./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label53.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label53.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/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 118bd5ad7c98f835d1156af44127e433408f620e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:30:19,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:30:19,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:30:20,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:30:20,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:30:20,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:30:20,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:30:20,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:30:20,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:30:20,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:30:20,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:30:20,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:30:20,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:30:20,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:30:20,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:30:20,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:30:20,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:30:20,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:30:20,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:30:20,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:30:20,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:30:20,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:30:20,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:30:20,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:30:20,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:30:20,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:30:20,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:30:20,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:30:20,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:30:20,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:30:20,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:30:20,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:30:20,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:30:20,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:30:20,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:30:20,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:30:20,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:30:20,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:30:20,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:30:20,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:30:20,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:30:20,085 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:30:20,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:30:20,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:30:20,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:30:20,113 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:30:20,113 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:30:20,114 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:30:20,114 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:30:20,114 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:30:20,114 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:30:20,114 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:30:20,115 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:30:20,115 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:30:20,115 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:30:20,115 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:30:20,115 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:30:20,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:30:20,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:30:20,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:30:20,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:30:20,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:30:20,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:30:20,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:30:20,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:30:20,118 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:30:20,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:30:20,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:30:20,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:30:20,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:30:20,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:30:20,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:30:20,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:30:20,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:30:20,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:30:20,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:30:20,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:30:20,120 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:30:20,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:30:20,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:30:20,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:30:20,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:30:20,121 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_a9351033-d547-4bac-9b31-cff6831f6909/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 118bd5ad7c98f835d1156af44127e433408f620e [2020-11-28 07:30:20,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:30:20,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:30:20,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:30:20,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:30:20,446 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:30:20,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label53.c [2020-11-28 07:30:20,547 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/data/06faf7054/8e2f597e26d94d488848273c076ecf0b/FLAG328eb9683 [2020-11-28 07:30:21,220 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:30:21,221 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/sv-benchmarks/c/eca-rers2012/Problem02_label53.c [2020-11-28 07:30:21,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/data/06faf7054/8e2f597e26d94d488848273c076ecf0b/FLAG328eb9683 [2020-11-28 07:30:21,476 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/data/06faf7054/8e2f597e26d94d488848273c076ecf0b [2020-11-28 07:30:21,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:30:21,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:30:21,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:21,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:30:21,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:30:21,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:21,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3140f211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21, skipping insertion in model container [2020-11-28 07:30:21,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:21,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:30:21,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:30:21,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:22,007 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:30:22,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:22,196 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:30:22,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:22 WrapperNode [2020-11-28 07:30:22,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:22,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:22,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:30:22,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:30:22,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:22" (1/1) ... [2020-11-28 07:30:22,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:22" (1/1) ... [2020-11-28 07:30:22,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:22,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:30:22,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:30:22,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:30:22,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:22" (1/1) ... [2020-11-28 07:30:22,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:22" (1/1) ... [2020-11-28 07:30:22,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:22" (1/1) ... [2020-11-28 07:30:22,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:22" (1/1) ... [2020-11-28 07:30:22,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:22" (1/1) ... [2020-11-28 07:30:22,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:22" (1/1) ... [2020-11-28 07:30:22,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:22" (1/1) ... [2020-11-28 