./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label05.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_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label05.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/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 57986f5df1647173a809f7445e253a7d11975932 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:07:42,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:07:42,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:07:43,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:07:43,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:07:43,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:07:43,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:07:43,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:07:43,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:07:43,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:07:43,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:07:43,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:07:43,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:07:43,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:07:43,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:07:43,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:07:43,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:07:43,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:07:43,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:07:43,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:07:43,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:07:43,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:07:43,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:07:43,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:07:43,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:07:43,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:07:43,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:07:43,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:07:43,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:07:43,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:07:43,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:07:43,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:07:43,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:07:43,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:07:43,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:07:43,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:07:43,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:07:43,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:07:43,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:07:43,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:07:43,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:07:43,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:07:43,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:07:43,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:07:43,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:07:43,148 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:07:43,148 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:07:43,149 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:07:43,149 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:07:43,149 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:07:43,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:07:43,150 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:07:43,151 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:07:43,151 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:07:43,152 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:07:43,152 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:07:43,152 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:07:43,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:07:43,154 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:07:43,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:07:43,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:07:43,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:07:43,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:07:43,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:07:43,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:07:43,156 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:07:43,156 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:07:43,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:07:43,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:07:43,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:07:43,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:07:43,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:07:43,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:07:43,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:07:43,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:07:43,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:07:43,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:07:43,159 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:07:43,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:07:43,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:07:43,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:07:43,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:07:43,160 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_5a44b476-267d-470d-9b52-73fa84379217/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57986f5df1647173a809f7445e253a7d11975932 [2020-11-22 13:07:43,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:07:43,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:07:43,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:07:43,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:07:43,431 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:07:43,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label05.c [2020-11-22 13:07:43,513 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/data/e0a50efd9/fd07bcf13d72426eb2e2183aa009af82/FLAG6936af614 [2020-11-22 13:07:44,163 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:07:44,164 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/sv-benchmarks/c/eca-rers2012/Problem01_label05.c [2020-11-22 13:07:44,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/data/e0a50efd9/fd07bcf13d72426eb2e2183aa009af82/FLAG6936af614 [2020-11-22 13:07:44,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/data/e0a50efd9/fd07bcf13d72426eb2e2183aa009af82 [2020-11-22 13:07:44,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:07:44,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:07:44,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:44,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:07:44,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:07:44,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:44" (1/1) ... [2020-11-22 13:07:44,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0cd5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:44, skipping insertion in model container [2020-11-22 13:07:44,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:44" (1/1) ... [2020-11-22 13:07:44,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:07:44,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:07:45,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:45,012 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:07:45,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:45,144 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:07:45,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45 WrapperNode [2020-11-22 