./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label06.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/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 296b9a8bd43d1f84683291887dc52c74499fe706 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:01:47,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:01:47,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:01:47,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:01:47,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:01:47,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:01:47,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:01:47,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:01:47,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:01:47,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:01:47,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:01:47,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:01:47,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:01:47,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:01:47,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:01:47,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:01:47,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:01:47,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:01:47,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:01:47,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:01:47,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:01:47,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:01:47,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:01:47,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:01:47,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:01:47,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:01:47,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:01:47,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:01:47,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:01:47,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:01:47,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:01:47,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:01:47,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:01:47,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:01:47,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:01:47,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:01:47,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:01:47,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:01:47,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:01:47,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:01:47,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:01:47,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 14:01:47,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:01:47,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:01:47,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:01:47,521 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:01:47,521 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:01:47,521 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:01:47,522 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 14:01:47,522 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:01:47,522 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:01:47,522 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 14:01:47,522 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 14:01:47,522 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:01:47,522 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 14:01:47,523 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 14:01:47,523 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 14:01:47,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:01:47,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:01:47,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:01:47,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:01:47,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:01:47,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 14:01:47,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:01:47,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 14:01:47,524 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:01:47,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:01:47,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 14:01:47,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:01:47,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 14:01:47,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:01:47,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:01:47,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:01:47,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:01:47,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:01:47,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 14:01:47,526 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 14:01:47,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 14:01:47,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 14:01:47,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:01:47,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:01:47,527 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_f9bedf50-07f3-41a5-882d-08e002e1aeb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 296b9a8bd43d1f84683291887dc52c74499fe706 [2020-12-09 14:01:47,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:01:47,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:01:47,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:01:47,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:01:47,730 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:01:47,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label06.c [2020-12-09 14:01:47,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/data/32280e8d8/ffab8444a1c7479e95ab764b2af2862e/FLAG3f5ba8267 [2020-12-09 14:01:48,185 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:01:48,185 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/sv-benchmarks/c/eca-rers2012/Problem02_label06.c [2020-12-09 14:01:48,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/data/32280e8d8/ffab8444a1c7479e95ab764b2af2862e/FLAG3f5ba8267 [2020-12-09 14:01:48,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/data/32280e8d8/ffab8444a1c7479e95ab764b2af2862e [2020-12-09 14:01:48,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:01:48,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:01:48,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:01:48,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:01:48,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:01:48,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:01:48" (1/1) ... [2020-12-09 14:01:48,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6493fea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48, skipping insertion in model container [2020-12-09 14:01:48,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:01:48" (1/1) ... [2020-12-09 14:01:48,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:01:48,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:01:48,487 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/sv-benchmarks/c/eca-rers2012/Problem02_label06.c[21333,21346] [2020-12-09 14:01:48,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:01:48,504 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:01:48,558 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/sv-benchmarks/c/eca-rers2012/Problem02_label06.c[21333,21346] [2020-12-09 14:01:48,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:01:48,572 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:01:48,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48 WrapperNode [2020-12-09 14:01:48,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:01:48,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:01:48,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:01:48,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:01:48,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48" (1/1) ... [2020-12-09 