07:30:22,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:30:22,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:30:22,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:30:22,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:30:22,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:30:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:30:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:30:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:30:22,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:30:25,078 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:30:25,079 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:30:25,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:25 BoogieIcfgContainer [2020-11-28 07:30:25,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:30:25,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:30:25,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:30:25,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:30:25,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:30:21" (1/3) ... [2020-11-28 07:30:25,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760c6e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:25, skipping insertion in model container [2020-11-28 07:30:25,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:22" (2/3) ... [2020-11-28 07:30:25,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760c6e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:25, skipping insertion in model container [2020-11-28 07:30:25,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:25" (3/3) ... [2020-11-28 07:30:25,093 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2020-11-28 07:30:25,104 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:30:25,109 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:30:25,121 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:30:25,148 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:30:25,148 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:30:25,149 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:30:25,149 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:30:25,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:30:25,149 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:30:25,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:30:25,149 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:30:25,169 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:30:25,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:30:25,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:25,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:25,180 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:25,192 INFO L82 PathProgramCache]: Analyzing trace with hash -216536560, now seen corresponding path program 1 times [2020-11-28 07:30:25,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:25,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158536063] [2020-11-28 07:30:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:25,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158536063] [2020-11-28 07:30:25,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:25,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:25,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698255719] [2020-11-28 07:30:25,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:25,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:25,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:25,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:25,650 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:30:26,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:26,463 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:30:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:26,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:30:26,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:26,488 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:30:26,493 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:30:26,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:26,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:30:26,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:30:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:30:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-11-28 07:30:26,579 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-11-28 07:30:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:26,580 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-11-28 07:30:26,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-11-28 07:30:26,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-28 07:30:26,586 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:26,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:26,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:30:26,587 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:26,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:26,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1992946749, now seen corresponding path program 1 times [2020-11-28 07:30:26,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:26,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419220964] [2020-11-28 07:30:26,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:26,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419220964] [2020-11-28 07:30:26,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:26,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:26,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013400398] [2020-11-28 07:30:26,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:26,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:26,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:26,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:26,681 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-11-28 07:30:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:27,228 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-11-28 07:30:27,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:27,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-28 07:30:27,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:27,231 INFO L225 Difference]: With dead ends: 485 [2020-11-28 07:30:27,232 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 07:30:27,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 07:30:27,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-28 07:30:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-28 07:30:27,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-11-28 07:30:27,254 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-11-28 07:30:27,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:27,254 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-11-28 07:30:27,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-11-28 07:30:27,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-28 07:30:27,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:27,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:27,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:30:27,259 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:27,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:27,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1654430434, now seen corresponding path program 1 times [2020-11-28 07:30:27,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:27,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163376053] [2020-11-28 07:30:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:27,384 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:27,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163376053] [2020-11-28 07:30:27,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126427616] [2020-11-28 07:30:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:27,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:30:27,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:30:27,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:30:27,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:30:27,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-28 07:30:27,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957780645] [2020-11-28 07:30:27,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:27,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:27,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:27,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:30:27,666 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-11-28 07:30:28,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:28,205 INFO L93 Difference]: Finished difference Result 805 states and 1271 transitions. [2020-11-28 07:30:28,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:28,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-28 07:30:28,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:28,210 INFO L225 Difference]: With dead ends: 805 [2020-11-28 07:30:28,210 INFO L226 Difference]: Without dead ends: 483 [2020-11-28 