13:07:45,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:45,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:45,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:07:45,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:07:45,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:45,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:07:45,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:07:45,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:07:45,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:07:45,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:07:45,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:07:45,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:07:45,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:07:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:07:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:07:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:07:45,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:07:47,945 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:07:47,946 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:07:47,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:47 BoogieIcfgContainer [2020-11-22 13:07:47,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:07:47,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:07:47,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:07:47,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:07:47,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:07:44" (1/3) ... [2020-11-22 13:07:47,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1c9634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:47, skipping insertion in model container [2020-11-22 13:07:47,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (2/3) ... [2020-11-22 13:07:47,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1c9634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:47, skipping insertion in model container [2020-11-22 13:07:47,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:47" (3/3) ... [2020-11-22 13:07:47,957 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-11-22 13:07:47,968 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:07:47,972 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:07:47,984 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:07:48,017 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:07:48,018 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:07:48,018 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:07:48,018 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:07:48,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:07:48,023 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:07:48,023 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:07:48,023 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:07:48,042 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-22 13:07:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-22 13:07:48,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:48,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:48,058 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:48,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:48,065 INFO L82 PathProgramCache]: Analyzing trace with hash 2004381228, now seen corresponding path program 1 times [2020-11-22 13:07:48,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:48,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756635087] [2020-11-22 13:07:48,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:48,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756635087] [2020-11-22 13:07:48,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:48,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:07:48,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866798309] [2020-11-22 13:07:48,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:48,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:48,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:48,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:48,526 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-22 13:07:49,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:49,133 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-22 13:07:49,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:49,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-22 13:07:49,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:49,147 INFO L225 Difference]: With dead ends: 224 [2020-11-22 13:07:49,147 INFO L226 Difference]: Without dead ends: 145 [2020-11-22 13:07:49,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:49,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-22 13:07:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-22 13:07:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-22 13:07:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-11-22 13:07:49,197 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-11-22 13:07:49,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:49,198 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-11-22 13:07:49,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:49,198 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-11-22 13:07:49,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-22 13:07:49,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:49,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:49,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:07:49,202 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:49,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:49,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1988673087, now seen corresponding path program 1 times [2020-11-22 13:07:49,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:49,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796779797] [2020-11-22 13:07:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:49,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796779797] [2020-11-22 13:07:49,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:49,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:07:49,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199769884] [2020-11-22 13:07:49,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:49,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:49,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:49,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:49,286 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-11-22 13:07:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:49,804 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-11-22 13:07:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:49,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-22 13:07:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:49,807 INFO L225 Difference]: With dead ends: 431 [2020-11-22 13:07:49,807 INFO L226 Difference]: Without dead ends: 287 [2020-11-22 13:07:49,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:49,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-22 13:07:49,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-22 13:07:49,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-22 13:07:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2020-11-22 13:07:49,852 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2020-11-22 13:07:49,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:49,853 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2020-11-22 13:07:49,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2020-11-22 13:07:49,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-22 13:07:49,862 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:49,862 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:49,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:07:49,863 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:49,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:49,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2005730778, now seen corresponding path program 1 times [2020-11-22 13:07:49,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:49,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436157122] [2020-11-22 