./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/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 b121c0464c557212174d50c3c43859d1b7172e79 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:37:02,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:02,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:02,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:02,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:02,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:02,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:02,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:02,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:02,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:02,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:02,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:02,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:02,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:02,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:02,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:02,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:02,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:02,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:02,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:02,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:02,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:02,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:02,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:02,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:02,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:02,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:02,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:02,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:02,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:02,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:02,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:02,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:02,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:02,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:02,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:02,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:02,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:02,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:02,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:02,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:02,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:37:02,427 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:02,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:02,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:02,428 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:02,428 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:02,428 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:02,429 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:37:02,429 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:02,429 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:02,429 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:37:02,429 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:37:02,430 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:02,430 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:37:02,430 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:37:02,430 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:37:02,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:02,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:02,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:37:02,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:02,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:02,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:02,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:02,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:02,432 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:02,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:02,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:02,433 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:02,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:02,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:02,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:02,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:02,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:02,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:02,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:02,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:02,435 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:37:02,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:37:02,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:02,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:02,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:02,436 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_b8c1e5b9-8054-448d-afe5-9967cf9255cf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b121c0464c557212174d50c3c43859d1b7172e79 [2020-11-28 07:37:02,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:02,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:02,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:02,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:02,728 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:02,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2020-11-28 07:37:02,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/data/6ef56ecb9/68d22690d9ab481d8d291631d29427c1/FLAG5f5427b6d [2020-11-28 07:37:03,421 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:03,422 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2020-11-28 07:37:03,444 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/data/6ef56ecb9/68d22690d9ab481d8d291631d29427c1/FLAG5f5427b6d [2020-11-28 07:37:03,660 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/data/6ef56ecb9/68d22690d9ab481d8d291631d29427c1 [2020-11-28 07:37:03,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:03,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:03,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:03,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:03,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:03,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:03" (1/1) ... [2020-11-28 07:37:03,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a02ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:03, skipping insertion in model container [2020-11-28 07:37:03,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:03" (1/1) ... [2020-11-28 07:37:03,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:03,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:04,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:04,163 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:04,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:04,338 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:04,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:04 WrapperNode [2020-11-28 07:37:04,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:04,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:04,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:04,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:04,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:04" (1/1) ... [2020-11-28 07:37:04,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:04" (1/1) ... [2020-11-28 07:37:04,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:04,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:04,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:04,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:04,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:04" (1/1) ... [2020-11-28 07:37:04,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:04" (1/1) ... [2020-11-28 07:37:04,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:04" (1/1) ... [2020-11-28 07:37:04,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:04" (1/1) ... [2020-11-28 07:37:04,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:04" (1/1) ... [2020-11-28 07:37:04,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:04" (1/1) ... [2020-11-28 07:37:04,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:04" (1/1) ... [2020-11-28 07:37:04,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:04,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:04,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:04,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:04,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:04,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:37:04,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:04,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:04,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:06,992 