07:30:28,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:30:28,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-11-28 07:30:28,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-11-28 07:30:28,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-28 07:30:28,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 728 transitions. [2020-11-28 07:30:28,251 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 728 transitions. Word has length 89 [2020-11-28 07:30:28,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:28,252 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 728 transitions. [2020-11-28 07:30:28,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:28,252 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 728 transitions. [2020-11-28 07:30:28,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-28 07:30:28,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:28,264 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:28,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 07:30:28,465 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:28,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:28,466 INFO L82 PathProgramCache]: Analyzing trace with hash -562617078, now seen corresponding path program 1 times [2020-11-28 07:30:28,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:28,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898065043] [2020-11-28 07:30:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-28 07:30:28,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898065043] [2020-11-28 07:30:28,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173258400] [2020-11-28 07:30:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:28,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:30:28,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:30:28,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:30:28,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:30:28,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-11-28 07:30:28,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541462176] [2020-11-28 07:30:28,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:30:28,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:28,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:30:28,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:28,809 INFO L87 Difference]: Start difference. First operand 483 states and 728 transitions. Second operand 4 states. [2020-11-28 07:30:29,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:29,732 INFO L93 Difference]: Finished difference Result 1525 states and 2391 transitions. [2020-11-28 07:30:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:30:29,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-11-28 07:30:29,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:29,739 INFO L225 Difference]: With dead ends: 1525 [2020-11-28 07:30:29,741 INFO L226 Difference]: Without dead ends: 1043 [2020-11-28 07:30:29,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:29,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-11-28 07:30:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2020-11-28 07:30:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-11-28 07:30:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1569 transitions. [2020-11-28 07:30:29,808 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1569 transitions. Word has length 113 [2020-11-28 07:30:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:29,809 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1569 transitions. [2020-11-28 07:30:29,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:30:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1569 transitions. [2020-11-28 07:30:29,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-28 07:30:29,814 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:29,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:30,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:30,024 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:30,024 INFO L82 PathProgramCache]: Analyzing trace with hash 744117025, now seen corresponding path program 1 times [2020-11-28 07:30:30,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:30,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688038563] [2020-11-28 07:30:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:30,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688038563] [2020-11-28 07:30:30,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155612510] [2020-11-28 07:30:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:30,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:30:30,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:30:30,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:30:30,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:30:30,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-11-28 07:30:30,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383502675] [2020-11-28 07:30:30,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:30:30,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:30,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:30:30,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:30:30,438 INFO L87 Difference]: Start difference. First operand 1043 states and 1569 transitions. Second operand 4 states. [2020-11-28 07:30:31,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:31,255 INFO L93 Difference]: Finished difference Result 2565 states and 3858 transitions. [2020-11-28 07:30:31,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:30:31,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-11-28 07:30:31,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:31,267 INFO L225 Difference]: With dead ends: 2565 [2020-11-28 07:30:31,267 INFO L226 Difference]: Without dead ends: 1523 [2020-11-28 07:30:31,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:30:31,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2020-11-28 07:30:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1443. [2020-11-28 07:30:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-11-28 07:30:31,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2074 transitions. [2020-11-28 07:30:31,330 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2074 transitions. Word has length 113 [2020-11-28 07:30:31,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:31,332 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 2074 transitions. [2020-11-28 07:30:31,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:30:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2074 transitions. [2020-11-28 07:30:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-11-28 07:30:31,338 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:31,338 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-28 07:30:31,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:31,547 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:31,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:31,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1580851565, now seen corresponding path program 1 times [2020-11-28 07:30:31,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:31,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869660676] [2020-11-28 07:30:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:31,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869660676] [2020-11-28 07:30:31,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:31,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:30:31,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325004969] [2020-11-28 07:30:31,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:30:31,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:31,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:30:31,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:30:31,707 INFO L87 Difference]: Start difference. First operand 1443 states and 2074 transitions. Second operand 5 states. [2020-11-28 07:30:32,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:32,626 INFO L93 Difference]: Finished difference Result 3431 states and 4893 transitions. [2020-11-28 07:30:32,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:30:32,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-11-28 07:30:32,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:32,637 INFO L225 Difference]: With dead ends: 3431 [2020-11-28 07:30:32,637 INFO L226 Difference]: Without dead ends: 1823 [2020-11-28 07:30:32,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:30:32,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2020-11-28 07:30:32,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1683. [2020-11-28 07:30:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1683 states. [2020-11-28 07:30:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2204 transitions. [2020-11-28 07:30:32,712 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2204 