./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label01.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/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 052e3cb7fe168e14e27d9002bbcee163dc478f71 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:35:19,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:35:19,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:35:19,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:35:19,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:35:19,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:35:19,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:35:19,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:35:19,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:35:19,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:35:19,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:35:19,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:35:19,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:35:19,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:35:19,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:35:19,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:35:19,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:35:19,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:35:19,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:35:19,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:35:19,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:35:19,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:35:19,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:35:19,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:35:19,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:35:19,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:35:19,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:35:19,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:35:19,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:35:20,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:35:20,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:35:20,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:35:20,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:35:20,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:35:20,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:35:20,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:35:20,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:35:20,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:35:20,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:35:20,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:35:20,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:35:20,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:35:20,023 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:35:20,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:35:20,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:35:20,024 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:35:20,024 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:35:20,024 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:35:20,024 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:35:20,025 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:35:20,025 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:35:20,025 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:35:20,025 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:35:20,025 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:35:20,025 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:35:20,025 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:35:20,025 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:35:20,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:35:20,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:35:20,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:35:20,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:35:20,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:35:20,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:35:20,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:35:20,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:35:20,027 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:35:20,027 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:35:20,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:35:20,027 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:35:20,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:35:20,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:35:20,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:35:20,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:35:20,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:35:20,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:35:20,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:35:20,028 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:35:20,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:35:20,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:35:20,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:35:20,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:35:20,029 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_b391395b-f32d-4c9a-9f36-934d509c82fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052e3cb7fe168e14e27d9002bbcee163dc478f71 [2020-12-09 18:35:20,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:35:20,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:35:20,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:35:20,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:35:20,217 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:35:20,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label01.c [2020-12-09 18:35:20,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/data/becd61236/aefdb07471e54f1d994f35a8b9276f32/FLAG15665d2dc [2020-12-09 18:35:20,698 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:35:20,699 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/sv-benchmarks/c/eca-rers2012/Problem02_label01.c [2020-12-09 18:35:20,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/data/becd61236/aefdb07471e54f1d994f35a8b9276f32/FLAG15665d2dc [2020-12-09 18:35:20,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/data/becd61236/aefdb07471e54f1d994f35a8b9276f32 [2020-12-09 18:35:20,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:35:20,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:35:20,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:35:20,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:35:20,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:35:20,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:35:20" (1/1) ... [2020-12-09 18:35:20,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6eb082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:20, skipping insertion in model container [2020-12-09 18:35:20,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:35:20" (1/1) ... [2020-12-09 18:35:20,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:35:20,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:35:20,959 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/sv-benchmarks/c/eca-rers2012/Problem02_label01.c[18261,18274] [2020-12-09 18:35:20,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:35:20,983 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:35:21,050 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/sv-benchmarks/c/eca-rers2012/Problem02_label01.c[18261,18274] [2020-12-09 18:35:21,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:35:21,088 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:35:21,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:21 WrapperNode [2020-12-09 18:35:21,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:35:21,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:35:21,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:35:21,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:35:21,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:21" (1/1) ... [2020-12-09 18:35:21,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:21" (1/1) ... [2020-12-09 18:35:21,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:35:21,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:35:21,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:35:21,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:35:21,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:21" (1/1) ... [2020-12-09 