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:06,993 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:37:06,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:06 BoogieIcfgContainer [2020-11-28 07:37:06,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:06,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:06,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:07,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:07,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:03" (1/3) ... [2020-11-28 07:37:07,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0c2754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:07, skipping insertion in model container [2020-11-28 07:37:07,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:04" (2/3) ... [2020-11-28 07:37:07,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0c2754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:07, skipping insertion in model container [2020-11-28 07:37:07,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:06" (3/3) ... [2020-11-28 07:37:07,005 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label23.c [2020-11-28 07:37:07,016 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:07,021 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:37:07,032 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:37:07,065 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:07,065 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:07,066 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:07,066 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:07,066 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:07,066 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:07,066 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:07,067 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:37:07,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:37:07,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:07,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:07,093 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:07,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:07,098 INFO L82 PathProgramCache]: Analyzing trace with hash 2004381484, now seen corresponding path program 1 times [2020-11-28 07:37:07,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:07,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017388351] [2020-11-28 07:37:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:07,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:07,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017388351] [2020-11-28 07:37:07,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:07,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:07,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446415888] [2020-11-28 07:37:07,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:07,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:07,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:07,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:07,538 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 07:37:08,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:08,122 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-28 07:37:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:08,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-28 07:37:08,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:08,144 INFO L225 Difference]: With dead ends: 224 [2020-11-28 07:37:08,144 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:37:08,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:08,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:37:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-28 07:37:08,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 07:37:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2020-11-28 07:37:08,222 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2020-11-28 07:37:08,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:08,224 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2020-11-28 07:37:08,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:08,224 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2020-11-28 07:37:08,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-28 07:37:08,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:08,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:08,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:37:08,230 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:08,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1988672831, now seen corresponding path program 1 times [2020-11-28 07:37:08,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:08,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941413121] [2020-11-28 07:37:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:08,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941413121] [2020-11-28 07:37:08,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:08,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:08,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702428062] [2020-11-28 07:37:08,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:08,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:08,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:08,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:08,338 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2020-11-28 07:37:08,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:08,859 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2020-11-28 07:37:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:08,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-28 07:37:08,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:08,862 INFO L225 Difference]: With dead ends: 431 [2020-11-28 07:37:08,862 INFO L226 Difference]: Without dead ends: 287 [2020-11-28 07:37:08,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:08,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-28 07:37:08,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-28 07:37:08,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 07:37:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2020-11-28 07:37:08,897 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2020-11-28 07:37:08,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:08,898 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2020-11-28 07:37:08,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2020-11-28 07:37:08,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-28 07:37:08,901 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:08,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:08,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:37:08,901 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:08,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:08,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2043357853, now seen corresponding path program 1 times [2020-11-28 07:37:08,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:08,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027493142] [2020-11-28 07:37:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:09,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027493142] [2020-11-28 07:37:09,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:09,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:09,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472350818] [2020-11-28 07:37:09,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:09,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:09,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:09,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:09,067 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand 3 states. [2020-11-28 07:37:09,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:09,660 INFO L93 Difference]: Finished difference Result 786 states and 1330 transitions. [2020-11-28 07:37:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:09,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-11-28 07:37:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:09,665 INFO L225 Difference]: With dead ends: 786 [2020-11-28 07:37:09,665 INFO L226 Difference]: Without dead ends: 500 [2020-11-28 07:37:09,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:09,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-28 07:37:09,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 358. [2020-11-28 07:37:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-28 07:37:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2020-11-28 07:37:09,715 