./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_8.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_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_8.c -s /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/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 37d0ed05d77a0379c9ed98058bf2f327252773ce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:38:52,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:52,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:52,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:52,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:52,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:52,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:52,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:52,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:52,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:52,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:52,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:52,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:52,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:52,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:52,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:52,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:52,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:52,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:52,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:52,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:52,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:52,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:52,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:52,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:52,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:52,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:52,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:52,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:52,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:52,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:52,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:52,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:52,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:52,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:52,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:52,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:52,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:52,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:52,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:52,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:52,575 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:38:52,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:52,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:52,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:52,605 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:52,606 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:52,606 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:52,606 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:38:52,606 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:52,607 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:52,607 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:38:52,608 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:38:52,608 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:52,609 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:38:52,609 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:38:52,609 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:38:52,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:52,610 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:38:52,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:38:52,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:38:52,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:52,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:38:52,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:52,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:38:52,612 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:38:52,612 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:38:52,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:38:52,613 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:52,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:38:52,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:52,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:52,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:52,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:52,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:52,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:52,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:38:52,615 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:38:52,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:38:52,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:38:52,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:52,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:52,616 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_52da2d70-7165-496a-951c-6bda45b93b2a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37d0ed05d77a0379c9ed98058bf2f327252773ce [2020-11-28 07:38:52,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:52,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:52,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:52,906 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:52,906 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:52,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_8.c [2020-11-28 07:38:52,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan/data/8d833828b/807ca9109fea4d28a8632b514cf3d664/FLAGc6ef38c15 [2020-11-28 07:38:53,379 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:53,380 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/sv-benchmarks/c/locks/test_locks_8.c [2020-11-28 07:38:53,387 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan/data/8d833828b/807ca9109fea4d28a8632b514cf3d664/FLAGc6ef38c15 [2020-11-28 07:38:53,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan/data/8d833828b/807ca9109fea4d28a8632b514cf3d664 [2020-11-28 07:38:53,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:53,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:53,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:53,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:53,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:53,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:53" (1/1) ... [2020-11-28 07:38:53,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f30857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:53, skipping insertion in model container [2020-11-28 07:38:53,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:53" (1/1) ... [2020-11-28 07:38:53,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:53,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:54,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:54,088 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:54,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:54,119 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:54,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:54 WrapperNode [2020-11-28 07:38:54,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:54,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:54,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:54,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:54,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:54" (1/1) ... [2020-11-28 07:38:54,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:54" (1/1) ... [2020-11-28 07:38:54,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:54,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:54,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:54,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:54,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:54" (1/1) ... [2020-11-28 07:38:54,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:54" (1/1) ... [2020-11-28 07:38:54,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:54" (1/1) ... [2020-11-28 07:38:54,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:54" (1/1) ... [2020-11-28 07:38:54,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:54" (1/1) ... [2020-11-28 07:38:54,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:54" (1/1) ... [2020-11-28 07:38:54,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:54" (1/1) ... [2020-11-28 07:38:54,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:54,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:54,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:54,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:54,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:54,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:54,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:38:54,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:54,850 