14:01:48,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48" (1/1) ... [2020-12-09 14:01:48,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:01:48,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:01:48,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:01:48,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:01:48,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48" (1/1) ... [2020-12-09 14:01:48,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48" (1/1) ... [2020-12-09 14:01:48,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48" (1/1) ... [2020-12-09 14:01:48,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48" (1/1) ... [2020-12-09 14:01:48,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48" (1/1) ... [2020-12-09 14:01:48,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48" (1/1) ... [2020-12-09 14:01:48,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48" (1/1) ... [2020-12-09 14:01:48,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:01:48,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:01:48,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:01:48,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:01:48,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:01:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 14:01:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:01:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:01:48,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:01:49,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:01:49,930 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 14:01:49,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:01:49 BoogieIcfgContainer [2020-12-09 14:01:49,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:01:49,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:01:49,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:01:49,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:01:49,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:01:48" (1/3) ... [2020-12-09 14:01:49,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b9b7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:01:49, skipping insertion in model container [2020-12-09 14:01:49,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:01:48" (2/3) ... [2020-12-09 14:01:49,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b9b7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:01:49, skipping insertion in model container [2020-12-09 14:01:49,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:01:49" (3/3) ... [2020-12-09 14:01:49,938 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label06.c [2020-12-09 14:01:49,949 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:01:49,952 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 14:01:49,959 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 14:01:49,977 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:01:49,977 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 14:01:49,977 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:01:49,977 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:01:49,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:01:49,978 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:01:49,978 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:01:49,978 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:01:49,994 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 14:01:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 14:01:50,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:50,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:01:50,001 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:50,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:50,006 INFO L82 PathProgramCache]: Analyzing trace with hash 925963535, now seen corresponding path program 1 times [2020-12-09 14:01:50,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:50,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101278196] [2020-12-09 14:01:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:01:50,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101278196] [2020-12-09 14:01:50,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:01:50,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:01:50,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627414463] [2020-12-09 14:01:50,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:01:50,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:50,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:01:50,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:01:50,289 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 14:01:50,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:50,652 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 14:01:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:01:50,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 14:01:50,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:50,665 INFO L225 Difference]: With dead ends: 251 [2020-12-09 14:01:50,666 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 14:01:50,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:01:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 14:01:50,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 14:01:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 14:01:50,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-12-09 14:01:50,713 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-12-09 14:01:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:50,714 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-12-09 14:01:50,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:01:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-12-09 14:01:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 14:01:50,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:50,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:01:50,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 14:01:50,719 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:50,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1427733673, now seen corresponding path program 1 times [2020-12-09 14:01:50,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:50,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881381915] [2020-12-09 14:01:50,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:01:50,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881381915] [2020-12-09 14:01:50,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:01:50,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:01:50,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430737480] [2020-12-09 14:01:50,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:01:50,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:50,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:01:50,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:01:50,800 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-12-09 14:01:50,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:50,935 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-12-09 14:01:50,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:01:50,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 14:01:50,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:50,937 INFO L225 Difference]: With dead ends: 325 [2020-12-09 14:01:50,937 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 14:01:50,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:01:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 14:01:50,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 14:01:50,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 14:01:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-12-09 14:01:50,948 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-12-09 14:01:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:50,949 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-12-09 14:01:50,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:01:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-12-09 14:01:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 