12-09 06:47:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:33,613 INFO L225 Difference]: With dead ends: 573 [2020-12-09 06:47:33,613 INFO L226 Difference]: Without dead ends: 358 [2020-12-09 06:47:33,614 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 [2020-12-09 06:47:33,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-12-09 06:47:33,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-12-09 06:47:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-12-09 06:47:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2020-12-09 06:47:33,635 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 86 [2020-12-09 06:47:33,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:33,636 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2020-12-09 06:47:33,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:47:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2020-12-09 06:47:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-09 06:47:33,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:33,639 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:47:33,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:47:33,639 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:33,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:33,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1470705701, now seen corresponding path program 1 times [2020-12-09 06:47:33,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:33,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242294920] [2020-12-09 06:47:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 06:47:33,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242294920] [2020-12-09 06:47:33,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:47:33,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:47:33,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348182049] [2020-12-09 06:47:33,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:47:33,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:33,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:47:33,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:47:33,686 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand 3 states. [2020-12-09 06:47:33,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:33,897 INFO L93 Difference]: Finished difference Result 999 states and 1341 transitions. [2020-12-09 06:47:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:47:33,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-09 06:47:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:33,900 INFO L225 Difference]: With dead ends: 999 [2020-12-09 06:47:33,900 INFO L226 Difference]: Without dead ends: 642 [2020-12-09 06:47:33,901 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 [2020-12-09 06:47:33,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-12-09 06:47:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-12-09 06:47:33,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 06:47:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 780 transitions. [2020-12-09 06:47:33,915 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 780 transitions. Word has length 95 [2020-12-09 06:47:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:33,915 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 780 transitions. [2020-12-09 06:47:33,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:47:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 780 transitions. [2020-12-09 06:47:33,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-09 06:47:33,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:33,917 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:47:33,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 06:47:33,918 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:33,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:33,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1745912138, now seen corresponding path program 1 times [2020-12-09 06:47:33,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:33,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435392175] [2020-12-09 06:47:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:47:33,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435392175] [2020-12-09 06:47:33,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:47:33,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:47:33,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983060522] [2020-12-09 06:47:33,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:47:33,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:33,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:47:33,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:47:33,964 INFO L87 Difference]: Start difference. First operand 571 states and 780 transitions. Second operand 4 states. [2020-12-09 06:47:34,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:34,306 INFO L93 Difference]: Finished difference Result 1283 states and 1756 transitions. [2020-12-09 06:47:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:47:34,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-12-09 06:47:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:34,310 INFO L225 Difference]: With dead ends: 1283 [2020-12-09 06:47:34,311 INFO L226 Difference]: Without dead ends: 713 [2020-12-09 06:47:34,312 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 [2020-12-09 06:47:34,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-09 06:47:34,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2020-12-09 06:47:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-12-09 06:47:34,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 859 transitions. [2020-12-09 06:47:34,330 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 859 transitions. Word has length 101 [2020-12-09 06:47:34,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:34,330 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 859 transitions. [2020-12-09 06:47:34,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:47:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 859 transitions. [2020-12-09 06:47:34,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-09 06:47:34,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:34,333 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:47:34,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 06:47:34,333 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:34,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:34,334 INFO L82 PathProgramCache]: Analyzing trace with hash -656960691, now seen corresponding path program 1 times [2020-12-09 06:47:34,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:34,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820001955] [2020-12-09 06:47:34,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 06:47:34,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820001955] [2020-12-09 06:47:34,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:47:34,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:47:34,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725727194] [2020-12-09 06:47:34,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:47:34,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:34,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:47:34,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:47:34,408 INFO L87 Difference]: Start difference. First operand 642 states and 859 transitions. Second operand 4 states. [2020-12-09 06:47:34,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:34,773 INFO L93 Difference]: Finished difference Result 1496 states and 1980 transitions. [2020-12-09 06:47:34,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:47:34,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-12-09 