./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label25.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label25.c -s /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/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 5c11f81acb23d199db5ff3acfeb2ee342874a261 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:48:17,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:48:17,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:48:17,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:48:17,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:48:17,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:48:17,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:48:17,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:48:17,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:48:17,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:48:17,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:48:17,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:48:17,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:48:17,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:48:17,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:48:17,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:48:17,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:48:17,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:48:17,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:48:17,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:48:17,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:48:17,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:48:17,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:48:17,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:48:17,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:48:17,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:48:17,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:48:17,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:48:17,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:48:17,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:48:17,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:48:17,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:48:17,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:48:17,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:48:17,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:48:17,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:48:17,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:48:17,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:48:17,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:48:17,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:48:17,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:48:17,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:48:17,469 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:48:17,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:48:17,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:48:17,471 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:48:17,471 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:48:17,471 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:48:17,472 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:48:17,472 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:48:17,472 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:48:17,472 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:48:17,473 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:48:17,473 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:48:17,473 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:48:17,474 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:48:17,474 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:48:17,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:48:17,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:48:17,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:48:17,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:48:17,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:48:17,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:48:17,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:48:17,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:48:17,477 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:48:17,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:48:17,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:48:17,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:48:17,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:48:17,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:48:17,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:48:17,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:48:17,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:48:17,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:48:17,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:48:17,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:48:17,480 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:48:17,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:48:17,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:48:17,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:48:17,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:48:17,482 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_52a024dc-ed7d-4a2c-b660-5223f432c381/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c11f81acb23d199db5ff3acfeb2ee342874a261 [2020-11-22 12:48:17,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:48:17,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:48:17,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:48:17,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:48:17,848 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:48:17,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label25.c [2020-11-22 12:48:17,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/data/3c7ea8d46/9374f767ec224128acd5892667c0d14f/FLAG552262dd4 [2020-11-22 12:48:18,554 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:48:18,554 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/sv-benchmarks/c/eca-rers2012/Problem01_label25.c [2020-11-22 12:48:18,572 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/data/3c7ea8d46/9374f767ec224128acd5892667c0d14f/FLAG552262dd4 [2020-11-22 12:48:18,820 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/data/3c7ea8d46/9374f767ec224128acd5892667c0d14f [2020-11-22 12:48:18,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:48:18,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:48:18,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:48:18,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:48:18,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:48:18,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:48:18" (1/1) ... [2020-11-22 12:48:18,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368aabb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:18, skipping insertion in model container [2020-11-22 12:48:18,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:48:18" (1/1) ... [2020-11-22 12:48:18,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:48:18,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:48:19,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:48:19,421 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:48:19,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:48:19,586 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:48:19,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:19 WrapperNode [2020-11-22 12:48:19,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:48:19,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:48:19,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:48:19,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:48:19,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:19" (1/1) ... [2020-11-22 12:48:19,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:19" (1/1) ... [2020-11-22 12:48:19,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:48:19,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:48:19,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:48:19,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:48:19,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:19" (1/1) ... [2020-11-22 