18:35:21,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:21" (1/1) ... [2020-12-09 18:35:21,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:21" (1/1) ... [2020-12-09 18:35:21,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:21" (1/1) ... [2020-12-09 18:35:21,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:21" (1/1) ... [2020-12-09 18:35:21,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:21" (1/1) ... [2020-12-09 18:35:21,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:21" (1/1) ... [2020-12-09 18:35:21,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:35:21,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:35:21,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:35:21,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:35:21,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:35:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:35:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:35:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:35:21,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:35:22,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:35:22,467 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 18:35:22,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:22 BoogieIcfgContainer [2020-12-09 18:35:22,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:35:22,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:35:22,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:35:22,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:35:22,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:35:20" (1/3) ... [2020-12-09 18:35:22,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7114233a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:35:22, skipping insertion in model container [2020-12-09 18:35:22,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:21" (2/3) ... [2020-12-09 18:35:22,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7114233a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:35:22, skipping insertion in model container [2020-12-09 18:35:22,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:22" (3/3) ... [2020-12-09 18:35:22,477 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label01.c [2020-12-09 18:35:22,490 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:35:22,494 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:35:22,504 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:35:22,527 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:35:22,527 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:35:22,527 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:35:22,527 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:35:22,527 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:35:22,527 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:35:22,527 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:35:22,527 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:35:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 18:35:22,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 18:35:22,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:22,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:35:22,550 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:22,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:22,556 INFO L82 PathProgramCache]: Analyzing trace with hash 925956623, now seen corresponding path program 1 times [2020-12-09 18:35:22,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:22,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969118463] [2020-12-09 18:35:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:35:22,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969118463] [2020-12-09 18:35:22,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:35:22,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:35:22,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541685167] [2020-12-09 18:35:22,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:35:22,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:35:22,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:35:22,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:35:22,830 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 18:35:23,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:23,171 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 18:35:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:35:23,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 18:35:23,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:23,183 INFO L225 Difference]: With dead ends: 251 [2020-12-09 18:35:23,183 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 18:35:23,187 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 [2020-12-09 18:35:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 18:35:23,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 18:35:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 18:35:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-12-09 18:35:23,229 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-12-09 18:35:23,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:23,229 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-12-09 18:35:23,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:35:23,229 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-12-09 18:35:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 18:35:23,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:23,233 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:35:23,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:35:23,233 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:23,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:23,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1028677380, now seen corresponding path program 1 times [2020-12-09 18:35:23,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:23,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050412276] [2020-12-09 18:35:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:35:23,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050412276] [2020-12-09 18:35:23,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:35:23,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:35:23,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738175504] [2020-12-09 18:35:23,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:35:23,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:35:23,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:35:23,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:35:23,290 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-12-09 18:35:23,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:23,599 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-12-09 18:35:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:35:23,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 18:35:23,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:23,602 INFO L225 Difference]: With dead ends: 485 [2020-12-09 18:35:23,602 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 18:35:23,603 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 [2020-12-09 18:35:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 18:35:23,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 18:35:23,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 18:35:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 483 transitions. [2020-12-09 18:35:23,620 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 483 transitions. Word has length 84 [2020-12-09 18:35:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:23,620 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 483 transitions. [2020-12-09 18:35:23,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:35:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 483 transitions. [2020-12-09 18:35:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-09 18:35:23,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:23,623 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:35:23,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 18:35:23,623 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:23,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2137927261, now seen