13:07:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:50,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436157122] [2020-11-22 13:07:50,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:50,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:07:50,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880070818] [2020-11-22 13:07:50,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:50,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:50,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:50,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:50,041 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2020-11-22 13:07:50,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:50,619 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2020-11-22 13:07:50,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:50,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-11-22 13:07:50,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:50,624 INFO L225 Difference]: With dead ends: 715 [2020-11-22 13:07:50,624 INFO L226 Difference]: Without dead ends: 429 [2020-11-22 13:07:50,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:50,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-22 13:07:50,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-11-22 13:07:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-22 13:07:50,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2020-11-22 13:07:50,656 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2020-11-22 13:07:50,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:50,657 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2020-11-22 13:07:50,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:50,657 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2020-11-22 13:07:50,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-22 13:07:50,664 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:50,664 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:50,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:07:50,665 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:50,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:50,670 INFO L82 PathProgramCache]: Analyzing trace with hash 38856612, now seen corresponding path program 1 times [2020-11-22 13:07:50,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:50,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572227512] [2020-11-22 13:07:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-22 13:07:50,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572227512] [2020-11-22 13:07:50,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:50,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:07:50,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628739022] [2020-11-22 13:07:50,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:50,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:50,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:50,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:50,756 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2020-11-22 13:07:51,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:51,173 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2020-11-22 13:07:51,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:51,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-11-22 13:07:51,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:51,177 INFO L225 Difference]: With dead ends: 999 [2020-11-22 13:07:51,177 INFO L226 Difference]: Without dead ends: 571 [2020-11-22 13:07:51,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:51,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-22 13:07:51,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2020-11-22 13:07:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-22 13:07:51,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2020-11-22 13:07:51,194 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2020-11-22 13:07:51,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:51,195 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2020-11-22 13:07:51,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2020-11-22 13:07:51,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-22 13:07:51,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:51,205 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:51,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:07:51,205 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:51,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:51,206 INFO L82 PathProgramCache]: Analyzing trace with hash 920135646, now seen corresponding path program 1 times [2020-11-22 13:07:51,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:51,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60039367] [2020-11-22 13:07:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-22 13:07:51,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60039367] [2020-11-22 13:07:51,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:51,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:07:51,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672476927] [2020-11-22 13:07:51,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:51,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:51,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:51,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:51,283 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 3 states. [2020-11-22 13:07:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:51,738 INFO L93 Difference]: Finished difference Result 1070 states and 1538 transitions. [2020-11-22 13:07:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:51,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-11-22 13:07:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:51,742 INFO L225 Difference]: With dead ends: 1070 [2020-11-22 13:07:51,742 INFO L226 Difference]: Without dead ends: 571 [2020-11-22 13:07:51,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:51,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-22 13:07:51,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-11-22 13:07:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-22 13:07:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 711 transitions. [2020-11-22 13:07:51,774 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 711 transitions. Word has length 113 [2020-11-22 13:07:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:51,775 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 711 transitions. [2020-11-22 13:07:51,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 711 transitions. [2020-11-22 13:07:51,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-22 13:07:51,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:51,779 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-11-22 13:07:51,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:07:51,780 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:51,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:51,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1460868266, now seen corresponding path program 1 times [2020-11-22 13:07:51,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:51,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902684475] [2020-11-22 13:07:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-22 13:07:51,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902684475] [2020-11-22 13:07:51,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:51,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:07:51,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769629081] [2020-11-22 13:07:51,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:51,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:51,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:51,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:51,878 INFO L87 Difference]: Start