12:48:19,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:19" (1/1) ... [2020-11-22 12:48:19,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:19" (1/1) ... [2020-11-22 12:48:19,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:19" (1/1) ... [2020-11-22 12:48:19,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:19" (1/1) ... [2020-11-22 12:48:19,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:19" (1/1) ... [2020-11-22 12:48:19,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:19" (1/1) ... [2020-11-22 12:48:19,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:48:19,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:48:19,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:48:19,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:48:19,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:48:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:48:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:48:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:48:20,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:48:22,790 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:48:22,791 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:48:22,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:48:22 BoogieIcfgContainer [2020-11-22 12:48:22,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:48:22,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:48:22,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:48:22,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:48:22,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:48:18" (1/3) ... [2020-11-22 12:48:22,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abaf302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:48:22, skipping insertion in model container [2020-11-22 12:48:22,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:19" (2/3) ... [2020-11-22 12:48:22,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abaf302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:48:22, skipping insertion in model container [2020-11-22 12:48:22,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:48:22" (3/3) ... [2020-11-22 12:48:22,804 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label25.c [2020-11-22 12:48:22,819 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:48:22,823 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:48:22,836 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:48:22,874 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:48:22,874 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:48:22,874 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:48:22,875 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:48:22,875 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:48:22,875 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:48:22,875 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:48:22,876 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:48:22,899 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-22 12:48:22,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-22 12:48:22,919 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:22,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:48:22,921 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:22,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:22,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1520712301, now seen corresponding path program 1 times [2020-11-22 12:48:22,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:22,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025414083] [2020-11-22 12:48:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:48:23,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025414083] [2020-11-22 12:48:23,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:48:23,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:48:23,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225352585] [2020-11-22 12:48:23,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:48:23,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:48:23,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:48:23,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:48:23,490 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-11-22 12:48:24,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:48:24,673 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2020-11-22 12:48:24,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:48:24,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-11-22 12:48:24,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:48:24,691 INFO L225 Difference]: With dead ends: 297 [2020-11-22 12:48:24,692 INFO L226 Difference]: Without dead ends: 216 [2020-11-22 12:48:24,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:48:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-22 12:48:24,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-22 12:48:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-22 12:48:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2020-11-22 12:48:24,806 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2020-11-22 12:48:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:48:24,807 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2020-11-22 12:48:24,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:48:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2020-11-22 12:48:24,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-22 12:48:24,818 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:24,819 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:48:24,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:48:24,820 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:24,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1832086468, now seen corresponding path program 1 times [2020-11-22 12:48:24,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:24,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505050729] [2020-11-22 12:48:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:48:25,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505050729] [2020-11-22 12:48:25,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:48:25,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:48:25,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929248518] [2020-11-22 12:48:25,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:48:25,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:48:25,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:48:25,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:48:25,145 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2020-11-22 12:48:26,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:48:26,070 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2020-11-22 12:48:26,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:48:26,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-22 12:48:26,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:48:26,074 INFO L225 Difference]: With dead ends: 500 [2020-11-22 12:48:26,075 INFO L226 Difference]: Without dead ends: 287 [2020-11-22 12:48:26,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:48:26,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-22 12:48:26,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2020-11-22 12:48:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-22 12:48:26,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2020-11-22 12:48:26,098 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2020-11-22 12:48:26,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:48:26,100 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2020-11-22 12:48:26,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:48:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2020-11-22 12:48:26,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-22 12:48:26,107 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:26,107 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:48:26,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:48:26,108 