corresponding path program 1 times [2020-12-09 18:35:23,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:23,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902776306] [2020-12-09 18:35:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:35:23,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902776306] [2020-12-09 18:35:23,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370938420] [2020-12-09 18:35:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:35:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:23,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:35:23,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:35:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 18:35:23,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:35:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 18:35:23,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:35:23,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 18:35:23,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633690613] [2020-12-09 18:35:23,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:35:23,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:35:23,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:35:23,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:35:23,931 INFO L87 Difference]: Start difference. First operand 323 states and 483 transitions. Second operand 3 states. [2020-12-09 18:35:24,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:24,189 INFO L93 Difference]: Finished difference Result 565 states and 875 transitions. [2020-12-09 18:35:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:35:24,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-09 18:35:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:24,194 INFO L225 Difference]: With dead ends: 565 [2020-12-09 18:35:24,194 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 18:35:24,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:35:24,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 18:35:24,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2020-12-09 18:35:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 18:35:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 638 transitions. [2020-12-09 18:35:24,216 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 638 transitions. Word has length 89 [2020-12-09 18:35:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:24,217 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 638 transitions. [2020-12-09 18:35:24,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:35:24,217 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 638 transitions. [2020-12-09 18:35:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 18:35:24,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:24,219 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:35:24,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 18:35:24,421 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:24,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:24,421 INFO L82 PathProgramCache]: Analyzing trace with hash -2134426041, now seen corresponding path program 1 times [2020-12-09 18:35:24,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:24,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784996243] [2020-12-09 18:35:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:35:24,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784996243] [2020-12-09 18:35:24,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:35:24,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:35:24,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508605124] [2020-12-09 18:35:24,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:35:24,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:35:24,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:35:24,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:35:24,528 INFO L87 Difference]: Start difference. First operand 403 states and 638 transitions. Second operand 3 states. [2020-12-09 18:35:24,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:24,795 INFO L93 Difference]: Finished difference Result 1045 states and 1726 transitions. [2020-12-09 18:35:24,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:35:24,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 18:35:24,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:24,799 INFO L225 Difference]: With dead ends: 1045 [2020-12-09 18:35:24,799 INFO L226 Difference]: Without dead ends: 643 [2020-12-09 18:35:24,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:35:24,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-12-09 18:35:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-12-09 18:35:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 18:35:24,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1059 transitions. [2020-12-09 18:35:24,817 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1059 transitions. Word has length 103 [2020-12-09 18:35:24,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:24,817 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 1059 transitions. [2020-12-09 18:35:24,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:35:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1059 transitions. [2020-12-09 18:35:24,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 18:35:24,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:24,819 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:35:24,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 18:35:24,819 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:24,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:24,820 INFO L82 PathProgramCache]: Analyzing trace with hash -2118168559, now seen corresponding path program 1 times [2020-12-09 18:35:24,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:24,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088046125] [2020-12-09 18:35:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:35:24,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088046125] [2020-12-09 18:35:24,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956930197] [2020-12-09 18:35:24,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:35:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:25,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:35:25,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:35:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 18:35:25,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:35:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 18:35:25,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:35:25,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 18:35:25,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400905400] [2020-12-09 18:35:25,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:35:25,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:35:25,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:35:25,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:35:25,177 INFO L87 Difference]: Start difference. First operand 643 states and 1059 transitions. Second operand 3 states. [2020-12-09 18:35:25,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:25,452 INFO L93 Difference]: Finished difference Result 1765 states and 2989 transitions. [2020-12-09 18:35:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:35:25,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 18:35:25,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:25,458 INFO L225 Difference]: With dead ends: 1765 [2020-12-09 18:35:25,458 INFO L226 Difference]: Without dead ends: 1123 [2020-12-09 18:35:25,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:35:25,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-12-09 18:35:25,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 963. [2020-12-09 18:35:25,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-12-09 18:35:25,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1579 transitions. [2020-12-09 18:35:25,478 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1579 transitions. Word has length 107 [2020-12-09 18:35:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:25,479 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1579 transitions. [2020-12-09 18:35:25,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:35:25,479 