difference. First operand 571 states and 711 transitions. Second operand 3 states. [2020-11-22 13:07:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:52,273 INFO L93 Difference]: Finished difference Result 1496 states and 1860 transitions. [2020-11-22 13:07:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:52,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-11-22 13:07:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:52,285 INFO L225 Difference]: With dead ends: 1496 [2020-11-22 13:07:52,286 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 13:07:52,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 13:07:52,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 713. [2020-11-22 13:07:52,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-11-22 13:07:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 889 transitions. [2020-11-22 13:07:52,321 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 889 transitions. Word has length 122 [2020-11-22 13:07:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:52,321 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 889 transitions. [2020-11-22 13:07:52,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 889 transitions. [2020-11-22 13:07:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-11-22 13:07:52,329 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:52,329 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:52,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:07:52,329 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:52,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:52,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1698488802, now seen corresponding path program 1 times [2020-11-22 13:07:52,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:52,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55987082] [2020-11-22 13:07:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-22 13:07:52,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55987082] [2020-11-22 13:07:52,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:52,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:07:52,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633637065] [2020-11-22 13:07:52,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:52,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:52,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:52,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:52,458 INFO L87 Difference]: Start difference. First operand 713 states and 889 transitions. Second operand 3 states. [2020-11-22 13:07:52,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:52,816 INFO L93 Difference]: Finished difference Result 1567 states and 1960 transitions. [2020-11-22 13:07:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:52,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-11-22 13:07:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:52,822 INFO L225 Difference]: With dead ends: 1567 [2020-11-22 13:07:52,822 INFO L226 Difference]: Without dead ends: 855 [2020-11-22 13:07:52,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:52,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-22 13:07:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2020-11-22 13:07:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-22 13:07:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1056 transitions. [2020-11-22 13:07:52,852 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1056 transitions. Word has length 138 [2020-11-22 13:07:52,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:52,852 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1056 transitions. [2020-11-22 13:07:52,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:52,852 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1056 transitions. [2020-11-22 13:07:52,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-22 13:07:52,855 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:52,855 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:52,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:07:52,856 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:52,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:52,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1725636602, now seen corresponding path program 1 times [2020-11-22 13:07:52,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:52,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144456464] [2020-11-22 13:07:52,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-11-22 13:07:53,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144456464] [2020-11-22 13:07:53,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:53,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:07:53,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451341724] [2020-11-22 13:07:53,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:53,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:53,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:53,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:53,012 INFO L87 Difference]: Start difference. First operand 855 states and 1056 transitions. Second operand 4 states. [2020-11-22 13:07:53,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:53,569 INFO L93 Difference]: Finished difference Result 1851 states and 2308 transitions. [2020-11-22 13:07:53,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:53,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-11-22 13:07:53,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:53,575 INFO L225 Difference]: With dead ends: 1851 [2020-11-22 13:07:53,575 INFO L226 Difference]: Without dead ends: 997 [2020-11-22 13:07:53,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:53,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-22 13:07:53,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-11-22 13:07:53,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-22 13:07:53,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2020-11-22 13:07:53,600 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 154 [2020-11-22 13:07:53,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:53,600 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2020-11-22 13:07:53,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:53,601 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2020-11-22 13:07:53,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-22 13:07:53,604 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:53,604 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:53,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:07:53,606 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:53,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1286997425, now seen corresponding path program 1 times [2020-11-22 13:07:53,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:53,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938020858] [2020-11-22 13:07:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 124 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-22 13:07:53,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938020858] [2020-11-22 13:07:53,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209354632] [2020-11-22 13:07:53,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:07:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:53,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:07:53,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-22 13:07:54,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-22 13:07:54,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:07:54,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 13:07:54,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139306827] [2020-11-22 13:07:54,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:54,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:54,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:54,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:07:54,239 