06:47:34,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:34,777 INFO L225 Difference]: With dead ends: 1496 [2020-12-09 06:47:34,777 INFO L226 Difference]: Without dead ends: 855 [2020-12-09 06:47:34,778 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 [2020-12-09 06:47:34,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-12-09 06:47:34,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2020-12-09 06:47:34,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-12-09 06:47:34,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1024 transitions. [2020-12-09 06:47:34,792 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1024 transitions. Word has length 115 [2020-12-09 06:47:34,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:34,793 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1024 transitions. [2020-12-09 06:47:34,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:47:34,793 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1024 transitions. [2020-12-09 06:47:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-09 06:47:34,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:34,794 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:47:34,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 06:47:34,795 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:34,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:34,795 INFO L82 PathProgramCache]: Analyzing trace with hash 905966120, now seen corresponding path program 1 times [2020-12-09 06:47:34,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:34,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645794500] [2020-12-09 06:47:34,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 06:47:34,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645794500] [2020-12-09 06:47:34,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:47:34,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:47:34,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22779409] [2020-12-09 06:47:34,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:47:34,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:34,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:47:34,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:47:34,855 INFO L87 Difference]: Start difference. First operand 784 states and 1024 transitions. Second operand 3 states. [2020-12-09 06:47:35,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:35,114 INFO L93 Difference]: Finished difference Result 1709 states and 2200 transitions. [2020-12-09 06:47:35,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:47:35,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-09 06:47:35,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:35,120 INFO L225 Difference]: With dead ends: 1709 [2020-12-09 06:47:35,120 INFO L226 Difference]: Without dead ends: 926 [2020-12-09 06:47:35,122 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 [2020-12-09 06:47:35,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-12-09 06:47:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-12-09 06:47:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-12-09 06:47:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1018 transitions. [2020-12-09 06:47:35,148 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1018 transitions. Word has length 132 [2020-12-09 06:47:35,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:35,148 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1018 transitions. [2020-12-09 06:47:35,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:47:35,148 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1018 transitions. [2020-12-09 06:47:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-09 06:47:35,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:35,152 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:47:35,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 06:47:35,152 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:35,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1422762038, now seen corresponding path program 1 times [2020-12-09 06:47:35,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:35,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729761375] [2020-12-09 06:47:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-09 06:47:35,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729761375] [2020-12-09 06:47:35,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:47:35,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:47:35,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505675626] [2020-12-09 06:47:35,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:47:35,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:35,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:47:35,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:47:35,249 INFO L87 Difference]: Start difference. First operand 784 states and 1018 transitions. Second operand 3 states. [2020-12-09 06:47:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:35,488 INFO L93 Difference]: Finished difference Result 1709 states and 2188 transitions. [2020-12-09 06:47:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:47:35,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2020-12-09 06:47:35,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:35,492 INFO L225 Difference]: With dead ends: 1709 [2020-12-09 06:47:35,492 INFO L226 Difference]: Without dead ends: 926 [2020-12-09 06:47:35,493 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 [2020-12-09 06:47:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-12-09 06:47:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2020-12-09 06:47:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-12-09 06:47:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1057 transitions. [2020-12-09 06:47:35,507 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1057 transitions. Word has length 175 [2020-12-09 06:47:35,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:35,508 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1057 transitions. [2020-12-09 06:47:35,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:47:35,508 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1057 transitions. [2020-12-09 06:47:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-09 06:47:35,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:35,510 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:47:35,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 06:47:35,511 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:35,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:35,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1489444553, now seen corresponding path program 1 times [2020-12-09 06:47:35,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:35,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768572131] [2020-12-09 06:47:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 159 proven. 