14:01:50,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:50,950 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:01:50,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 14:01:50,951 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:50,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:50,951 INFO L82 PathProgramCache]: Analyzing trace with hash 221764014, now seen corresponding path program 1 times [2020-12-09 14:01:50,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:50,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027218240] [2020-12-09 14:01:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:51,007 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:01:51,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027218240] [2020-12-09 14:01:51,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:01:51,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:01:51,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784018289] [2020-12-09 14:01:51,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:01:51,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:51,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:01:51,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:01:51,008 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-12-09 14:01:51,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:51,217 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2020-12-09 14:01:51,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:01:51,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 14:01:51,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:51,219 INFO L225 Difference]: With dead ends: 485 [2020-12-09 14:01:51,219 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 14:01:51,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:01:51,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 14:01:51,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-12-09 14:01:51,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-09 14:01:51,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-12-09 14:01:51,231 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2020-12-09 14:01:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:51,231 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-12-09 14:01:51,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:01:51,231 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-12-09 14:01:51,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 14:01:51,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:51,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:01:51,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 14:01:51,234 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:51,234 INFO L82 PathProgramCache]: Analyzing trace with hash -2134419129, now seen corresponding path program 1 times [2020-12-09 14:01:51,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:51,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953183910] [2020-12-09 14:01:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:01:51,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953183910] [2020-12-09 14:01:51,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:01:51,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:01:51,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321332791] [2020-12-09 14:01:51,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:01:51,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:51,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:01:51,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:01:51,277 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-12-09 14:01:51,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:51,476 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-12-09 14:01:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:01:51,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 14:01:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:51,478 INFO L225 Difference]: With dead ends: 565 [2020-12-09 14:01:51,478 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 14:01:51,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:01:51,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 14:01:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 14:01:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 14:01:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-12-09 14:01:51,488 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-12-09 14:01:51,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:51,488 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-12-09 14:01:51,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:01:51,488 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-12-09 14:01:51,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 14:01:51,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:51,490 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:01:51,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 14:01:51,491 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:51,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:51,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2118161647, now seen corresponding path program 1 times [2020-12-09 14:01:51,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:51,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402409480] [2020-12-09 14:01:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:01:51,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402409480] [2020-12-09 14:01:51,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111372949] [2020-12-09 14:01:51,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:01:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:51,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 14:01:51,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:01:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 14:01:51,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:01:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 14:01:51,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 14:01:51,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 14:01:51,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584091005] [2020-12-09 14:01:51,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:01:51,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:51,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:01:51,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:01:51,929 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-12-09 14:01:52,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:52,171 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2020-12-09 14:01:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:01:52,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 14:01:52,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:52,176 INFO L225 Difference]: With dead ends: 885 [2020-12-09 14:01:52,176 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 14:01:52,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:01:52,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 14:01:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2020-12-09 14:01:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 14:01:52,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 683 transitions. [2020-12-09 14:01:52,195 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 683 transitions. Word has length 107 [2020-12-09 14:01:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:52,196 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 683 transitions. [2020-12-09 14:01:52,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:01:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 683 transitions. [2020-12-09 14:01:52,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 14:01:52,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:52,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:01:52,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:01:52,400 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:52,401 INFO L82 PathProgramCache]: Analyzing trace with hash -440290725, now seen corresponding path