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:26,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:26,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1009060424, now seen corresponding path program 1 times [2020-11-22 12:48:26,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:26,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555227882] [2020-11-22 12:48:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:48:26,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555227882] [2020-11-22 12:48:26,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:48:26,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:48:26,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402370255] [2020-11-22 12:48:26,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:48:26,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:48:26,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:48:26,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:48:26,247 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2020-11-22 12:48:26,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:48:26,918 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-11-22 12:48:26,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:48:26,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-22 12:48:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:48:26,923 INFO L225 Difference]: With dead ends: 573 [2020-11-22 12:48:26,923 INFO L226 Difference]: Without dead ends: 358 [2020-11-22 12:48:26,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:48:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-22 12:48:26,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-11-22 12:48:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-22 12:48:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2020-11-22 12:48:26,972 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 86 [2020-11-22 12:48:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:48:26,973 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2020-11-22 12:48:26,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:48:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2020-11-22 12:48:26,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-22 12:48:26,982 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:26,982 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:48:26,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:48:26,982 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:26,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:26,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1460487454, now seen corresponding path program 1 times [2020-11-22 12:48:26,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:26,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467082852] [2020-11-22 12:48:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:48:27,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467082852] [2020-11-22 12:48:27,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:48:27,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:48:27,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870031911] [2020-11-22 12:48:27,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:48:27,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:48:27,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:48:27,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:48:27,038 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand 3 states. [2020-11-22 12:48:27,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:48:27,513 INFO L93 Difference]: Finished difference Result 999 states and 1341 transitions. [2020-11-22 12:48:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:48:27,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-11-22 12:48:27,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:48:27,517 INFO L225 Difference]: With dead ends: 999 [2020-11-22 12:48:27,517 INFO L226 Difference]: Without dead ends: 642 [2020-11-22 12:48:27,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:48:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-22 12:48:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-11-22 12:48:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-22 12:48:27,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 778 transitions. [2020-11-22 12:48:27,561 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 778 transitions. Word has length 95 [2020-11-22 12:48:27,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:48:27,562 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 778 transitions. [2020-11-22 12:48:27,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:48:27,562 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 778 transitions. [2020-11-22 12:48:27,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-22 12:48:27,564 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:27,564 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:48:27,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:48:27,565 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:27,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:27,565 INFO L82 PathProgramCache]: Analyzing trace with hash 73607610, now seen corresponding path program 1 times [2020-11-22 12:48:27,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:27,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042591217] [2020-11-22 12:48:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-22 12:48:27,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042591217] [2020-11-22 12:48:27,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:48:27,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:48:27,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306618412] [2020-11-22 12:48:27,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:48:27,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:48:27,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:48:27,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:48:27,753 INFO L87 Difference]: Start difference. First operand 571 states and 778 transitions. Second operand 4 states. [2020-11-22 12:48:28,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:48:28,366 INFO L93 Difference]: Finished difference Result 1283 states and 1752 transitions. [2020-11-22 12:48:28,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:48:28,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-11-22 12:48:28,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:48:28,371 INFO L225 Difference]: With dead ends: 1283 [2020-11-22 12:48:28,371 INFO L226 Difference]: Without dead ends: 713 [2020-11-22 12:48:28,372 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 [2020-11-22 12:48:28,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-22 12:48:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2020-11-22 12:48:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-22 12:48:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 857 transitions. [2020-11-22 12:48:28,396 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 857 transitions. Word has length 120 [2020-11-22 12:48:28,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:48:28,396 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 857 transitions. [2020-11-22 12:48:28,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:48:28,396 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 857 transitions. [2020-11-22 12:48:28,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-11-22 12:48:28,398 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:28,399 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:48:28,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:48:28,399 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:28,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:28,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1828606423, now seen corresponding path program 1 times [2020-11-22 12:48:28,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:28,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203033738] [2020-11-22 12:48:28,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-22 