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 78 [2020-11-28 07:37:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:09,716 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2020-11-28 07:37:09,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2020-11-28 07:37:09,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-28 07:37:09,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:09,720 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 07:37:09,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:37:09,720 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:09,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:09,721 INFO L82 PathProgramCache]: Analyzing trace with hash -117694642, now seen corresponding path program 1 times [2020-11-28 07:37:09,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:09,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696552715] [2020-11-28 07:37:09,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:09,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696552715] [2020-11-28 07:37:09,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:09,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:09,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519468121] [2020-11-28 07:37:09,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:09,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:09,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:09,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:09,799 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand 3 states. [2020-11-28 07:37:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:10,221 INFO L93 Difference]: Finished difference Result 1070 states and 1740 transitions. [2020-11-28 07:37:10,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:10,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-28 07:37:10,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:10,225 INFO L225 Difference]: With dead ends: 1070 [2020-11-28 07:37:10,225 INFO L226 Difference]: Without dead ends: 642 [2020-11-28 07:37:10,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:10,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-28 07:37:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2020-11-28 07:37:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-28 07:37:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 847 transitions. [2020-11-28 07:37:10,263 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 847 transitions. Word has length 84 [2020-11-28 07:37:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:10,263 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 847 transitions. [2020-11-28 07:37:10,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:10,263 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 847 transitions. [2020-11-28 07:37:10,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-28 07:37:10,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:10,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:10,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:37:10,266 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:10,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:10,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1196140380, now seen corresponding path program 1 times [2020-11-28 07:37:10,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:10,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262935991] [2020-11-28 07:37:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-28 07:37:10,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262935991] [2020-11-28 07:37:10,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:10,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:10,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718380005] [2020-11-28 07:37:10,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:10,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:10,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:10,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:10,379 INFO L87 Difference]: Start difference. First operand 642 states and 847 transitions. Second operand 3 states. [2020-11-28 07:37:10,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:10,813 INFO L93 Difference]: Finished difference Result 1496 states and 2001 transitions. [2020-11-28 07:37:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:10,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-11-28 07:37:10,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:10,819 INFO L225 Difference]: With dead ends: 1496 [2020-11-28 07:37:10,819 INFO L226 Difference]: Without dead ends: 926 [2020-11-28 07:37:10,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-28 07:37:10,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-11-28 07:37:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-28 07:37:10,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1036 transitions. [2020-11-28 07:37:10,848 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1036 transitions. Word has length 97 [2020-11-28 07:37:10,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:10,849 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1036 transitions. [2020-11-28 07:37:10,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:10,849 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1036 transitions. [2020-11-28 07:37:10,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-28 07:37:10,851 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:10,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:10,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:37:10,852 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:10,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:10,852 INFO L82 PathProgramCache]: Analyzing trace with hash 194398737, now seen corresponding path program 1 times [2020-11-28 07:37:10,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:10,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134608836] [2020-11-28 07:37:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:10,966 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-28 07:37:10,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134608836] [2020-11-28 07:37:10,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:10,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:10,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489240161] [2020-11-28 07:37:10,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:10,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:10,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:10,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:10,970 INFO L87 Difference]: Start difference. First operand 784 states and 1036 transitions. Second operand 3 states. [2020-11-28 07:37:11,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:11,349 INFO L93 Difference]: Finished difference Result 1567 states and 2086 transitions. [2020-11-28 07:37:11,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:11,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-11-28 07:37:11,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:11,354 INFO L225 Difference]: With dead ends: 1567 [2020-11-28 07:37:11,354 INFO L226 Difference]: Without dead ends: 855 [2020-11-28 07:37:11,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-28 07:37:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2020-11-28 07:37:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-28 07:37:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1115 transitions. [2020-11-28 07:37:11,381 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1115 transitions. Word has length 99 [2020-11-28 07:37:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:11,381 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1115 transitions. [2020-11-28 07:37:11,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1115 transitions. [2020-11-28 07:37:11,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-28 07:37:11,384 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:11,384 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1] [2020-11-28 07:37:11,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:37:11,384 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:11,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2060735797, now seen corresponding path program 1 times [2020-11-28 07:37:11,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:11,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33071805] [2020-11-28 07:37:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-28 07:37:11,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33071805] [2020-11-28 07:37:11,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489775041] [2020-11-28 