program 1 times [2020-12-09 14:01:52,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:52,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090701914] [2020-12-09 14:01:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 14:01:52,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090701914] [2020-12-09 14:01:52,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:01:52,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:01:52,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965325809] [2020-12-09 14:01:52,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:01:52,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:52,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:01:52,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:01:52,479 INFO L87 Difference]: Start difference. First operand 483 states and 683 transitions. Second operand 3 states. [2020-12-09 14:01:52,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:52,748 INFO L93 Difference]: Finished difference Result 1205 states and 1716 transitions. [2020-12-09 14:01:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:01:52,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-09 14:01:52,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:52,752 INFO L225 Difference]: With dead ends: 1205 [2020-12-09 14:01:52,752 INFO L226 Difference]: Without dead ends: 723 [2020-12-09 14:01:52,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:01:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-09 14:01:52,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-12-09 14:01:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-09 14:01:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 954 transitions. [2020-12-09 14:01:52,767 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 954 transitions. Word has length 111 [2020-12-09 14:01:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:52,767 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 954 transitions. [2020-12-09 14:01:52,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:01:52,767 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 954 transitions. [2020-12-09 14:01:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-09 14:01:52,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:52,769 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:01:52,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 14:01:52,769 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:52,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:52,769 INFO L82 PathProgramCache]: Analyzing trace with hash -93006596, now seen corresponding path program 1 times [2020-12-09 14:01:52,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:52,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480750318] [2020-12-09 14:01:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 14:01:52,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480750318] [2020-12-09 14:01:52,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:01:52,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:01:52,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198786798] [2020-12-09 14:01:52,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:01:52,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:52,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:01:52,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:01:52,837 INFO L87 Difference]: Start difference. First operand 723 states and 954 transitions. Second operand 3 states. [2020-12-09 14:01:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:53,053 INFO L93 Difference]: Finished difference Result 1605 states and 2097 transitions. [2020-12-09 14:01:53,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:01:53,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-09 14:01:53,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:53,057 INFO L225 Difference]: With dead ends: 1605 [2020-12-09 14:01:53,057 INFO L226 Difference]: Without dead ends: 723 [2020-12-09 14:01:53,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:01:53,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-09 14:01:53,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2020-12-09 14:01:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 14:01:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 784 transitions. [2020-12-09 14:01:53,071 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 784 transitions. Word has length 171 [2020-12-09 14:01:53,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:53,072 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 784 transitions. [2020-12-09 14:01:53,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:01:53,072 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 784 transitions. [2020-12-09 14:01:53,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-09 14:01:53,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:53,074 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 14:01:53,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 14:01:53,074 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:53,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:53,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1493893397, now seen corresponding path program 1 times [2020-12-09 14:01:53,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:53,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767575850] [2020-12-09 14:01:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-12-09 14:01:53,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767575850] [2020-12-09 14:01:53,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074453176] [2020-12-09 14:01:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:01:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:53,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 14:01:53,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:01:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-12-09 14:01:53,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:01:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-12-09 14:01:53,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 14:01:53,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 14:01:53,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371473446] [2020-12-09 14:01:53,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:01:53,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:53,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:01:53,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:01:53,414 INFO L87 Difference]: Start difference. First operand 643 states and 784 transitions. Second operand 3 states. [2020-12-09 14:01:53,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:53,624 INFO L93 Difference]: Finished difference Result 1767 states and 2112 transitions. [2020-12-09 14:01:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:01:53,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-12-09 14:01:53,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:53,629 INFO L225 Difference]: With dead ends: 1767 [2020-12-09 14:01:53,629 INFO L226 Difference]: Without dead ends: 1125 [2020-12-09 14:01:53,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:01:53,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-12-09 14:01:53,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 963. [2020-12-09 14:01:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-12-09 14:01:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1143 transitions. [2020-12-09 14:01:53,650 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1143 transitions. Word has length 181 [2020-12-09 14:01:53,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:53,650 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1143 transitions. [2020-12-09 14:01:53,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:01:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1143 transitions. [2020-12-09 14:01:53,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-12-09 14:01:53,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:53,653 