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:54,850 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 07:38:54,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:54 BoogieIcfgContainer [2020-11-28 07:38:54,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:54,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:54,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:54,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:54,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:53" (1/3) ... [2020-11-28 07:38:54,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2522fec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:54, skipping insertion in model container [2020-11-28 07:38:54,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:54" (2/3) ... [2020-11-28 07:38:54,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2522fec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:54, skipping insertion in model container [2020-11-28 07:38:54,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:54" (3/3) ... [2020-11-28 07:38:54,865 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2020-11-28 07:38:54,876 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:54,881 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:38:54,893 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:38:54,917 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:54,917 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:54,917 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:54,917 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:54,918 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:54,918 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:54,918 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:54,918 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:54,931 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-28 07:38:54,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:38:54,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:54,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:38:54,937 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:54,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:54,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1332053290, now seen corresponding path program 1 times [2020-11-28 07:38:54,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:54,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683624920] [2020-11-28 07:38:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:55,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683624920] [2020-11-28 07:38:55,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:55,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:38:55,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131420992] [2020-11-28 07:38:55,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:55,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:55,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:55,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:55,206 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-11-28 07:38:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:55,269 INFO L93 Difference]: Finished difference Result 50 states and 81 transitions. [2020-11-28 07:38:55,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:55,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 07:38:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:55,280 INFO L225 Difference]: With dead ends: 50 [2020-11-28 07:38:55,280 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 07:38:55,288 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 [2020-11-28 07:38:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 07:38:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 21. [2020-11-28 07:38:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 07:38:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 35 transitions. [2020-11-28 07:38:55,336 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 35 transitions. Word has length 6 [2020-11-28 07:38:55,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:55,337 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 35 transitions. [2020-11-28 07:38:55,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 35 transitions. [2020-11-28 07:38:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:38:55,338 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:55,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:55,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:38:55,338 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:55,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:55,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1655806974, now seen corresponding path program 1 times [2020-11-28 07:38:55,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:55,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91297102] [2020-11-28 07:38:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:55,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91297102] [2020-11-28 07:38:55,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:55,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:38:55,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635453206] [2020-11-28 07:38:55,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:55,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:55,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:55,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:55,418 INFO L87 Difference]: Start difference. First operand 21 states and 35 transitions. Second operand 4 states. [2020-11-28 07:38:55,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:55,446 INFO L93 Difference]: Finished difference Result 39 states and 63 transitions. [2020-11-28 07:38:55,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:55,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:38:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:55,449 INFO L225 Difference]: With dead ends: 39 [2020-11-28 07:38:55,449 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 07:38:55,450 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 [2020-11-28 07:38:55,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 07:38:55,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 21. [2020-11-28 07:38:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 07:38:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 34 transitions. [2020-11-28 07:38:55,455 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 34 transitions. Word has length 7 [2020-11-28 07:38:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:55,455 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 34 transitions. [2020-11-28 07:38:55,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 34 transitions. [2020-11-28 07:38:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:38:55,456 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:55,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:55,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:38:55,456 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:55,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:55,459 INFO L82 PathProgramCache]: Analyzing trace with hash 209805695, now seen corresponding path program 1 times [2020-11-28 07:38:55,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:55,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924575863] [2020-11-28 07:38:55,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:55,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924575863] [2020-11-28 07:38:55,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:55,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:38:55,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663790581] [2020-11-28 07:38:55,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:55,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:55,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:55,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:55,520 INFO L87 Difference]: Start difference. First operand 21 states and 34 transitions. Second operand 4 states. [2020-11-28 07:38:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:55,544 INFO L93 Difference]: Finished difference Result 37 states and 58 transitions. [2020-11-28 07:38:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:55,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 07:38:55,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:55,546 INFO L225 Difference]: With dead ends: 37 [2020-11-28 07:38:55,547 INFO L226 Difference]: Without dead ends: 35 [2020-11-28 07:38:55,547 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 [2020-11-28 07:38:55,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-28 07:38:55,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2020-11-28 07:38:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 07:38:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 33 transitions. [2020-11-28 07:38:55,551 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 33 transitions. Word has length 8 [2020-11-28 