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1579 transitions. [2020-12-09 18:35:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 18:35:25,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:25,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:35:25,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:35:25,682 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:25,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:25,682 INFO L82 PathProgramCache]: Analyzing trace with hash -440297637, now seen corresponding path program 1 times [2020-12-09 18:35:25,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:25,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077765799] [2020-12-09 18:35:25,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 18:35:25,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077765799] [2020-12-09 18:35:25,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:35:25,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:35:25,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643113762] [2020-12-09 18:35:25,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:35:25,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:35:25,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:35:25,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:35:25,736 INFO L87 Difference]: Start difference. First operand 963 states and 1579 transitions. Second operand 3 states. [2020-12-09 18:35:26,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:26,045 INFO L93 Difference]: Finished difference Result 2405 states and 3958 transitions. [2020-12-09 18:35:26,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:35:26,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-09 18:35:26,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:26,051 INFO L225 Difference]: With dead ends: 2405 [2020-12-09 18:35:26,051 INFO L226 Difference]: Without dead ends: 1443 [2020-12-09 18:35:26,052 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 [2020-12-09 18:35:26,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2020-12-09 18:35:26,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2020-12-09 18:35:26,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-12-09 18:35:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2140 transitions. [2020-12-09 18:35:26,078 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2140 transitions. Word has length 111 [2020-12-09 18:35:26,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:26,078 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 2140 transitions. [2020-12-09 18:35:26,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:35:26,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2140 transitions. [2020-12-09 18:35:26,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-09 18:35:26,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:26,080 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:35:26,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 18:35:26,081 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:26,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:26,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1534347196, now seen corresponding path program 1 times [2020-12-09 18:35:26,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:26,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915462079] [2020-12-09 18:35:26,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 18:35:26,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915462079] [2020-12-09 18:35:26,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:35:26,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:35:26,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202419973] [2020-12-09 18:35:26,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:35:26,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:35:26,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:35:26,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:35:26,125 INFO L87 Difference]: Start difference. First operand 1443 states and 2140 transitions. Second operand 3 states. [2020-12-09 18:35:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:26,405 INFO L93 Difference]: Finished difference Result 3445 states and 5129 transitions. [2020-12-09 18:35:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:35:26,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-12-09 18:35:26,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:26,413 INFO L225 Difference]: With dead ends: 3445 [2020-12-09 18:35:26,413 INFO L226 Difference]: Without dead ends: 1683 [2020-12-09 18:35:26,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:35:26,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2020-12-09 18:35:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1603. [2020-12-09 18:35:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1603 states. [2020-12-09 18:35:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 1988 transitions. [2020-12-09 18:35:26,453 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 1988 transitions. Word has length 133 [2020-12-09 18:35:26,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:26,454 INFO L481 AbstractCegarLoop]: Abstraction has 1603 states and 1988 transitions. [2020-12-09 18:35:26,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:35:26,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 1988 transitions. [2020-12-09 18:35:26,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-09 18:35:26,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:26,458 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:35:26,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 18:35:26,458 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:26,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:26,458 INFO L82 PathProgramCache]: Analyzing trace with hash 2089853139, now seen corresponding path program 1 times [2020-12-09 18:35:26,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:26,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186872261] [2020-12-09 18:35:26,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-09 18:35:26,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186872261] [2020-12-09 18:35:26,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940629092] [2020-12-09 18:35:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:35:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:26,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:35:26,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:35:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 18:35:26,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:35:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 18:35:26,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:35:26,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 18:35:26,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739665200] [2020-12-09 18:35:26,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:35:26,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:35:26,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:35:26,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:35:26,777 INFO L87 Difference]: Start difference. First operand 1603 states and 1988 transitions. Second operand 3 states. [2020-12-09 18:35:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:26,999 INFO L93 Difference]: Finished difference Result 3685 states and 4656 transitions. [2020-12-09 18:35:26,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:35:26,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-09 18:35:27,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:27,007 INFO L225 Difference]: With dead ends: 3685 [2020-12-09 18:35:27,007 INFO L226 Difference]: Without dead ends: 2083 [2020-12-09 18:35:27,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:35:27,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2020-12-09 18:35:27,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2003. [2020-12-09 18:35:27,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2003 states. [2020-12-09 18:35:27,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 2434 transitions. [2020-12-09 18:35:27,053 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 2434 transitions. Word has length 139 [2020-12-09 18:35:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:27,054 INFO L481 