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:01:53,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:01:53,854 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:53,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:53,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1599236726, now seen corresponding path program 1 times [2020-12-09 14:01:53,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:53,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993505390] [2020-12-09 14:01:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-12-09 14:01:53,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993505390] [2020-12-09 14:01:53,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812071807] [2020-12-09 14:01:53,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:01:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:54,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 14:01:54,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:01:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-12-09 14:01:54,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:01:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-12-09 14:01:54,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 14:01:54,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 14:01:54,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836229500] [2020-12-09 14:01:54,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:01:54,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:54,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:01:54,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:01:54,233 INFO L87 Difference]: Start difference. First operand 963 states and 1143 transitions. Second operand 3 states. [2020-12-09 14:01:54,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:54,463 INFO L93 Difference]: Finished difference Result 2085 states and 2516 transitions. [2020-12-09 14:01:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:01:54,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-12-09 14:01:54,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:54,469 INFO L225 Difference]: With dead ends: 2085 [2020-12-09 14:01:54,469 INFO L226 Difference]: Without dead ends: 1203 [2020-12-09 14:01:54,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:01:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-12-09 14:01:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 963. [2020-12-09 14:01:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-12-09 14:01:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1149 transitions. [2020-12-09 14:01:54,493 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1149 transitions. Word has length 185 [2020-12-09 14:01:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:54,493 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1149 transitions. [2020-12-09 14:01:54,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:01:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1149 transitions. [2020-12-09 14:01:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-12-09 14:01:54,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:54,496 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:01:54,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:01:54,697 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:54,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:54,697 INFO L82 PathProgramCache]: Analyzing trace with hash 163376893, now seen corresponding path program 1 times [2020-12-09 14:01:54,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:54,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569546591] [2020-12-09 14:01:54,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-12-09 14:01:54,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569546591] [2020-12-09 14:01:54,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444452211] [2020-12-09 14:01:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:01:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:54,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 14:01:54,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:01:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-12-09 14:01:54,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:01:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-12-09 14:01:55,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 14:01:55,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 14:01:55,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712685326] [2020-12-09 14:01:55,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:01:55,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:55,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:01:55,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:01:55,103 INFO L87 Difference]: Start difference. First operand 963 states and 1149 transitions. Second operand 3 states. [2020-12-09 14:01:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:55,303 INFO L93 Difference]: Finished difference Result 2245 states and 2646 transitions. [2020-12-09 14:01:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:01:55,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-12-09 14:01:55,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:55,308 INFO L225 Difference]: With dead ends: 2245 [2020-12-09 14:01:55,308 INFO L226 Difference]: Without dead ends: 1123 [2020-12-09 14:01:55,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:01:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-12-09 14:01:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2020-12-09 14:01:55,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-12-09 14:01:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1287 transitions. [2020-12-09 14:01:55,336 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1287 transitions. Word has length 192 [2020-12-09 14:01:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:55,337 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1287 transitions. [2020-12-09 14:01:55,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:01:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1287 transitions. [2020-12-09 14:01:55,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-12-09 14:01:55,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:55,341 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 14:01:55,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:01:55,542 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:55,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:55,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1522106092, now seen corresponding path program 1 times [2020-12-09 14:01:55,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:55,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663429757] [2020-12-09 14:01:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:01:55,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663429757] [2020-12-09 14:01:55,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:01:55,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:01:55,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757624501] [2020-12-09 14:01:55,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:01:55,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:55,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:01:55,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:01:55,706 INFO L87 Difference]: Start difference. First operand 1123 states and 1287 transitions. Second operand 4 states. [2020-12-09 14:01:55,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:55,967 INFO L93 Difference]: Finished difference Result 2165 states and 2488 transitions. [2020-12-09 14:01:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:01:55,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2020-12-09 14:01:55,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:55,972 INFO L225 Difference]: With dead ends: 2165 [2020-12-09 14:01:55,972 INFO L226 Difference]: Without dead ends: 1123 [2020-12-09 14:01:55,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:01:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-12-09 