07:38:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:55,552 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 33 transitions. [2020-11-28 07:38:55,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:55,552 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2020-11-28 07:38:55,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:38:55,552 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:55,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:55,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:38:55,553 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:55,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:55,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2085743369, now seen corresponding path program 1 times [2020-11-28 07:38:55,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:55,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243465633] [2020-11-28 07:38:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:55,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243465633] [2020-11-28 07:38:55,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:55,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:38:55,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105843533] [2020-11-28 07:38:55,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:55,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:55,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:55,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:55,609 INFO L87 Difference]: Start difference. First operand 21 states and 33 transitions. Second operand 4 states. [2020-11-28 07:38:55,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:55,636 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-11-28 07:38:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:55,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 07:38:55,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:55,638 INFO L225 Difference]: With dead ends: 35 [2020-11-28 07:38:55,638 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 07:38:55,638 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 [2020-11-28 07:38:55,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 07:38:55,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 21. [2020-11-28 07:38:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 07:38:55,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2020-11-28 07:38:55,642 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 9 [2020-11-28 07:38:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:55,642 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 32 transitions. [2020-11-28 07:38:55,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 32 transitions. [2020-11-28 07:38:55,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:38:55,646 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:55,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:55,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:38:55,647 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:55,648 INFO L82 PathProgramCache]: Analyzing trace with hash -233319980, now seen corresponding path program 1 times [2020-11-28 07:38:55,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:55,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483911557] [2020-11-28 07:38:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:55,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483911557] [2020-11-28 07:38:55,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:55,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:38:55,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797706738] [2020-11-28 07:38:55,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:55,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:55,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:55,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:55,712 INFO L87 Difference]: Start difference. First operand 21 states and 32 transitions. Second operand 4 states. [2020-11-28 07:38:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:55,735 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2020-11-28 07:38:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:55,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 07:38:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:55,736 INFO L225 Difference]: With dead ends: 33 [2020-11-28 07:38:55,736 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 07:38:55,737 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 [2020-11-28 07:38:55,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 07:38:55,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2020-11-28 07:38:55,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 07:38:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2020-11-28 07:38:55,740 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2020-11-28 07:38:55,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:55,741 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-11-28 07:38:55,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2020-11-28 07:38:55,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:38:55,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:55,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:55,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:38:55,742 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:55,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:55,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1357230572, now seen corresponding path program 1 times [2020-11-28 07:38:55,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:55,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343275572] [2020-11-28 07:38:55,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:55,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343275572] [2020-11-28 07:38:55,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:55,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:38:55,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218539748] [2020-11-28 07:38:55,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:55,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:55,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:55,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:55,805 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 4 states. [2020-11-28 07:38:55,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:55,837 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2020-11-28 07:38:55,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:55,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 07:38:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:55,838 INFO L225 Difference]: With dead ends: 31 [2020-11-28 07:38:55,839 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 07:38:55,839 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 [2020-11-28 07:38:55,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 07:38:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2020-11-28 07:38:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 07:38:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2020-11-28 07:38:55,845 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 11 [2020-11-28 07:38:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:55,846 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-11-28 07:38:55,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2020-11-28 07:38:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:38:55,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:55,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:55,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:38:55,847 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:55,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:55,847 INFO L82 PathProgramCache]: Analyzing trace with hash -875309527, now seen corresponding path program 1 times [2020-11-28 07:38:55,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:55,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418004755] [2020-11-28 07:38:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:55,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418004755] [2020-11-28 07:38:55,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:55,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:38:55,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868611372] [2020-11-28 07:38:55,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:55,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:55,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:55,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:55,913 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. Second operand 4 states. [2020-11-28 07:38:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:55,942 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2020-11-28 07:38:55,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:55,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 07:38:55,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:55,946 INFO L225 Difference]: With dead ends: 29 [2020-11-28 07:38:55,946 