AbstractCegarLoop]: Abstraction has 2003 states and 2434 transitions. [2020-12-09 18:35:27,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:35:27,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 2434 transitions. [2020-12-09 18:35:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-09 18:35:27,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:27,057 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:35:27,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:35:27,259 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:27,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:27,260 INFO L82 PathProgramCache]: Analyzing trace with hash 867769731, now seen corresponding path program 1 times [2020-12-09 18:35:27,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:27,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404255073] [2020-12-09 18:35:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-09 18:35:27,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404255073] [2020-12-09 18:35:27,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465021624] [2020-12-09 18:35:27,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:35:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:27,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:35:27,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:35:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-12-09 18:35:27,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:35:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-12-09 18:35:27,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:35:27,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 18:35:27,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028869735] [2020-12-09 18:35:27,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:35:27,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:35:27,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:35:27,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:35:27,631 INFO L87 Difference]: Start difference. First operand 2003 states and 2434 transitions. Second operand 3 states. [2020-12-09 18:35:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:27,864 INFO L93 Difference]: Finished difference Result 4565 states and 5635 transitions. [2020-12-09 18:35:27,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:35:27,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-12-09 18:35:27,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:27,873 INFO L225 Difference]: With dead ends: 4565 [2020-12-09 18:35:27,873 INFO L226 Difference]: Without dead ends: 2563 [2020-12-09 18:35:27,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:35:27,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2020-12-09 18:35:27,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2163. [2020-12-09 18:35:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2163 states. [2020-12-09 18:35:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2627 transitions. [2020-12-09 18:35:27,915 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2627 transitions. Word has length 154 [2020-12-09 18:35:27,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:27,915 INFO L481 AbstractCegarLoop]: Abstraction has 2163 states and 2627 transitions. [2020-12-09 18:35:27,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:35:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2627 transitions. [2020-12-09 18:35:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-12-09 18:35:27,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:27,919 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:35:28,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:35:28,121 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:28,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:28,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1672963821, now seen corresponding path program 1 times [2020-12-09 18:35:28,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:28,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020403009] [2020-12-09 18:35:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 18:35:28,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020403009] [2020-12-09 18:35:28,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:35:28,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:35:28,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450478302] [2020-12-09 18:35:28,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:35:28,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:35:28,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:35:28,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:35:28,287 INFO L87 Difference]: Start difference. First operand 2163 states and 2627 transitions. Second operand 3 states. [2020-12-09 18:35:28,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:28,539 INFO L93 Difference]: Finished difference Result 5045 states and 6193 transitions. [2020-12-09 18:35:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:35:28,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2020-12-09 18:35:28,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:28,549 INFO L225 Difference]: With dead ends: 5045 [2020-12-09 18:35:28,549 INFO L226 Difference]: Without dead ends: 2883 [2020-12-09 18:35:28,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:35:28,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-12-09 18:35:28,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 2483. [2020-12-09 18:35:28,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2483 states. [2020-12-09 18:35:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 2962 transitions. [2020-12-09 18:35:28,582 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 2962 transitions. Word has length 190 [2020-12-09 18:35:28,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:28,583 INFO L481 AbstractCegarLoop]: Abstraction has 2483 states and 2962 transitions. [2020-12-09 18:35:28,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:35:28,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 2962 transitions. [2020-12-09 18:35:28,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-09 18:35:28,587 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:28,587 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:35:28,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 18:35:28,587 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:28,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:28,588 INFO L82 PathProgramCache]: Analyzing trace with hash 854205448, now seen corresponding path program 1 times [2020-12-09 18:35:28,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:28,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894734716] [2020-12-09 18:35:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-12-09 18:35:28,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894734716] [2020-12-09 18:35:28,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:35:28,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:35:28,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356053202] [2020-12-09 18:35:28,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:35:28,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:35:28,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:35:28,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:35:28,658 INFO L87 Difference]: Start difference. First operand 2483 states and 2962 transitions. Second operand 3 states. [2020-12-09 18:35:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:28,786 INFO L93 Difference]: Finished difference Result 4243 states and 5019 transitions. [2020-12-09 18:35:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:35:28,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-12-09 18:35:28,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:28,786 INFO L225 Difference]: With dead ends: 4243 [2020-12-09 18:35:28,786 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:35:28,788 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 [2020-12-09 18:35:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:35:28,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:35:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:35:28,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:35:28,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 233 [2020-12-09 18:35:28,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:28,789 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:35:28,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:35:28,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:35:28,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:35:28,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 18:35:28,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 18:35:29,018 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L517-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L520-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 18:35:29,019 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 521) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 18:35:29,020 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse5 (= ~a11~0 0)) (.cse1 (<= ~a28~0 7)) (.cse3 (<= 10 ~a28~0)) (.cse0 (= ~a19~0 1)) (.cse6 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 10))) (or (and (= ~a25~0 ~a11~0) .