14:01:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2020-12-09 14:01:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-12-09 14:01:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1283 transitions. [2020-12-09 14:01:55,990 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1283 transitions. Word has length 229 [2020-12-09 14:01:55,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:55,990 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1283 transitions. [2020-12-09 14:01:55,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:01:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1283 transitions. [2020-12-09 14:01:55,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-12-09 14:01:55,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:55,993 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:01:55,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 14:01:55,993 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1391709407, now seen corresponding path program 1 times [2020-12-09 14:01:55,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:55,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154947141] [2020-12-09 14:01:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-12-09 14:01:56,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154947141] [2020-12-09 14:01:56,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:01:56,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:01:56,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487036924] [2020-12-09 14:01:56,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:01:56,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:56,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:01:56,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:01:56,145 INFO L87 Difference]: Start difference. First operand 1123 states and 1283 transitions. Second operand 5 states. [2020-12-09 14:01:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:56,588 INFO L93 Difference]: Finished difference Result 2364 states and 2702 transitions. [2020-12-09 14:01:56,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 14:01:56,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-12-09 14:01:56,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:56,592 INFO L225 Difference]: With dead ends: 2364 [2020-12-09 14:01:56,592 INFO L226 Difference]: Without dead ends: 1076 [2020-12-09 14:01:56,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:01:56,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-12-09 14:01:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1043. [2020-12-09 14:01:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-12-09 14:01:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1117 transitions. [2020-12-09 14:01:56,611 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1117 transitions. Word has length 237 [2020-12-09 14:01:56,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:56,611 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1117 transitions. [2020-12-09 14:01:56,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:01:56,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1117 transitions. [2020-12-09 14:01:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-12-09 14:01:56,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:56,614 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:01:56,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 14:01:56,614 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:56,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:56,614 INFO L82 PathProgramCache]: Analyzing trace with hash 12925307, now seen corresponding path program 1 times [2020-12-09 14:01:56,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:56,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467309985] [2020-12-09 14:01:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-12-09 14:01:56,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467309985] [2020-12-09 14:01:56,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:01:56,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:01:56,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128233419] [2020-12-09 14:01:56,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:01:56,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:01:56,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:01:56,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:01:56,716 INFO L87 Difference]: Start difference. First operand 1043 states and 1117 transitions. Second operand 4 states. [2020-12-09 14:01:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:01:56,985 INFO L93 Difference]: Finished difference Result 2005 states and 2150 transitions. [2020-12-09 14:01:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:01:56,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2020-12-09 14:01:56,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:01:56,988 INFO L225 Difference]: With dead ends: 2005 [2020-12-09 14:01:56,988 INFO L226 Difference]: Without dead ends: 1043 [2020-12-09 14:01:56,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:01:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-12-09 14:01:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2020-12-09 14:01:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-12-09 14:01:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1115 transitions. [2020-12-09 14:01:57,005 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1115 transitions. Word has length 257 [2020-12-09 14:01:57,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:01:57,005 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1115 transitions. [2020-12-09 14:01:57,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:01:57,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1115 transitions. [2020-12-09 14:01:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-09 14:01:57,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:01:57,008 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:01:57,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 14:01:57,008 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:01:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:01:57,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1411847825, now seen corresponding path program 1 times [2020-12-09 14:01:57,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:01:57,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60918469] [2020-12-09 14:01:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:01:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 337 proven. 15 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-09 14:01:57,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60918469] [2020-12-09 14:01:57,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866436089] [2020-12-09 14:01:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:01:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:01:57,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 14:01:57,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:01:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 383 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:01:57,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:01:57,820 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 5, 6, 1] term [2020-12-09 14:01:57,820 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:01:57,823 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 14:01:57,823 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:01:57,933 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 1] term [2020-12-09 14:01:57,934 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:01:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 259 proven. 