12:48:28,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203033738] [2020-11-22 12:48:28,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:48:28,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:48:28,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008679073] [2020-11-22 12:48:28,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:48:28,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:48:28,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:48:28,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:48:28,493 INFO L87 Difference]: Start difference. First operand 642 states and 857 transitions. Second operand 4 states. [2020-11-22 12:48:29,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:48:29,176 INFO L93 Difference]: Finished difference Result 1496 states and 1975 transitions. [2020-11-22 12:48:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:48:29,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-11-22 12:48:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:48:29,183 INFO L225 Difference]: With dead ends: 1496 [2020-11-22 12:48:29,183 INFO L226 Difference]: Without dead ends: 855 [2020-11-22 12:48:29,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:48:29,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-22 12:48:29,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2020-11-22 12:48:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 12:48:29,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1021 transitions. [2020-11-22 12:48:29,211 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1021 transitions. Word has length 134 [2020-11-22 12:48:29,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:48:29,212 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1021 transitions. [2020-11-22 12:48:29,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:48:29,212 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1021 transitions. [2020-11-22 12:48:29,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-11-22 12:48:29,215 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:29,216 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:48:29,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:48:29,216 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:29,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:29,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1124332216, now seen corresponding path program 1 times [2020-11-22 12:48:29,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:29,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130066888] [2020-11-22 12:48:29,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-22 12:48:29,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130066888] [2020-11-22 12:48:29,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:48:29,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:48:29,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684107043] [2020-11-22 12:48:29,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:48:29,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:48:29,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:48:29,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:48:29,369 INFO L87 Difference]: Start difference. First operand 784 states and 1021 transitions. Second operand 3 states. [2020-11-22 12:48:29,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:48:29,804 INFO L93 Difference]: Finished difference Result 1709 states and 2194 transitions. [2020-11-22 12:48:29,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:48:29,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-11-22 12:48:29,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:48:29,812 INFO L225 Difference]: With dead ends: 1709 [2020-11-22 12:48:29,812 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 12:48:29,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:48:29,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 12:48:29,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-11-22 12:48:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 12:48:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1015 transitions. [2020-11-22 12:48:29,841 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1015 transitions. Word has length 167 [2020-11-22 12:48:29,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:48:29,843 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1015 transitions. [2020-11-22 12:48:29,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:48:29,844 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1015 transitions. [2020-11-22 12:48:29,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-11-22 12:48:29,848 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:29,848 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:48:29,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:48:29,849 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:29,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:29,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1710311136, now seen corresponding path program 1 times [2020-11-22 12:48:29,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:29,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907217729] [2020-11-22 12:48:29,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-11-22 12:48:30,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907217729] [2020-11-22 12:48:30,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:48:30,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:48:30,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642673637] [2020-11-22 12:48:30,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:48:30,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:48:30,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:48:30,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:48:30,068 INFO L87 Difference]: Start difference. First operand 784 states and 1015 transitions. Second operand 3 states. [2020-11-22 12:48:30,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:48:30,541 INFO L93 Difference]: Finished difference Result 1709 states and 2182 transitions. [2020-11-22 12:48:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:48:30,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2020-11-22 12:48:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:48:30,548 INFO L225 Difference]: With dead ends: 1709 [2020-11-22 12:48:30,548 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 12:48:30,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:48:30,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 12:48:30,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2020-11-22 12:48:30,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-22 12:48:30,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1055 transitions. [2020-11-22 12:48:30,577 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1055 transitions. Word has length 210 [2020-11-22 12:48:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:48:30,578 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1055 transitions. [2020-11-22 12:48:30,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:48:30,578 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1055 transitions. [2020-11-22 12:48:30,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-11-22 12:48:30,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:30,583 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-11-22 12:48:30,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:48:30,584 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:30,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:30,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1559671481, now seen corresponding path program 1 times [2020-11-22 12:48:30,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:30,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242343609] [2020-11-22 12:48:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 235 proven. 