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2020-11-22 13:07:54,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:54,657 INFO L93 Difference]: Finished difference Result 1993 states and 2459 transitions. [2020-11-22 13:07:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:54,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-22 13:07:54,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:54,665 INFO L225 Difference]: With dead ends: 1993 [2020-11-22 13:07:54,665 INFO L226 Difference]: Without dead ends: 997 [2020-11-22 13:07:54,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:07:54,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-22 13:07:54,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2020-11-22 13:07:54,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-22 13:07:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1099 transitions. [2020-11-22 13:07:54,696 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1099 transitions. Word has length 171 [2020-11-22 13:07:54,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:54,697 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1099 transitions. [2020-11-22 13:07:54,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:54,698 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1099 transitions. [2020-11-22 13:07:54,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-11-22 13:07:54,701 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:54,702 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:54,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-22 13:07:54,919 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:54,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:54,919 INFO L82 PathProgramCache]: Analyzing trace with hash -361635998, now seen corresponding path program 1 times [2020-11-22 13:07:54,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:54,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174046143] [2020-11-22 13:07:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-22 13:07:55,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174046143] [2020-11-22 13:07:55,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360425965] [2020-11-22 13:07:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:07:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:55,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:07:55,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-22 13:07:55,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-22 13:07:55,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:07:55,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 13:07:55,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421263785] [2020-11-22 13:07:55,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:55,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:55,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:55,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:07:55,322 INFO L87 Difference]: Start difference. First operand 926 states and 1099 transitions. Second operand 3 states. [2020-11-22 13:07:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:55,848 INFO L93 Difference]: Finished difference Result 2135 states and 2557 transitions. [2020-11-22 13:07:55,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:55,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-11-22 13:07:55,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:55,856 INFO L225 Difference]: With dead ends: 2135 [2020-11-22 13:07:55,857 INFO L226 Difference]: Without dead ends: 1210 [2020-11-22 13:07:55,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:07:55,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-22 13:07:55,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2020-11-22 13:07:55,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-22 13:07:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1276 transitions. [2020-11-22 13:07:55,912 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1276 transitions. Word has length 177 [2020-11-22 13:07:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:55,913 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1276 transitions. [2020-11-22 13:07:55,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1276 transitions. [2020-11-22 13:07:55,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-11-22 13:07:55,917 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:55,917 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:56,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-22 13:07:56,143 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:56,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:56,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1794294458, now seen corresponding path program 1 times [2020-11-22 13:07:56,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:56,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557965104] [2020-11-22 13:07:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 165 proven. 6 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-11-22 13:07:56,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557965104] [2020-11-22 13:07:56,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636736952] [2020-11-22 13:07:56,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/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 [2020-11-22 13:07:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:56,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:07:56,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-22 13:07:56,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-22 13:07:56,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:07:56,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 13:07:56,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569888397] [2020-11-22 13:07:56,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:56,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:56,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:56,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:07:56,553 INFO L87 Difference]: Start difference. First operand 1068 states and 1276 transitions. Second operand 3 states. [2020-11-22 13:07:56,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:56,958 INFO L93 Difference]: Finished difference Result 2632 states and 3129 transitions. [2020-11-22 13:07:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:56,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2020-11-22 13:07:56,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:56,968 INFO L225 Difference]: With dead ends: 2632 [2020-11-22 13:07:56,968 INFO L226 Difference]: Without dead ends: 1565 [2020-11-22 13:07:56,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:07:56,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-11-22 13:07:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1494. [2020-11-22 13:07:56,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-11-22 13:07:57,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1753 transitions. [2020-11-22 13:07:57,003 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1753 transitions. Word has length 198 [2020-11-22 13:07:57,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:57,003 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1753 transitions. [2020-11-22 13:07:57,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:57,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1753 transitions. [2020-11-22 13:07:57,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-11-22 13:07:57,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:57,009 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:57,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-22 13:07:57,235 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:57,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:57,235 INFO L82 PathProgramCache]: Analyzing trace with hash -273338752, now seen corresponding path program 1 times [2020-11-22 13:07:57,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:57,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602066237] [2020-11-22 13:07:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 178 proven. 