35 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-09 06:47:35,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768572131] [2020-12-09 06:47:35,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351611257] [2020-12-09 06:47:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/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 [2020-12-09 06:47:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:35,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:47:35,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:47:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-12-09 06:47:35,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:47:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-12-09 06:47:36,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 06:47:36,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-12-09 06:47:36,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878115261] [2020-12-09 06:47:36,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:47:36,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:36,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:47:36,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:47:36,119 INFO L87 Difference]: Start difference. First operand 855 states and 1057 transitions. Second operand 3 states. [2020-12-09 06:47:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:36,318 INFO L93 Difference]: Finished difference Result 1993 states and 2475 transitions. [2020-12-09 06:47:36,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:47:36,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2020-12-09 06:47:36,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:36,322 INFO L225 Difference]: With dead ends: 1993 [2020-12-09 06:47:36,323 INFO L226 Difference]: Without dead ends: 1139 [2020-12-09 06:47:36,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:47:36,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-12-09 06:47:36,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2020-12-09 06:47:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-09 06:47:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1256 transitions. [2020-12-09 06:47:36,340 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1256 transitions. Word has length 188 [2020-12-09 06:47:36,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:36,340 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1256 transitions. [2020-12-09 06:47:36,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:47:36,340 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1256 transitions. [2020-12-09 06:47:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-09 06:47:36,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:36,342 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:47:36,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-09 06:47:36,544 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:36,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:36,546 INFO L82 PathProgramCache]: Analyzing trace with hash 922663777, now seen corresponding path program 1 times [2020-12-09 06:47:36,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:36,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133603807] [2020-12-09 06:47:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-12-09 06:47:36,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133603807] [2020-12-09 06:47:36,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:47:36,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:47:36,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926436667] [2020-12-09 06:47:36,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:47:36,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:36,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:47:36,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:47:36,752 INFO L87 Difference]: Start difference. First operand 997 states and 1256 transitions. Second operand 3 states. [2020-12-09 06:47:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:36,960 INFO L93 Difference]: Finished difference Result 2206 states and 2847 transitions. [2020-12-09 06:47:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:47:36,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-12-09 06:47:36,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:36,965 INFO L225 Difference]: With dead ends: 2206 [2020-12-09 06:47:36,965 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 06:47:36,966 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 [2020-12-09 06:47:36,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 06:47:36,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2020-12-09 06:47:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 06:47:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1455 transitions. [2020-12-09 06:47:36,984 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1455 transitions. Word has length 197 [2020-12-09 06:47:36,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:36,985 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1455 transitions. [2020-12-09 06:47:36,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:47:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1455 transitions. [2020-12-09 06:47:36,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-09 06:47:36,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:36,988 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:47:36,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 06:47:36,988 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:36,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1501971387, now seen corresponding path program 1 times [2020-12-09 06:47:36,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:36,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685756705] [2020-12-09 06:47:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 175 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-09 06:47:37,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685756705] [2020-12-09 06:47:37,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115614423] [2020-12-09 06:47:37,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:47:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:37,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:47:37,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:47:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-12-09 06:47:37,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:47:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-12-09 06:47:37,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 06:47:37,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-12-09 06:47:37,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263201628] [2020-12-09 06:47:37,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:47:37,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:37,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:47:37,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:47:37,554 INFO L87 Difference]: Start difference. First operand 1139 states and 1455 transitions. Second operand 3 states. [2020-12-09 06:47:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:37,733 INFO L93 Difference]: Finished difference Result 2703 states and 3470 transitions. [2020-12-09 06:47:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:47:37,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2020-12-09 06:47:37,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:37,738 INFO L225 Difference]: With dead ends: 2703 [2020-12-09 06:47:37,738 INFO L226 Difference]: Without dead ends: 1565 [2020-12-09 06:47:37,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 424 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:47:37,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-12-09 06:47:37,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1281. [2020-12-09 06:47:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-12-09 06:47:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1646 transitions. [2020-12-09 06:47:37,770 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1646 transitions. Word has length 213 [2020-12-09 06:47:37,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:37,770 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1646 transitions. [2020-12-09 06:47:37,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:47:37,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1646 transitions. [2020-12-09 06:47:37,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-09 06:47:37,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:37,773 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:47:37,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:47:37,975 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:37,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:37,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1337022783, now seen corresponding path program 1 times [2020-12-09 06:47:37,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:37,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972594375] [2020-12-09 06:47:37,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 82 proven. 