transitions. Word has length 114 [2020-11-28 07:30:32,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:32,713 INFO L481 AbstractCegarLoop]: Abstraction has 1683 states and 2204 transitions. [2020-11-28 07:30:32,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:30:32,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2204 transitions. [2020-11-28 07:30:32,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-28 07:30:32,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:32,717 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:32,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:30:32,718 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:32,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:32,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2072064565, now seen corresponding path program 1 times [2020-11-28 07:30:32,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:32,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907934798] [2020-11-28 07:30:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:32,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907934798] [2020-11-28 07:30:32,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626903552] [2020-11-28 07:30:32,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:32,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:30:32,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-11-28 07:30:33,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-11-28 07:30:33,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:30:33,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 5 [2020-11-28 07:30:33,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082927235] [2020-11-28 07:30:33,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:33,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:33,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:33,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:33,100 INFO L87 Difference]: Start difference. First operand 1683 states and 2204 transitions. Second operand 3 states. [2020-11-28 07:30:33,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:33,614 INFO L93 Difference]: Finished difference Result 4565 states and 5962 transitions. [2020-11-28 07:30:33,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:33,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-11-28 07:30:33,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:33,632 INFO L225 Difference]: With dead ends: 4565 [2020-11-28 07:30:33,632 INFO L226 Difference]: Without dead ends: 2883 [2020-11-28 07:30:33,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:33,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-11-28 07:30:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 2723. [2020-11-28 07:30:33,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2723 states. [2020-11-28 07:30:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3447 transitions. [2020-11-28 07:30:33,713 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3447 transitions. Word has length 121 [2020-11-28 07:30:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:33,714 INFO L481 AbstractCegarLoop]: Abstraction has 2723 states and 3447 transitions. [2020-11-28 07:30:33,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3447 transitions. [2020-11-28 07:30:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-28 07:30:33,720 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:33,720 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:33,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:33,935 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:33,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:33,935 INFO L82 PathProgramCache]: Analyzing trace with hash 657993064, now seen corresponding path program 1 times [2020-11-28 07:30:33,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:33,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553004753] [2020-11-28 07:30:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-28 07:30:34,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553004753] [2020-11-28 07:30:34,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:34,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:30:34,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123259486] [2020-11-28 07:30:34,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:34,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:34,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:34,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:34,011 INFO L87 Difference]: Start difference. First operand 2723 states and 3447 transitions. Second operand 3 states. [2020-11-28 07:30:34,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:34,535 INFO L93 Difference]: Finished difference Result 5445 states and 6893 transitions. [2020-11-28 07:30:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:34,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-11-28 07:30:34,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:34,552 INFO L225 Difference]: With dead ends: 5445 [2020-11-28 07:30:34,553 INFO L226 Difference]: Without dead ends: 2723 [2020-11-28 07:30:34,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:34,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2020-11-28 07:30:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2563. [2020-11-28 07:30:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2563 states. [2020-11-28 07:30:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3135 transitions. [2020-11-28 07:30:34,626 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3135 transitions. Word has length 125 [2020-11-28 07:30:34,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:34,626 INFO L481 AbstractCegarLoop]: Abstraction has 2563 states and 3135 transitions. [2020-11-28 07:30:34,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3135 transitions. [2020-11-28 07:30:34,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-28 07:30:34,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:34,632 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:34,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:30:34,632 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:34,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:34,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1989617597, now seen corresponding path program 1 times [2020-11-28 07:30:34,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:34,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415264007] [2020-11-28 07:30:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:30:34,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415264007] [2020-11-28 07:30:34,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:34,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:30:34,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181049097] [2020-11-28 07:30:34,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:34,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:34,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:34,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:34,744 INFO L87 Difference]: Start difference. First operand 2563 states and 3135 transitions. Second operand 3 states. [2020-11-28 07:30:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:35,166 INFO L93 Difference]: Finished difference Result 5205 states and 6363 transitions. [2020-11-28 07:30:35,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:35,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-28 07:30:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:35,178 INFO L225 Difference]: With dead ends: 5205 [2020-11-28 07:30:35,178 INFO L226 Difference]: Without dead ends: 2483 [2020-11-28 07:30:35,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:35,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2020-11-28 07:30:35,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2483. [2020-11-28 07:30:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2483 states. [2020-11-28 07:30:35,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 2886 transitions. [2020-11-28 07:30:35,247 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 2886 transitions. Word has length 133 [2020-11-28 07:30:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:35,247 INFO L481 AbstractCegarLoop]: Abstraction has 2483 states and 2886 transitions. [2020-11-28 07:30:35,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 2886 transitions. [2020-11-28 07:30:35,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-11-28 07:30:35,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:35,253 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:35,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:30:35,254 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:35,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:35,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1086589064, now