35 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-11-22 12:48:30,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242343609] [2020-11-22 12:48:30,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116652401] [2020-11-22 12:48:30,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:48:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:31,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:48:31,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:48:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-11-22 12:48:31,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:48:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-11-22 12:48:31,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:48:31,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-22 12:48:31,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445288895] [2020-11-22 12:48:31,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:48:31,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:48:31,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:48:31,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:48:31,566 INFO L87 Difference]: Start difference. First operand 855 states and 1055 transitions. Second operand 3 states. [2020-11-22 12:48:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:48:32,032 INFO L93 Difference]: Finished difference Result 1993 states and 2470 transitions. [2020-11-22 12:48:32,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:48:32,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2020-11-22 12:48:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:48:32,042 INFO L225 Difference]: With dead ends: 1993 [2020-11-22 12:48:32,042 INFO L226 Difference]: Without dead ends: 1139 [2020-11-22 12:48:32,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 443 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:48:32,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-22 12:48:32,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2020-11-22 12:48:32,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-22 12:48:32,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1253 transitions. [2020-11-22 12:48:32,093 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1253 transitions. Word has length 223 [2020-11-22 12:48:32,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:48:32,093 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1253 transitions. [2020-11-22 12:48:32,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:48:32,094 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1253 transitions. [2020-11-22 12:48:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-11-22 12:48:32,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:32,099 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:48:32,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-22 12:48:32,324 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:32,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1492293271, now seen corresponding path program 1 times [2020-11-22 12:48:32,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:32,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525040310] [2020-11-22 12:48:32,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 260 proven. 55 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-22 12:48:32,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525040310] [2020-11-22 12:48:32,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452070000] [2020-11-22 12:48:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:48:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:48:32,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:48:32,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:48:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-11-22 12:48:32,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:48:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-11-22 12:48:32,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:48:32,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-11-22 12:48:32,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624213926] [2020-11-22 12:48:32,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:48:32,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:48:32,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:48:32,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:48:32,950 INFO L87 Difference]: Start difference. First operand 997 states and 1253 transitions. Second operand 3 states. [2020-11-22 12:48:33,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:48:33,419 INFO L93 Difference]: Finished difference Result 1991 states and 2504 transitions. [2020-11-22 12:48:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:48:33,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-11-22 12:48:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:48:33,421 INFO L225 Difference]: With dead ends: 1991 [2020-11-22 12:48:33,421 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:48:33,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:48:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:48:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:48:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:48:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:48:33,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 232 [2020-11-22 12:48:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:48:33,424 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:48:33,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:48:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:48:33,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:48:33,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-22 12:48:33,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:48:33,853 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-11-22 12:48:34,006 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-11-22 12:48:34,010 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-22 12:48:34,010 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-22 12:48:34,010 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-22 12:48:34,011 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-22 12:48:34,011 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-22 12:48:34,011 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-22 12:48:34,011 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-22 12:48:34,011 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-22 12:48:34,011 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-22 12:48:34,011 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-22 12:48:34,011 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-22 12:48:34,011 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-22 12:48:34,011 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-22 12:48:34,011 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-22 12:48:34,012 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-22 12:48:34,012 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-22 12:48:34,012 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-22 12:48:34,012 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-22 12:48:34,012 INFO L274 CegarLoopResult]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:48:34,012 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-22 12:48:34,012 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-22 12:48:34,012 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-22 12:48:34,012 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-22 12:48:34,012 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-22 12:48:34,012 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-22 12:48:34,012 INFO L274 CegarLoopResult]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L543(line 543) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-22 12:48:34,013 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-22 12:48:34,014 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:48:34,014 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-22 12:48:34,014 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-22 12:48:34,014 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-22 12:48:34,014 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (= ~a20~0 1)) (.cse2 (not (= ~a7~0 1))) (.cse4 (<= ~a16~0 5)) (.cse3 (= ~a17~0 1)) (.cse5 (= ~a16~0 6)) (.cse0 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and (= ~a21~0 1) (= ~a12~0 8) .cse1 .cse2 .cse3) (and .cse4 .cse0) (and .cse5 .cse2 .cse3) (and .cse4 .cse3) (and .cse5 .cse0))) [2020-11-22 12:48:34,014 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-22 12:48:34,014 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-22 12:48:34,015 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-22 12:48:34,015 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-22 12:48:34,015 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-22 12:48:34,015 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-22 12:48:34,015 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-22 12:48:34,015 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:48:34,020 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-22 12:48:34,021 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-22 12:48:34,021 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-22 12:48:34,021 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-22 12:48:34,021 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-22 12:48:34,021 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-22 12:48:34,021 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-22 12:48:34,022 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-22 12:48:34,022 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-22 12:48:34,022 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-22 12:48:34,022 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-22 12:48:34,022 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-22 12:48:34,022 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-22 12:48:34,022 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-22 12:48:34,023 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-22 12:48:34,024 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (= ~a20~0 1)) (.cse2 (not (= ~a7~0 1))) (.cse4 (<= ~a16~0 5)) (.cse3 (= ~a17~0 1)) (.cse5 (= ~a16~0 6)) (.cse0 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and (= ~a21~0 1) (= ~a12~0 8) .cse1 .cse2 .cse3) (and .cse4 .cse0) (and .cse5 .cse2 .cse3) (and .cse4 .cse3) (and .cse5 .cse0))) [2020-11-22 12:48:34,025 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-22 12:48:34,025 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:48:34,025 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-22 12:48:34,025 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-22 12:48:34,025 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-22 12:48:34,026 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-22 12:48:34,026 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-22 12:48:34,026 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-22 12:48:34,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:48:34 BoogieIcfgContainer [2020-11-22 12:48:34,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:48:34,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:48:34,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:48:34,073 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:48:34,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:48:22" (3/4) ... [2020-11-22 12:48:34,077 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:48:34,121 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-22 12:48:34,123 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-11-22 12:48:34,125 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:48:34,127 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:48:34,296 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_52a024dc-ed7d-4a2c-b660-5223f432c381/bin/utaipan/witness.graphml [2020-11-22 12:48:34,296 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:48:34,297 INFO L168 Benchmark]: Toolchain (without parser) took 15472.96 ms. Allocated memory was 96.5 MB in the beginning and 348.1 MB in the end (delta: 251.7 MB). Free memory was 67.2 MB in the beginning and 147.5 MB in the end (delta: -80.4 MB). Peak memory consumption was 172.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:34,297 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory was 55.6 MB in the beginning and 55.5 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:48:34,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 754.21 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 56.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:34,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.37 ms. Allocated memory is still 96.5 MB. Free memory was 56.9 MB in the beginning and 51.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:34,298 INFO L168 Benchmark]: Boogie Preprocessor took 151.67 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 51.1 MB in the beginning and 105.5 MB in the end (delta: -54.4 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:34,299 INFO L168 Benchmark]: RCFGBuilder took 2934.00 ms. Allocated memory is still 132.1 MB. Free memory was 105.3 MB in the beginning and 90.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 78.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:34,299 INFO L168 Benchmark]: TraceAbstraction took 11271.93 ms. Allocated memory was 132.1 MB in the beginning and 348.1 MB in the end (delta: 216.0 MB). Free memory was 90.7 MB in the beginning and 163.3 MB in the end (delta: -72.6 MB). Peak memory consumption was 143.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:34,300 INFO L168 Benchmark]: Witness Printer took 228.70 ms. Allocated memory is still 348.1 MB. Free memory was 163.3 MB in the beginning and 147.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:34,302 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory was 55.6 MB in the beginning and 55.5 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 754.21 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 56.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 116.37 ms. Allocated memory is still 96.5 MB. Free memory was 56.9 MB in the beginning and 51.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 151.67 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 51.1 MB in the beginning and 105.5 MB in the end (delta: -54.4 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2934.00 ms. Allocated memory is still 132.1 MB. Free memory was 105.3 MB in the beginning and 90.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 78.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11271.93 ms. Allocated memory was 132.1 MB in the beginning and 348.1 MB in the end (delta: 216.0 MB). Free memory was 90.7 MB in the beginning and 163.3 MB in the end (delta: -72.6 MB). Peak memory consumption was 143.4 MB. Max. memory is 16.1 GB. * Witness Printer took 228.70 ms. Allocated memory is still 348.1 MB. Free memory was 163.3 MB in the beginning and 147.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((a17 <= 0 && a20 == 1) && !(a7 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (a16 <= 5 && a17 <= 0)) || ((a16 == 6 && !(a7 == 1)) && a17 == 1)) || (a16 <= 5 && a17 == 1)) || (a16 == 6 && a17 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((a17 <= 0 && a20 == 1) && !(a7 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (a16 <= 5 && a17 <= 0)) || ((a16 == 6 && !(a7 == 1)) && a17 == 1)) || (a16 <= 5 && a17 == 1)) || (a16 == 6 && a17 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.7s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 450 SDtfs, 966 SDslu, 59 SDs, 0 SdLazy, 2594 SolverSat, 668 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 942 GetRequests, 918 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=997occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 639 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 36 NumberOfFragments, 123 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4002 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 260 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1871 NumberOfCodeBlocks, 1871 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2312 ConstructedInterpolants, 0 QuantifiedInterpolants, 1165240 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1108 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 3014/3104 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...