49 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-22 13:07:57,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602066237] [2020-11-22 13:07:57,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441768544] [2020-11-22 13:07:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/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 [2020-11-22 13:07:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:57,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:07:57,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-22 13:07:57,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-22 13:07:57,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:07:57,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-22 13:07:57,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467596415] [2020-11-22 13:07:57,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:57,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:57,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:57,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:07:57,831 INFO L87 Difference]: Start difference. First operand 1494 states and 1753 transitions. Second operand 3 states. [2020-11-22 13:07:58,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:58,224 INFO L93 Difference]: Finished difference Result 3271 states and 3842 transitions. [2020-11-22 13:07:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:58,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-11-22 13:07:58,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:58,236 INFO L225 Difference]: With dead ends: 3271 [2020-11-22 13:07:58,236 INFO L226 Difference]: Without dead ends: 1778 [2020-11-22 13:07:58,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 431 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:07:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-11-22 13:07:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1494. [2020-11-22 13:07:58,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-11-22 13:07:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1753 transitions. [2020-11-22 13:07:58,275 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1753 transitions. Word has length 217 [2020-11-22 13:07:58,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:58,276 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1753 transitions. [2020-11-22 13:07:58,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:58,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1753 transitions. [2020-11-22 13:07:58,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-11-22 13:07:58,281 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:58,281 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:58,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:07:58,495 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:58,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:58,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2072649142, now seen corresponding path program 1 times [2020-11-22 13:07:58,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:58,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554263924] [2020-11-22 13:07:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 202 proven. 6 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-22 13:07:58,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554263924] [2020-11-22 13:07:58,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499121558] [2020-11-22 13:07:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/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 [2020-11-22 13:07:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:58,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:07:58,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-11-22 13:07:58,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-11-22 13:07:58,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:07:58,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-11-22 13:07:58,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287184896] [2020-11-22 13:07:58,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:58,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:58,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:58,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:07:58,967 INFO L87 Difference]: Start difference. First operand 1494 states and 1753 transitions. Second operand 4 states. [2020-11-22 13:07:59,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:59,568 INFO L93 Difference]: Finished difference Result 2843 states and 3306 transitions. [2020-11-22 13:07:59,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:59,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2020-11-22 13:07:59,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:59,570 INFO L225 Difference]: With dead ends: 2843 [2020-11-22 13:07:59,570 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:07:59,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:07:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:07:59,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:07:59,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:07:59,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:07:59,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 229 [2020-11-22 13:07:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:59,573 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:07:59,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:59,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:07:59,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:07:59,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-22 13:07:59,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:08:00,116 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-11-22 13:08:00,304 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L468(line 468) no Hoare annotation was computed. [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-22 13:08:00,307 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-22 13:08:00,308 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-22 13:08:00,309 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-22 13:08:00,310 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse8 (= ~a20~0 1))) (let ((.cse7 (<= ~a7~0 0)) (.cse5 (<= ~a16~0 4)) (.cse4 (<= 15 ~a8~0)) (.cse3 (= ~a21~0 1)) (.cse0 (<= ~a16~0 5)) (.cse6 (<= ~a17~0 0)) (.cse9 (not .cse8)) (.cse1 (<= ~a21~0 0)) (.cse2 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2) (and .cse3 .cse5 .cse6 .cse7) (and .cse6 .cse8 .cse1) (and .cse3 .cse7 .cse8 .cse2) (and .cse5 .cse8 .cse2) (and .cse6 .cse9 .cse4) (and (<= 14 ~a8~0) .cse3 .cse6 .cse8) (and .cse0 .cse6 .cse9) (and .cse1 .cse8 .cse2)))) [2020-11-22 13:08:00,310 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-22 13:08:00,310 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-22 13:08:00,310 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-22 13:08:00,310 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-22 13:08:00,310 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-22 13:08:00,310 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-22 13:08:00,310 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-22 13:08:00,310 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:08:00,310 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-22 13:08:00,310 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-22 13:08:00,310 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-22 13:08:00,310 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-22 