261 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-09 06:47:38,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972594375] [2020-12-09 06:47:38,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164827771] [2020-12-09 06:47:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:47:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:38,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:47:38,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:47:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-12-09 06:47:38,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:47:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-12-09 06:47:38,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 06:47:38,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2020-12-09 06:47:38,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619825630] [2020-12-09 06:47:38,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:47:38,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:38,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:47:38,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:47:38,616 INFO L87 Difference]: Start difference. First operand 1281 states and 1646 transitions. Second operand 3 states. [2020-12-09 06:47:38,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:38,825 INFO L93 Difference]: Finished difference Result 2845 states and 3638 transitions. [2020-12-09 06:47:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:47:38,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2020-12-09 06:47:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:38,830 INFO L225 Difference]: With dead ends: 2845 [2020-12-09 06:47:38,830 INFO L226 Difference]: Without dead ends: 1352 [2020-12-09 06:47:38,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:47:38,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-12-09 06:47:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1210. [2020-12-09 06:47:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 06:47:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1494 transitions. [2020-12-09 06:47:38,849 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1494 transitions. Word has length 242 [2020-12-09 06:47:38,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:38,849 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1494 transitions. [2020-12-09 06:47:38,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:47:38,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1494 transitions. [2020-12-09 06:47:38,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-12-09 06:47:38,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:47:38,852 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:47:39,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-09 06:47:39,052 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:47:39,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:47:39,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1841243056, now seen corresponding path program 1 times [2020-12-09 06:47:39,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:47:39,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732260674] [2020-12-09 06:47:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:47:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 182 proven. 103 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-12-09 06:47:39,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732260674] [2020-12-09 06:47:39,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296464056] [2020-12-09 06:47:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:47:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:47:39,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:47:39,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:47:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-12-09 06:47:39,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:47:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-12-09 06:47:39,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 06:47:39,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 06:47:39,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669446749] [2020-12-09 06:47:39,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:47:39,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:47:39,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:47:39,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:47:39,717 INFO L87 Difference]: Start difference. First operand 1210 states and 1494 transitions. Second operand 3 states. [2020-12-09 06:47:39,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:47:39,915 INFO L93 Difference]: Finished difference Result 2488 states and 3078 transitions. [2020-12-09 06:47:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:47:39,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2020-12-09 06:47:39,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:47:39,916 INFO L225 Difference]: With dead ends: 2488 [2020-12-09 06:47:39,916 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:47:39,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 508 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:47:39,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:47:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:47:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:47:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:47:39,918 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 255 [2020-12-09 06:47:39,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:47:39,918 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:47:39,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:47:39,918 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:47:39,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:47:40,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:47:40,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 06:47:40,400 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-12-09 06:47:40,531 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-12-09 06:47:40,533 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 06:47:40,533 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 06:47:40,533 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 06:47:40,534 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 06:47:40,535 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 06:47:40,536 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a16~0 6)) (.cse3 (<= 15 ~a8~0)) (.cse2 (not (= ~a7~0 1))) (.cse6 (= ~a17~0 1)) (.cse1 (<= ~a17~0 0)) (.cse4 (<= ~a16~0 5)) (.cse7 (= ~a20~0 1)) (.cse5 (<= ~a8~0 13))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse2 .cse5) (and .cse0 .cse2 .cse3 .cse6) (and .cse0 .cse1 .cse7 .cse5) (and .cse4 .cse2 .cse3 .cse6) (and .cse7 .cse2 .cse5) (and .cse1 .cse7 .cse2) (and (= ~a21~0 1) (= ~a12~0 8) .cse7 .cse2 .cse6) (and .cse4 .cse6 .cse5) (and .cse4 .cse1) (and .cse4 .cse7 .cse5))) [2020-12-09 06:47:40,536 INFO L262 