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4) (and .cse0 .cse5 .cse2) (and (or (and (<= ~a25~0 0) .cse4) (and .cse6 .cse1)) .cse2) (and (<= ~a19~0 0) .cse5 .cse1 .cse2) (and .cse0 .cse3 .cse2) (and .cse0 .cse6 .cse2) (and (<= 9 ~a28~0) .cse2 .cse4))) [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse5 (= ~a11~0 0)) (.cse1 (<= ~a28~0 7)) (.cse3 (<= 10 ~a28~0)) (.cse0 (= ~a19~0 1)) (.cse6 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 10))) (or (and (= ~a25~0 ~a11~0) .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4) (and .cse0 .cse5 .cse2) (and (or (and (<= ~a25~0 0) .cse4) (and .cse6 .cse1)) .cse2) (and (<= ~a19~0 0) .cse5 .cse1 .cse2) (and .cse0 .cse3 .cse2) (and .cse0 .cse6 .cse2) (and (<= 9 ~a28~0) .cse2 .cse4))) [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 18:35:29,021 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 18:35:29,022 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 18:35:29,022 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 18:35:29,022 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 18:35:29,022 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 18:35:29,022 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 18:35:29,022 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 18:35:29,022 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 18:35:29,022 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 18:35:29,022 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 18:35:29,022 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 18:35:29,022 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 18:35:29,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:35:29 BoogieIcfgContainer [2020-12-09 18:35:29,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:35:29,037 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:35:29,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:35:29,037 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:35:29,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:22" (3/4) ... [2020-12-09 18:35:29,040 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:35:29,063 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 18:35:29,064 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 18:35:29,066 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 18:35:29,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 18:35:29,174 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b391395b-f32d-4c9a-9f36-934d509c82fb/bin/utaipan/witness.graphml [2020-12-09 18:35:29,174 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:35:29,175 INFO L168 Benchmark]: Toolchain (without parser) took 8450.33 ms. Allocated memory was 104.9 MB in the beginning and 249.6 MB in the end (delta: 144.7 MB). Free memory was 73.7 MB in the beginning and 203.8 MB in the end (delta: -130.1 MB). Peak memory consumption was 94.9 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:29,176 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 69.2 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:35:29,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.37 ms. Allocated memory is still 104.9 MB. Free memory was 73.6 MB in the beginning and 80.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:29,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.18 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 75.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:29,176 INFO L168 Benchmark]: Boogie Preprocessor took 38.78 ms. Allocated memory is still 104.9 MB. Free memory was 75.2 MB in the beginning and 70.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:29,177 INFO L168 Benchmark]: RCFGBuilder took 1289.47 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 70.9 MB in the beginning and 99.4 MB in the end (delta: -28.5 MB). Peak memory consumption was 67.7 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:29,177 INFO L168 Benchmark]: TraceAbstraction took 6565.21 ms. Allocated memory was 142.6 MB in the beginning and 249.6 MB in the end (delta: 107.0 MB). Free memory was 99.4 MB in the beginning and 127.4 MB in the end (delta: -27.9 MB). Peak memory consumption was 79.0 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:29,177 INFO L168 Benchmark]: Witness Printer took 137.31 ms. Allocated memory is still 249.6 MB. Free memory was 127.4 MB in the beginning and 203.8 MB in the end (delta: -76.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:29,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 69.2 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 363.37 ms. Allocated memory is still 104.9 MB. Free memory was 73.6 MB in the beginning and 80.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.18 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 75.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.78 ms. Allocated memory is still 104.9 MB. Free memory was 75.2 MB in the beginning and 70.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1289.47 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 70.9 MB in the beginning and 99.4 MB in the end (delta: -28.5 MB). Peak memory consumption was 67.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6565.21 ms. Allocated memory was 142.6 MB in the beginning and 249.6 MB in the end (delta: 107.0 MB). Free memory was 99.4 MB in the beginning and 127.4 MB in the end (delta: -27.9 MB). Peak memory consumption was 79.0 MB. Max. memory is 16.1 GB. * Witness Printer took 137.31 ms. Allocated memory is still 249.6 MB. Free memory was 127.4 MB in the beginning and 203.8 MB in the end (delta: -76.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 521]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((a25 == a11 && a19 == 1) && a28 <= 7) && a17 <= 8) || ((a19 == 1 && 10 <= a28) && a28 <= 10)) || ((a19 == 1 && a11 == 0) && a17 <= 8)) || (((a25 <= 0 && a28 <= 10) || (8 <= a17 && a28 <= 7)) && a17 <= 8)) || (((a19 <= 0 && a11 == 0) && a28 <= 7) && a17 <= 8)) || ((a19 == 1 && 10 <= a28) && a17 <= 8)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((9 <= a28 && a17 <= 8) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((a25 == a11 && a19 == 1) && a28 <= 7) && a17 <= 8) || ((a19 == 1 && 10 <= a28) && a28 <= 10)) || ((a19 == 1 && a11 == 0) && a17 <= 8)) || (((a25 <= 0 && a28 <= 10) || (8 <= a17 && a28 <= 7)) && a17 <= 8)) || (((a19 <= 0 && a11 == 0) && a28 <= 7) && a17 <= 8)) || ((a19 == 1 && 10 <= a28) && a17 <= 8)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((9 <= a28 && a17 <= 8) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 642 SDtfs, 527 SDslu, 50 SDs, 0 SdLazy, 2471 SolverSat, 657 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1002 GetRequests, 976 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2483occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 1280 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 57 NumberOfFragments, 193 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1296 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 94 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1912 NumberOfCodeBlocks, 1912 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2382 ConstructedInterpolants, 0 QuantifiedInterpolants, 927496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1255 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 1405/1440 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...