seen corresponding path program 1 times [2020-11-28 07:30:35,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:35,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588239205] [2020-11-28 07:30:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-11-28 07:30:35,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588239205] [2020-11-28 07:30:35,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522830228] [2020-11-28 07:30:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:35,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:30:35,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-11-28 07:30:35,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-11-28 07:30:35,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:30:35,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 5 [2020-11-28 07:30:35,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235277953] [2020-11-28 07:30:35,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:35,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:35,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:35,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:35,606 INFO L87 Difference]: Start difference. First operand 2483 states and 2886 transitions. Second operand 3 states. [2020-11-28 07:30:35,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:35,850 INFO L93 Difference]: Finished difference Result 4245 states and 4905 transitions. [2020-11-28 07:30:35,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:35,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-11-28 07:30:35,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:35,858 INFO L225 Difference]: With dead ends: 4245 [2020-11-28 07:30:35,858 INFO L226 Difference]: Without dead ends: 1763 [2020-11-28 07:30:35,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:35,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2020-11-28 07:30:35,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 963. [2020-11-28 07:30:35,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-11-28 07:30:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1087 transitions. [2020-11-28 07:30:35,892 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1087 transitions. Word has length 157 [2020-11-28 07:30:35,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:35,892 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1087 transitions. [2020-11-28 07:30:35,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1087 transitions. [2020-11-28 07:30:35,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-11-28 07:30:35,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:35,897 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:36,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:30:36,111 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:36,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:36,111 INFO L82 PathProgramCache]: Analyzing trace with hash -374614847, now seen corresponding path program 1 times [2020-11-28 07:30:36,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:36,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347250496] [2020-11-28 07:30:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:36,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347250496] [2020-11-28 07:30:36,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474578933] [2020-11-28 07:30:36,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:36,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:30:36,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-28 07:30:36,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-28 07:30:36,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:30:36,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:30:36,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392915480] [2020-11-28 07:30:36,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:36,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:36,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:36,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:36,634 INFO L87 Difference]: Start difference. First operand 963 states and 1087 transitions. Second operand 3 states. [2020-11-28 07:30:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:36,999 INFO L93 Difference]: Finished difference Result 1923 states and 2172 transitions. [2020-11-28 07:30:36,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:36,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2020-11-28 07:30:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:37,000 INFO L225 Difference]: With dead ends: 1923 [2020-11-28 07:30:37,000 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:30:37,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:30:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:30:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:30:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:30:37,003 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2020-11-28 07:30:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:37,003 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:30:37,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:30:37,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:30:37,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:37,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:30:37,525 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-11-28 07:30:37,728 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-11-28 07:30:37,730 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:30:37,730 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:30:37,730 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:30:37,730 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:30:37,731 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:30:37,731 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:30:37,731 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:30:37,731 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:30:37,731 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:30:37,731 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:30:37,731 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:30:37,731 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:30:37,731 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:30:37,732 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:30:37,732 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:30:37,732 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:30:37,732 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:30:37,732 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:30:37,732 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:30:37,732 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:30:37,732 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:30:37,732 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:30:37,732 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:30:37,732 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:30:37,733 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:30:37,733 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:30:37,733 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:30:37,733 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:30:37,733 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:30:37,733 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:30:37,733 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:30:37,733 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:30:37,733 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:30:37,733 INFO L274 CegarLoopResult]: For program point L592-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:30:37,733 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:30:37,734 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:30:37,734 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:30:37,734 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:30:37,734 INFO L274 CegarLoopResult]: For program point L595-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:30:37,734 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:30:37,734 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:30:37,734 INFO L274 CegarLoopResult]: For program point L596(line 596) no Hoare annotation was computed. [2020-11-28 07:30:37,734 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:30:37,734 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:30:37,734 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:30:37,735 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:30:37,735 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:30:37,735 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:30:37,735 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:30:37,735 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:30:37,735 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:30:37,735 