CegarLoopResult]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 06:47:40,536 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 06:47:40,536 INFO L262 CegarLoopResult]: For program point L486(line 486) no Hoare annotation was computed. [2020-12-09 06:47:40,536 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 06:47:40,536 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 06:47:40,536 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 06:47:40,536 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 06:47:40,536 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 06:47:40,536 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 06:47:40,536 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 06:47:40,536 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 06:47:40,537 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a16~0 6)) (.cse3 (<= 15 ~a8~0)) (.cse2 (not (= ~a7~0 1))) (.cse6 (= ~a17~0 1)) (.cse1 (<= ~a17~0 0)) (.cse4 (<= ~a16~0 5)) (.cse7 (= ~a20~0 1)) (.cse5 (<= ~a8~0 13))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse2 .cse5) (and .cse0 .cse2 .cse3 .cse6) (and .cse0 .cse1 .cse7 .cse5) (and .cse4 .cse2 .cse3 .cse6) (and .cse7 .cse2 .cse5) (and .cse1 .cse7 .cse2) (and (= ~a21~0 1) (= ~a12~0 8) .cse7 .cse2 .cse6) (and .cse4 .cse6 .cse5) (and .cse4 .cse1) (and .cse4 .cse7 .cse5))) [2020-12-09 06:47:40,537 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 06:47:40,538 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 486) no Hoare annotation was computed. [2020-12-09 06:47:40,538 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 06:47:40,538 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 06:47:40,538 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 06:47:40,538 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 06:47:40,538 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 06:47:40,538 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 06:47:40,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:47:40 BoogieIcfgContainer [2020-12-09 06:47:40,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:47:40,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:47:40,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:47:40,552 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:47:40,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:47:31" (3/4) ... [2020-12-09 06:47:40,554 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 06:47:40,569 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-12-09 06:47:40,570 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-09 06:47:40,571 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-09 06:47:40,572 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 06:47:40,652 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9130ae37-891d-4477-9da9-ba3c76da34c9/bin/utaipan/witness.graphml [2020-12-09 06:47:40,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:47:40,653 INFO L168 Benchmark]: Toolchain (without parser) took 10903.41 ms. Allocated memory was 100.7 MB in the beginning and 358.6 MB in the end (delta: 257.9 MB). Free memory was 58.1 MB in the beginning and 187.5 MB in the end (delta: -129.4 MB). Peak memory consumption was 129.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:47:40,653 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 76.7 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:47:40,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.60 ms. Allocated memory is still 100.7 MB. Free memory was 58.0 MB in the beginning and 56.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:47:40,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.29 ms. Allocated memory is still 100.7 MB. Free memory was 56.7 MB in the beginning and 51.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:47:40,654 INFO L168 Benchmark]: Boogie Preprocessor took 44.23 ms. Allocated memory is still 100.7 MB. Free memory was 51.1 MB in the beginning and 46.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 06:47:40,654 INFO L168 Benchmark]: RCFGBuilder took 1385.97 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 46.5 MB in the beginning and 65.3 MB in the end (delta: -18.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:47:40,654 INFO L168 Benchmark]: TraceAbstraction took 8929.63 ms. Allocated memory was 138.4 MB in the beginning and 358.6 MB in the end (delta: 220.2 MB). Free memory was 65.1 MB in the beginning and 203.2 MB in the end (delta: -138.1 MB). Peak memory consumption was 83.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:47:40,655 INFO L168 Benchmark]: Witness Printer took 100.73 ms. Allocated memory is still 358.6 MB. Free memory was 203.2 MB in the beginning and 187.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:47:40,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 76.7 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 382.60 ms. Allocated memory is still 100.7 MB. Free memory was 58.0 MB in the beginning and 56.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.29 ms. Allocated memory is still 100.7 MB. Free memory was 56.7 MB in the beginning and 51.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.23 ms. Allocated memory is still 100.7 MB. Free memory was 51.1 MB in the beginning and 46.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1385.97 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 46.5 MB in the beginning and 65.3 MB in the end (delta: -18.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8929.63 ms. Allocated memory was 138.4 MB in the beginning and 358.6 MB in the end (delta: 220.2 MB). Free memory was 65.1 MB in the beginning and 203.2 MB in the end (delta: -138.1 MB). Peak memory consumption was 83.1 MB. Max. memory is 16.1 GB. * Witness Printer took 100.73 ms. Allocated memory is still 358.6 MB. Free memory was 203.2 MB in the beginning and 187.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 486]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((a16 == 6 && a17 <= 0) && !(a7 == 1)) && 15 <= a8) || ((a16 <= 5 && !(a7 == 1)) && a8 <= 13)) || (((a16 == 6 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || ((a20 == 1 && !(a7 == 1)) && a8 <= 13)) || ((a17 <= 0 && a20 == 1) && !(a7 == 1))) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0)) || ((a16 <= 5 && a20 == 1) && a8 <= 13) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((((a16 == 6 && a17 <= 0) && !(a7 == 1)) && 15 <= a8) || ((a16 <= 5 && !(a7 == 1)) && a8 <= 13)) || (((a16 == 6 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || ((a20 == 1 && !(a7 == 1)) && a8 <= 13)) || ((a17 <= 0 && a20 == 1) && !(a7 == 1))) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0)) || ((a16 <= 5 && a20 == 1) && a8 <= 13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.4s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 616 SDtfs, 999 SDslu, 71 SDs, 0 SdLazy, 3179 SolverSat, 774 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1839 GetRequests, 1801 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=11, 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, 13 MinimizatonAttempts, 1136 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 50 NumberOfFragments, 267 HoareAnnotationTreeSize, 3 FomulaSimplifications, 15862 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 398 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2846 NumberOfCodeBlocks, 2846 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 3723 ConstructedInterpolants, 0 QuantifiedInterpolants, 2905686 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1917 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 21 InterpolantComputations, 17 PerfectInterpolantSequences, 3886/4368 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...