07:37:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:11,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:37:11,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-28 07:37:11,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-28 07:37:11,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:37:11,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-28 07:37:11,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312412237] [2020-11-28 07:37:11,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:11,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:11,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:11,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:11,868 INFO L87 Difference]: Start difference. First operand 855 states and 1115 transitions. Second operand 3 states. [2020-11-28 07:37:12,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:12,381 INFO L93 Difference]: Finished difference Result 1922 states and 2581 transitions. [2020-11-28 07:37:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:12,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-28 07:37:12,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:12,391 INFO L225 Difference]: With dead ends: 1922 [2020-11-28 07:37:12,391 INFO L226 Difference]: Without dead ends: 1068 [2020-11-28 07:37:12,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:12,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-28 07:37:12,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 784. [2020-11-28 07:37:12,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-28 07:37:12,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1033 transitions. [2020-11-28 07:37:12,425 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1033 transitions. Word has length 103 [2020-11-28 07:37:12,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:12,427 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1033 transitions. [2020-11-28 07:37:12,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1033 transitions. [2020-11-28 07:37:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-28 07:37:12,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:12,429 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:12,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-28 07:37:12,652 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:12,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:12,653 INFO L82 PathProgramCache]: Analyzing trace with hash 137930668, now seen corresponding path program 1 times [2020-11-28 07:37:12,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:12,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123781041] [2020-11-28 07:37:12,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:12,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123781041] [2020-11-28 07:37:12,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:12,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:12,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432526238] [2020-11-28 07:37:12,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:37:12,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:12,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:37:12,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:12,778 INFO L87 Difference]: Start difference. First operand 784 states and 1033 transitions. Second operand 4 states. [2020-11-28 07:37:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:13,338 INFO L93 Difference]: Finished difference Result 1638 states and 2169 transitions. [2020-11-28 07:37:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:37:13,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-11-28 07:37:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:13,344 INFO L225 Difference]: With dead ends: 1638 [2020-11-28 07:37:13,344 INFO L226 Difference]: Without dead ends: 926 [2020-11-28 07:37:13,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:13,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-28 07:37:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2020-11-28 07:37:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-28 07:37:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1106 transitions. [2020-11-28 07:37:13,369 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1106 transitions. Word has length 104 [2020-11-28 07:37:13,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:13,369 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1106 transitions. [2020-11-28 07:37:13,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:37:13,370 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1106 transitions. [2020-11-28 07:37:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-28 07:37:13,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:13,375 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:13,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:37:13,377 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:13,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:13,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1613498644, now seen corresponding path program 1 times [2020-11-28 07:37:13,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:13,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387798089] [2020-11-28 07:37:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:13,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387798089] [2020-11-28 07:37:13,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:13,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:13,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735584247] [2020-11-28 07:37:13,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:13,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:13,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:13,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:13,498 INFO L87 Difference]: Start difference. First operand 855 states and 1106 transitions. Second operand 3 states. [2020-11-28 07:37:14,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:14,038 INFO L93 Difference]: Finished difference Result 1851 states and 2451 transitions. [2020-11-28 07:37:14,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:14,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-11-28 07:37:14,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:14,046 INFO L225 Difference]: With dead ends: 1851 [2020-11-28 07:37:14,048 INFO L226 Difference]: Without dead ends: 1068 [2020-11-28 07:37:14,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:14,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-28 07:37:14,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2020-11-28 07:37:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:37:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1321 transitions. [2020-11-28 07:37:14,083 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1321 transitions. Word has length 129 [2020-11-28 07:37:14,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:14,083 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1321 transitions. [2020-11-28 07:37:14,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1321 transitions. [2020-11-28 07:37:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-11-28 07:37:14,087 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:14,087 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:37:14,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:37:14,089 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:14,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1647795815, now seen corresponding path program 1 times [2020-11-28 07:37:14,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:14,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990091320] [2020-11-28 07:37:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 78 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-28 07:37:14,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990091320] [2020-11-28 07:37:14,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694668612] [2020-11-28 07:37:14,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:14,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:37:14,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-28 07:37:14,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-28 07:37:14,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:37:14,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-28 07:37:14,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380419090] [2020-11-28 07:37:14,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:14,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:14,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:14,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:14,455 INFO L87 Difference]: Start