64 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-12-09 14:01:58,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [385162917] [2020-12-09 14:01:58,187 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-12-09 14:01:58,187 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 14:01:58,191 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 14:01:58,196 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 14:01:58,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 14:02:03,621 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 159 [2020-12-09 14:02:03,785 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-12-09 14:02:03,997 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-12-09 14:02:04,162 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-12-09 14:02:04,368 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-12-09 14:02:04,532 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-12-09 14:02:04,918 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2020-12-09 14:02:05,243 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-12-09 14:02:05,580 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-12-09 14:02:05,904 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-12-09 14:02:06,243 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-12-09 14:02:07,895 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 14:02:08,024 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 14:02:08,191 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 14:02:08,321 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 14:02:08,483 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 14:02:08,613 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 14:02:08,869 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 164 [2020-12-09 14:02:09,064 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-12-09 14:02:09,272 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-12-09 14:02:09,469 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-12-09 14:02:11,345 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 61 [2020-12-09 14:02:11,490 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 61 [2020-12-09 14:02:11,641 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 61 [2020-12-09 14:02:13,217 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 14:02:13,553 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-12-09 14:02:13,798 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-12-09 14:02:14,051 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-12-09 14:02:14,348 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 102 [2020-12-09 14:02:14,639 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-12-09 14:02:14,975 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-12-09 14:02:15,412 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2020-12-09 14:02:15,859 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-12-09 14:02:16,316 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2020-12-09 14:02:16,856 WARN L197 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-12-09 14:02:17,585 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-12-09 14:02:18,237 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-12-09 14:02:19,156 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2020-12-09 14:02:19,684 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2020-12-09 14:02:20,158 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2020-12-09 14:02:20,735 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2020-12-09 14:02:21,113 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2020-12-09 14:02:23,402 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2020-12-09 14:02:24,190 WARN L197 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2020-12-09 14:02:25,140 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2020-12-09 14:02:25,689 WARN L197 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-12-09 14:02:26,242 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2020-12-09 14:02:26,942 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2020-12-09 14:02:33,910 WARN L197 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-12-09 14:02:34,171 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 14:02:34,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 14:02:34,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 6] total 12 [2020-12-09 14:02:34,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410527237] [2020-12-09 14:02:34,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 14:02:34,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:02:34,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 14:02:34,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2020-12-09 14:02:34,174 INFO L87 Difference]: Start difference. First operand 1043 states and 1115 transitions. Second operand 12 states. [2020-12-09 14:02:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:02:35,340 INFO L93 Difference]: Finished difference Result 1686 states and 1791 transitions. [2020-12-09 14:02:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 14:02:35,340 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 279 [2020-12-09 14:02:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:02:35,341 INFO L225 Difference]: With dead ends: 1686 [2020-12-09 14:02:35,341 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 14:02:35,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 626 SyntacticMatches, 185 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5074 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=209, Invalid=1683, Unknown=0, NotChecked=0, Total=1892 [2020-12-09 14:02:35,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 14:02:35,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 14:02:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 14:02:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 14:02:35,343 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 279 [2020-12-09 14:02:35,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:02:35,343 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 14:02:35,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 14:02:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 14:02:35,344 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 14:02:35,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-09 14:02:35,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 14:02:35,834 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-12-09 14:02:36,074 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-12-09 14:02:36,076 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 14:02:36,076 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 14:02:36,076 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 14:02:36,077 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 14:02:36,078 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 602) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L598-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L601-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L602(line 602) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 14:02:36,079 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 14:02:36,080 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 14:02:36,080 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 14:02:36,080 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse9 (= ~a28~0 10)) (.cse8 (= ~a17~0 8)) (.cse6 (= ~a19~0 1)) (.cse3 (not (= ~a11~0 1))) (.cse11 (<= 9 ~a28~0)) (.cse2 (= ~a25~0 1)) (.cse10 (<= ~a17~0 7)) (.cse5 (<= ~a28~0 10)) (.cse0 (<= ~a19~0 0)) (.cse1 (= ~a21~0 1)) (.cse7 (<= ~a28~0 7)) (.cse4 (<= ~a17~0 8))) (or (and .cse0 (<= 10 ~a28~0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse2 .cse7 .cse4) (and .cse6 .cse1 .cse8 .cse3 .cse9) (and .cse0 .cse5 .cse10) (and .cse11 .cse6 .cse1 .cse2 .cse4 .cse5) (and .cse11 .cse6 .cse1 (not .cse9) .cse8 .cse5) (and .cse6 .cse1 .cse8 .cse2 .cse3) (and .cse6 .cse7 .cse10) (and .cse0 (= ~a25~0 0) .cse1 .cse3 (= ~a28~0 8) .cse4) (and .cse6 .cse1 .cse3 .cse7 .cse4) (and .cse11 .cse2 .cse10 .cse5) (and .cse0 .cse1 .cse7 .cse4))) [2020-12-09 14:02:36,080 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 14:02:36,080 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 14:02:36,080 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 14:02:36,080 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 14:02:36,080 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 