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:30:37,735 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:30:37,735 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:30:37,735 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:30:37,735 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:30:37,736 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (< ~a28~0 11)) (.cse0 (<= 10 ~a28~0)) (.cse2 (= ~a25~0 0)) (.cse1 (= ~a19~0 1)) (.cse4 (<= ~a17~0 8)) (.cse5 (< ~a28~0 9))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse3 .cse4) (and .cse0 .cse1 .cse4) (and .cse2 .cse4 .cse5) (and (<= ~a28~0 9) (<= ~a17~0 7)) (and .cse1 (= ~a21~0 1) (= ~a17~0 8)) (and .cse4 (<= ~a28~0 7)) (and (<= ~a11~0 0) .cse1 .cse4 .cse5))) [2020-11-28 07:30:37,736 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:30:37,736 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:30:37,736 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:30:37,736 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:30:37,736 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:30:37,736 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:30:37,737 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:30:37,737 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:30:37,737 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:30:37,737 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:30:37,737 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:30:37,737 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (< ~a28~0 11)) (.cse0 (<= 10 ~a28~0)) (.cse2 (= ~a25~0 0)) (.cse1 (= ~a19~0 1)) (.cse4 (<= ~a17~0 8)) (.cse5 (< ~a28~0 9))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse3 .cse4) (and .cse0 .cse1 .cse4) (and .cse2 .cse4 .cse5) (and (<= ~a28~0 9) (<= ~a17~0 7)) (and .cse1 (= ~a21~0 1) (= ~a17~0 8)) (and .cse4 (<= ~a28~0 7)) (and (<= ~a11~0 0) .cse1 .cse4 .cse5))) [2020-11-28 07:30:37,737 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:30:37,737 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:30:37,737 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:30:37,737 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:30:37,738 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:30:37,738 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:30:37,738 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:30:37,738 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:30:37,738 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:30:37,738 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:30:37,738 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:30:37,738 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:30:37,738 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:30:37,738 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:30:37,738 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:30:37,739 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:30:37,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:30:37 BoogieIcfgContainer [2020-11-28 07:30:37,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:30:37,783 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:30:37,783 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:30:37,783 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:30:37,784 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:25" (3/4) ... [2020-11-28 07:30:37,787 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:30:37,821 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 112 nodes and edges [2020-11-28 07:30:37,824 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-11-28 07:30:37,826 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:30:37,828 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:30:38,000 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a9351033-d547-4bac-9b31-cff6831f6909/bin/utaipan/witness.graphml [2020-11-28 07:30:38,000 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:30:38,001 INFO L168 Benchmark]: Toolchain (without parser) took 16512.90 ms. Allocated memory was 81.8 MB in the beginning and 293.6 MB in the end (delta: 211.8 MB). Free memory was 50.4 MB in the beginning and 224.7 MB in the end (delta: -174.3 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:38,002 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory was 36.6 MB in the beginning and 36.6 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:38,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.77 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 50.4 MB in the beginning and 69.5 MB in the end (delta: -19.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:38,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.29 ms. Allocated memory is still 109.1 MB. Free memory was 69.3 MB in the beginning and 64.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:38,004 INFO L168 Benchmark]: Boogie Preprocessor took 119.24 ms. Allocated memory is still 109.1 MB. Free memory was 64.0 MB in the beginning and 59.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:38,004 INFO L168 Benchmark]: RCFGBuilder took 2660.48 ms. Allocated memory was 109.1 MB in the beginning and 138.4 MB in the end (delta: 29.4 MB). Free memory was 59.3 MB in the beginning and 78.0 MB in the end (delta: -18.7 MB). Peak memory consumption was 43.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:38,005 INFO L168 Benchmark]: TraceAbstraction took 12695.43 ms. Allocated memory was 138.4 MB in the beginning and 293.6 MB in the end (delta: 155.2 MB). Free memory was 78.0 MB in the beginning and 240.4 MB in the end (delta: -162.4 MB). Peak memory consumption was 146.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:38,005 INFO L168 Benchmark]: Witness Printer took 217.62 ms. Allocated memory is still 293.6 MB. Free memory was 240.4 MB in the beginning and 224.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:38,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory was 36.6 MB in the beginning and 36.6 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 704.77 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 50.4 MB in the beginning and 69.5 MB in the end (delta: -19.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.29 ms. Allocated memory is still 109.1 MB. Free memory was 69.3 MB in the beginning and 64.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 119.24 ms. Allocated memory is still 109.1 MB. Free memory was 64.0 MB in the beginning and 59.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2660.48 ms. Allocated memory was 109.1 MB in the beginning and 138.4 MB in the end (delta: 29.4 MB). Free memory was 59.3 MB in the beginning and 78.0 MB in the end (delta: -18.7 MB). Peak memory consumption was 43.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12695.43 ms. Allocated memory was 138.4 MB in the beginning and 293.6 MB in the end (delta: 155.2 MB). Free memory was 78.0 MB in the beginning and 240.4 MB in the end (delta: -162.4 MB). Peak memory consumption was 146.9 MB. Max. memory is 16.1 GB. * Witness Printer took 217.62 ms. Allocated memory is still 293.6 MB. Free memory was 240.4 MB in the beginning and 224.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((10 <= a28 && a19 == 1) && a25 == 0) && a28 < 11) || ((10 <= a28 && a28 < 11) && a17 <= 8)) || ((10 <= a28 && a19 == 1) && a17 <= 8)) || ((a25 == 0 && a17 <= 8) && a28 < 9)) || (a28 <= 9 && a17 <= 7)) || ((a19 == 1 && a21 == 1) && a17 == 8)) || (a17 <= 8 && a28 <= 7)) || (((a11 <= 0 && a19 == 1) && a17 <= 8) && a28 < 9) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((10 <= a28 && a19 == 1) && a25 == 0) && a28 < 11) || ((10 <= a28 && a28 < 11) && a17 <= 8)) || ((10 <= a28 && a19 == 1) && a17 <= 8)) || ((a25 == 0 && a17 <= 8) && a28 < 9)) || (a28 <= 9 && a17 <= 7)) || ((a19 == 1 && a21 == 1) && a17 == 8)) || (a17 <= 8 && a28 <= 7)) || (((a11 <= 0 && a19 == 1) && a17 <= 8) && a28 < 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.0s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 732 SDtfs, 767 SDslu, 76 SDs, 0 SdLazy, 3095 SolverSat, 802 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1568 GetRequests, 1532 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2723occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 1340 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 163 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2144 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 374 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 2078 NumberOfCodeBlocks, 2078 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2826 ConstructedInterpolants, 0 QuantifiedInterpolants, 1152311 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2022 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 23 InterpolantComputations, 17 PerfectInterpolantSequences, 1363/1451 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...