13:08:00,311 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-22 13:08:00,311 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-22 13:08:00,311 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-22 13:08:00,311 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-22 13:08:00,311 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-22 13:08:00,311 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-22 13:08:00,311 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-22 13:08:00,311 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-22 13:08:00,311 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-22 13:08:00,311 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-22 13:08:00,311 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-22 13:08:00,311 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse8 (= ~a20~0 1))) (let ((.cse7 (<= ~a7~0 0)) (.cse5 (<= ~a16~0 4)) (.cse4 (<= 15 ~a8~0)) (.cse3 (= ~a21~0 1)) (.cse0 (<= ~a16~0 5)) (.cse6 (<= ~a17~0 0)) (.cse9 (not .cse8)) (.cse1 (<= ~a21~0 0)) (.cse2 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2) (and .cse3 .cse5 .cse6 .cse7) (and .cse6 .cse8 .cse1) (and .cse3 .cse7 .cse8 .cse2) (and .cse5 .cse8 .cse2) (and .cse6 .cse9 .cse4) (and (<= 14 ~a8~0) .cse3 .cse6 .cse8) (and .cse0 .cse6 .cse9) (and .cse1 .cse8 .cse2)))) [2020-11-22 13:08:00,311 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-22 13:08:00,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:08:00,312 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-22 13:08:00,312 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-22 13:08:00,312 INFO L274 CegarLoopResult]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 13:08:00,312 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-22 13:08:00,312 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-22 13:08:00,312 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-22 13:08:00,312 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-22 13:08:00,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:08:00 BoogieIcfgContainer [2020-11-22 13:08:00,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:08:00,330 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:08:00,330 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:08:00,330 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:08:00,330 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:47" (3/4) ... [2020-11-22 13:08:00,333 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:08:00,353 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-22 13:08:00,354 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 13:08:00,356 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 13:08:00,358 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 13:08:00,518 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5a44b476-267d-470d-9b52-73fa84379217/bin/utaipan/witness.graphml [2020-11-22 13:08:00,519 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:08:00,520 INFO L168 Benchmark]: Toolchain (without parser) took 16094.37 ms. Allocated memory was 98.6 MB in the beginning and 450.9 MB in the end (delta: 352.3 MB). Free memory was 67.7 MB in the beginning and 409.4 MB in the end (delta: -341.7 MB). Peak memory consumption was 202.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:00,520 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:00,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.12 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 67.3 MB in the beginning and 89.8 MB in the end (delta: -22.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:00,521 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.19 ms. Allocated memory is still 130.0 MB. Free memory was 89.8 MB in the beginning and 83.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:00,522 INFO L168 Benchmark]: Boogie Preprocessor took 104.69 ms. Allocated memory is still 130.0 MB. Free memory was 83.5 MB in the beginning and 79.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:00,522 INFO L168 Benchmark]: RCFGBuilder took 2593.65 ms. Allocated memory is still 130.0 MB. Free memory was 79.3 MB in the beginning and 94.7 MB in the end (delta: -15.4 MB). Peak memory consumption was 58.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:00,522 INFO L168 Benchmark]: TraceAbstraction took 12380.06 ms. Allocated memory was 130.0 MB in the beginning and 337.6 MB in the end (delta: 207.6 MB). Free memory was 93.7 MB in the beginning and 116.4 MB in the end (delta: -22.7 MB). Peak memory consumption was 184.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:00,523 INFO L168 Benchmark]: Witness Printer took 188.97 ms. Allocated memory was 337.6 MB in the beginning and 450.9 MB in the end (delta: 113.2 MB). Free memory was 115.4 MB in the beginning and 409.4 MB in the end (delta: -294.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:00,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 715.12 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 67.3 MB in the beginning and 89.8 MB in the end (delta: -22.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.19 ms. Allocated memory is still 130.0 MB. Free memory was 89.8 MB in the beginning and 83.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.69 ms. Allocated memory is still 130.0 MB. Free memory was 83.5 MB in the beginning and 79.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2593.65 ms. Allocated memory is still 130.0 MB. Free memory was 79.3 MB in the beginning and 94.7 MB in the end (delta: -15.4 MB). Peak memory consumption was 58.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12380.06 ms. Allocated memory was 130.0 MB in the beginning and 337.6 MB in the end (delta: 207.6 MB). Free memory was 93.7 MB in the beginning and 116.4 MB in the end (delta: -22.7 MB). Peak memory consumption was 184.9 MB. Max. memory is 16.1 GB. * Witness Printer took 188.97 ms. Allocated memory was 337.6 MB in the beginning and 450.9 MB in the end (delta: 113.2 MB). Free memory was 115.4 MB in the beginning and 409.4 MB in the end (delta: -294.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a21 == 1 && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a16 <= 4) && a17 <= 0) && a7 <= 0)) || ((a17 <= 0 && a20 == 1) && a21 <= 0)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a17 <= 0 && !(a20 == 1)) && 15 <= a8)) || (((14 <= a8 && a21 == 1) && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 <= 0) && !(a20 == 1))) || ((a21 <= 0 && a20 == 1) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a21 == 1 && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a16 <= 4) && a17 <= 0) && a7 <= 0)) || ((a17 <= 0 && a20 == 1) && a21 <= 0)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a17 <= 0 && !(a20 == 1)) && 15 <= a8)) || (((14 <= a8 && a21 == 1) && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 <= 0) && !(a20 == 1))) || ((a21 <= 0 && a20 == 1) && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.7s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 544 SDtfs, 924 SDslu, 60 SDs, 0 SdLazy, 2965 SolverSat, 660 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2014 GetRequests, 1978 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1494occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 923 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 225 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1086 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 314 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2873 NumberOfCodeBlocks, 2873 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3842 ConstructedInterpolants, 0 QuantifiedInterpolants, 1519841 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2216 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 23 InterpolantComputations, 18 PerfectInterpolantSequences, 4115/4188 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...