14:02:36,080 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 14:02:36,080 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 14:02:36,080 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 14:02:36,080 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse9 (= ~a28~0 10)) (.cse8 (= ~a17~0 8)) (.cse6 (= ~a19~0 1)) (.cse3 (not (= ~a11~0 1))) (.cse11 (<= 9 ~a28~0)) (.cse2 (= ~a25~0 1)) (.cse10 (<= ~a17~0 7)) (.cse5 (<= ~a28~0 10)) (.cse0 (<= ~a19~0 0)) (.cse1 (= ~a21~0 1)) (.cse7 (<= ~a28~0 7)) (.cse4 (<= ~a17~0 8))) (or (and .cse0 (<= 10 ~a28~0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse2 .cse7 .cse4) (and .cse6 .cse1 .cse8 .cse3 .cse9) (and .cse0 .cse5 .cse10) (and .cse11 .cse6 .cse1 .cse2 .cse4 .cse5) (and .cse11 .cse6 .cse1 (not .cse9) .cse8 .cse5) (and .cse6 .cse1 .cse8 .cse2 .cse3) (and .cse6 .cse7 .cse10) (and .cse0 (= ~a25~0 0) .cse1 .cse3 (= ~a28~0 8) .cse4) (and .cse6 .cse1 .cse3 .cse7 .cse4) (and .cse11 .cse2 .cse10 .cse5) (and .cse0 .cse1 .cse7 .cse4))) [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 14:02:36,081 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 14:02:36,082 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 14:02:36,082 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 14:02:36,082 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 14:02:36,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:02:36 BoogieIcfgContainer [2020-12-09 14:02:36,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:02:36,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:02:36,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:02:36,098 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:02:36,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:01:49" (3/4) ... [2020-12-09 14:02:36,100 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 14:02:36,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 14:02:36,119 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 14:02:36,120 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 14:02:36,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 14:02:36,202 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f9bedf50-07f3-41a5-882d-08e002e1aeb3/bin/utaipan/witness.graphml [2020-12-09 14:02:36,202 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:02:36,203 INFO L168 Benchmark]: Toolchain (without parser) took 47992.89 ms. Allocated memory was 100.7 MB in the beginning and 536.9 MB in the end (delta: 436.2 MB). Free memory was 69.8 MB in the beginning and 425.5 MB in the end (delta: -355.6 MB). Peak memory consumption was 80.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:02:36,203 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 100.7 MB. Free memory is still 59.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:02:36,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.95 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 61.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 14:02:36,204 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.62 ms. Allocated memory is still 100.7 MB. Free memory was 61.6 MB in the beginning and 56.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 14:02:36,204 INFO L168 Benchmark]: Boogie Preprocessor took 59.08 ms. Allocated memory is still 100.7 MB. Free memory was 56.2 MB in the beginning and 52.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 14:02:36,204 INFO L168 Benchmark]: RCFGBuilder took 1247.43 ms. Allocated memory was 100.7 MB in the beginning and 144.7 MB in the end (delta: 44.0 MB). Free memory was 52.0 MB in the beginning and 47.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 59.4 MB. Max. memory is 16.1 GB. [2020-12-09 14:02:36,204 INFO L168 Benchmark]: TraceAbstraction took 46163.96 ms. Allocated memory was 144.7 MB in the beginning and 536.9 MB in the end (delta: 392.2 MB). Free memory was 46.8 MB in the beginning and 440.1 MB in the end (delta: -393.3 MB). Peak memory consumption was 262.0 MB. Max. memory is 16.1 GB. [2020-12-09 14:02:36,205 INFO L168 Benchmark]: Witness Printer took 104.71 ms. Allocated memory is still 536.9 MB. Free memory was 440.1 MB in the beginning and 425.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 14:02:36,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 100.7 MB. Free memory is still 59.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 360.95 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 61.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.62 ms. Allocated memory is still 100.7 MB. Free memory was 61.6 MB in the beginning and 56.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.08 ms. Allocated memory is still 100.7 MB. Free memory was 56.2 MB in the beginning and 52.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1247.43 ms. Allocated memory was 100.7 MB in the beginning and 144.7 MB in the end (delta: 44.0 MB). Free memory was 52.0 MB in the beginning and 47.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 59.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 46163.96 ms. Allocated memory was 144.7 MB in the beginning and 536.9 MB in the end (delta: 392.2 MB). Free memory was 46.8 MB in the beginning and 440.1 MB in the end (delta: -393.3 MB). Peak memory consumption was 262.0 MB. Max. memory is 16.1 GB. * Witness Printer took 104.71 ms. Allocated memory is still 536.9 MB. Free memory was 440.1 MB in the beginning and 425.5 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: 602]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((((((((a19 <= 0 && 10 <= a28) && a21 == 1) && a25 == 1) && !(a11 == 1)) && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || ((((a19 == 1 && a21 == 1) && a17 == 8) && !(a11 == 1)) && a28 == 10)) || ((a19 <= 0 && a28 <= 10) && a17 <= 7)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && !(a28 == 10)) && a17 == 8) && a28 <= 10)) || ((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1))) || ((a19 == 1 && a28 <= 7) && a17 <= 7)) || (((((a19 <= 0 && a25 == 0) && a21 == 1) && !(a11 == 1)) && a28 == 8) && a17 <= 8)) || ((((a19 == 1 && a21 == 1) && !(a11 == 1)) && a28 <= 7) && a17 <= 8)) || (((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10)) || (((a19 <= 0 && a21 == 1) && a28 <= 7) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((((((a19 <= 0 && 10 <= a28) && a21 == 1) && a25 == 1) && !(a11 == 1)) && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || ((((a19 == 1 && a21 == 1) && a17 == 8) && !(a11 == 1)) && a28 == 10)) || ((a19 <= 0 && a28 <= 10) && a17 <= 7)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && !(a28 == 10)) && a17 == 8) && a28 <= 10)) || ((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1))) || ((a19 == 1 && a28 <= 7) && a17 <= 7)) || (((((a19 <= 0 && a25 == 0) && a21 == 1) && !(a11 == 1)) && a28 == 8) && a17 <= 8)) || ((((a19 == 1 && a21 == 1) && !(a11 == 1)) && a28 <= 7) && a17 <= 8)) || (((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10)) || (((a19 <= 0 && a21 == 1) && a28 <= 7) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 45.5s, OverallIterations: 14, TraceHistogramMax: 6, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 959 SDtfs, 1819 SDslu, 155 SDs, 0 SdLazy, 4636 SolverSat, 738 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2217 GetRequests, 1958 SyntacticMatches, 188 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5081 ImplicationChecksByTransitivity, 21.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1123occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 675 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 387 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2158 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 246 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 3265 NumberOfCodeBlocks, 3265 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 4185 ConstructedInterpolants, 0 QuantifiedInterpolants, 3076303 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2082 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 24 InterpolantComputations, 17 PerfectInterpolantSequences, 3745/3870 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...