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 07:38:55,946 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 [2020-11-28 07:38:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 07:38:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2020-11-28 07:38:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 07:38:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2020-11-28 07:38:55,949 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 12 [2020-11-28 07:38:55,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:55,949 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2020-11-28 07:38:55,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:55,950 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2020-11-28 07:38:55,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:38:55,950 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:55,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:55,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:38:55,951 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:55,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:55,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1364575519, now seen corresponding path program 1 times [2020-11-28 07:38:55,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:55,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632815915] [2020-11-28 07:38:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:56,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:56,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632815915] [2020-11-28 07:38:56,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:56,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:38:56,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571236493] [2020-11-28 07:38:56,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:56,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:56,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:56,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:56,016 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand 4 states. [2020-11-28 07:38:56,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:56,040 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2020-11-28 07:38:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:56,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 07:38:56,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:56,040 INFO L225 Difference]: With dead ends: 23 [2020-11-28 07:38:56,041 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:38:56,041 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 [2020-11-28 07:38:56,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:38:56,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:38:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:38:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:38:56,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-28 07:38:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:56,042 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:38:56,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:38:56,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:38:56,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:38:56,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:38:56,062 INFO L274 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-11-28 07:38:56,062 INFO L274 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-11-28 07:38:56,063 INFO L274 CegarLoopResult]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 07:38:56,063 INFO L277 CegarLoopResult]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2020-11-28 07:38:56,063 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:38:56,063 INFO L274 CegarLoopResult]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 07:38:56,063 INFO L277 CegarLoopResult]: At program point L136(lines 6 137) the Hoare annotation is: true [2020-11-28 07:38:56,063 INFO L274 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-11-28 07:38:56,063 INFO L274 CegarLoopResult]: For program point L37(lines 37 39) no Hoare annotation was computed. [2020-11-28 07:38:56,064 INFO L274 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-11-28 07:38:56,064 INFO L270 CegarLoopResult]: At program point L128-1(lines 7 137) the Hoare annotation is: false [2020-11-28 07:38:56,064 INFO L274 CegarLoopResult]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 07:38:56,064 INFO L274 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-11-28 07:38:56,064 INFO L274 CegarLoopResult]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 07:38:56,064 INFO L274 CegarLoopResult]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 07:38:56,064 INFO L274 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-11-28 07:38:56,064 INFO L274 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-11-28 07:38:56,064 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:38:56,065 INFO L274 CegarLoopResult]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 07:38:56,065 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:38:56,065 INFO L274 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-11-28 07:38:56,065 INFO L277 CegarLoopResult]: At program point L133(lines 7 137) the Hoare annotation is: true [2020-11-28 07:38:56,065 INFO L274 CegarLoopResult]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 07:38:56,065 INFO L274 CegarLoopResult]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2020-11-28 07:38:56,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:38:56 BoogieIcfgContainer [2020-11-28 07:38:56,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:38:56,075 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:38:56,075 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:38:56,075 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:38:56,076 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:54" (3/4) ... [2020-11-28 07:38:56,078 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:38:56,089 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 07:38:56,089 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:38:56,090 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:38:56,090 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:38:56,166 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_52da2d70-7165-496a-951c-6bda45b93b2a/bin/utaipan/witness.graphml [2020-11-28 07:38:56,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:38:56,172 INFO L168 Benchmark]: Toolchain (without parser) took 2375.48 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 60.1 MB in the beginning and 62.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:56,173 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:56,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.80 ms. Allocated memory is still 88.1 MB. Free memory was 60.1 MB in the beginning and 65.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:56,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.04 ms. Allocated memory is still 88.1 MB. Free memory was 65.6 MB in the beginning and 63.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:56,174 INFO L168 Benchmark]: Boogie Preprocessor took 23.13 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 62.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:56,174 INFO L168 Benchmark]: RCFGBuilder took 672.18 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 62.7 MB in the beginning and 75.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:56,175 INFO L168 Benchmark]: TraceAbstraction took 1220.44 ms. Allocated memory is still 109.1 MB. Free memory was 75.3 MB in the beginning and 66.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:56,175 INFO L168 Benchmark]: Witness Printer took 95.43 ms. Allocated memory is still 109.1 MB. Free memory was 66.0 MB in the beginning and 62.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:56,177 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 88.1 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.80 ms. Allocated memory is still 88.1 MB. Free memory was 60.1 MB in the beginning and 65.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.04 ms. Allocated memory is still 88.1 MB. Free memory was 65.6 MB in the beginning and 63.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.13 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 62.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 672.18 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 62.7 MB in the beginning and 75.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1220.44 ms. Allocated memory is still 109.1 MB. Free memory was 75.3 MB in the beginning and 66.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Witness Printer took 95.43 ms. Allocated memory is still 109.1 MB. Free memory was 66.0 MB in the beginning and 62.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 241 SDtfs, 202 SDslu, 344 SDs, 0 SdLazy, 72 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 84 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 2844 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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...