difference. First operand 1068 states and 1321 transitions. Second operand 3 states. [2020-11-28 07:37:14,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:14,836 INFO L93 Difference]: Finished difference Result 2204 states and 2734 transitions. [2020-11-28 07:37:14,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:14,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2020-11-28 07:37:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:14,837 INFO L225 Difference]: With dead ends: 2204 [2020-11-28 07:37:14,838 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:37:14,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:14,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:37:14,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:37:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:37:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:37:14,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 140 [2020-11-28 07:37:14,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:14,840 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:37:14,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:37:14,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:37:15,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:37:15,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:37:15,232 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2020-11-28 07:37:15,358 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2020-11-28 07:37:15,360 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:37:15,361 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L471(line 471) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:37:15,362 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:37:15,363 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:37:15,364 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1)) (.cse0 (not (= ~a7~0 1))) (.cse2 (<= ~a8~0 14)) (.cse4 (<= ~a16~0 5)) (.cse1 (<= ~a20~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse3 .cse0) (and .cse2 .cse4) (and .cse4 .cse1) (<= ~a8~0 13))) [2020-11-28 07:37:15,364 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:37:15,364 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:37:15,364 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:37:15,364 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:37:15,364 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:37:15,364 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:37:15,364 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:37:15,364 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:37:15,364 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:37:15,364 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:37:15,364 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:37:15,365 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1)) (.cse0 (not (= ~a7~0 1))) (.cse2 (<= ~a8~0 14)) (.cse4 (<= ~a16~0 5)) (.cse1 (<= ~a20~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse3 .cse0) (and .cse2 .cse4) (and .cse4 .cse1) (<= ~a8~0 13))) [2020-11-28 07:37:15,365 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:37:15,366 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:37:15,366 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:37:15,366 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:37:15,366 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:37:15,366 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:37:15,366 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:37:15,366 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:37:15,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:15 BoogieIcfgContainer [2020-11-28 07:37:15,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:15,385 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:15,386 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:15,387 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:15,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:06" (3/4) ... [2020-11-28 07:37:15,391 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:37:15,424 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-28 07:37:15,428 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:37:15,430 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:37:15,431 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:37:15,599 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b8c1e5b9-8054-448d-afe5-9967cf9255cf/bin/utaipan/witness.graphml [2020-11-28 07:37:15,599 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:15,600 INFO L168 Benchmark]: Toolchain (without parser) took 11935.76 ms. Allocated memory was 100.7 MB in the beginning and 230.7 MB in the end (delta: 130.0 MB). Free memory was 68.7 MB in the beginning and 76.7 MB in the end (delta: -8.0 MB). Peak memory consumption was 121.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:15,604 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory is still 36.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:15,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.38 ms. Allocated memory is still 100.7 MB. Free memory was 68.5 MB in the beginning and 61.4 MB in the end (delta: 7.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:15,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.93 ms. Allocated memory is still 100.7 MB. Free memory was 61.4 MB in the beginning and 55.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:15,605 INFO L168 Benchmark]: Boogie Preprocessor took 106.40 ms. Allocated memory is still 100.7 MB. Free memory was 55.6 MB in the beginning and 51.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:15,605 INFO L168 Benchmark]: RCFGBuilder took 2415.50 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 51.4 MB in the beginning and 89.6 MB in the end (delta: -38.2 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:15,606 INFO L168 Benchmark]: TraceAbstraction took 8388.34 ms. Allocated memory was 121.6 MB in the beginning and 230.7 MB in the end (delta: 109.1 MB). Free memory was 89.6 MB in the beginning and 91.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 106.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:15,606 INFO L168 Benchmark]: Witness Printer took 213.96 ms. Allocated memory is still 230.7 MB. Free memory was 91.4 MB in the beginning and 76.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:15,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory is still 36.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 674.38 ms. Allocated memory is still 100.7 MB. Free memory was 68.5 MB in the beginning and 61.4 MB in the end (delta: 7.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 129.93 ms. Allocated memory is still 100.7 MB. Free memory was 61.4 MB in the beginning and 55.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 106.40 ms. Allocated memory is still 100.7 MB. Free memory was 55.6 MB in the beginning and 51.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2415.50 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 51.4 MB in the beginning and 89.6 MB in the end (delta: -38.2 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8388.34 ms. Allocated memory was 121.6 MB in the beginning and 230.7 MB in the end (delta: 109.1 MB). Free memory was 89.6 MB in the beginning and 91.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 106.2 MB. Max. memory is 16.1 GB. * Witness Printer took 213.96 ms. Allocated memory is still 230.7 MB. Free memory was 91.4 MB in the beginning and 76.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((!(a7 == 1) && a20 <= 0) || (a8 <= 14 && a20 == 1)) || (a20 == 1 && !(a7 == 1))) || (a8 <= 14 && a16 <= 5)) || (a16 <= 5 && a20 <= 0)) || a8 <= 13 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((!(a7 == 1) && a20 <= 0) || (a8 <= 14 && a20 == 1)) || (a20 == 1 && !(a7 == 1))) || (a8 <= 14 && a16 <= 5)) || (a16 <= 5 && a20 <= 0)) || a8 <= 13 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.9s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 604 SDtfs, 578 SDslu, 40 SDs, 0 SdLazy, 2098 SolverSat, 488 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 508 GetRequests, 491 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 639 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 83 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1740 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 484 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1225 NumberOfCodeBlocks, 1225 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1454 ConstructedInterpolants, 0 QuantifiedInterpolants, 341751 SizeOfPredicates, 2 NumberOfNonLiveVariables, 643 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 678/691 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...