./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.02.cil.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_f36a5340-943d-4e13-87ba-47018a4d8701/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.02.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/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 5c6676c90977e408adf03f66d7ae0804453cb34e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:00:18,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:00:18,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:00:18,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:00:18,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:00:18,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:00:18,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:00:18,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:00:18,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:00:18,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:00:18,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:00:18,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:00:18,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:00:18,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:00:18,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:00:18,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:00:18,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:00:18,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:00:18,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:00:18,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:00:18,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:00:18,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:00:18,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:00:18,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:00:18,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:00:18,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:00:18,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:00:18,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:00:18,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:00:18,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:00:18,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:00:18,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:00:18,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:00:18,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:00:18,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:00:18,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:00:18,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:00:18,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:00:18,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:00:18,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:00:18,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:00:18,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:00:18,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:00:18,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:00:18,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:00:18,997 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:00:18,997 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:00:18,997 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:00:18,998 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:00:18,998 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:00:18,998 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:00:18,998 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:00:18,999 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:00:18,999 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:00:18,999 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:00:18,999 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:00:19,000 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:00:19,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:00:19,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:00:19,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:00:19,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:00:19,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:00:19,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:00:19,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:00:19,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:00:19,002 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:00:19,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:00:19,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:00:19,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:00:19,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:00:19,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:00:19,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:00:19,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:00:19,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:00:19,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:00:19,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:00:19,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:00:19,005 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:00:19,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:00:19,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:00:19,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:00:19,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:00:19,006 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_f36a5340-943d-4e13-87ba-47018a4d8701/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c6676c90977e408adf03f66d7ae0804453cb34e [2020-11-22 13:00:19,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:00:19,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:00:19,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:00:19,295 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:00:19,296 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:00:19,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/bin/utaipan/../../sv-benchmarks/c/systemc/transmitter.02.cil.c [2020-11-22 13:00:19,367 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/bin/utaipan/data/b19c8282c/5b53a43210284f0f91bf0960ba79de21/FLAG8d96aa959 [2020-11-22 13:00:19,880 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:00:19,880 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/sv-benchmarks/c/systemc/transmitter.02.cil.c [2020-11-22 13:00:19,894 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/bin/utaipan/data/b19c8282c/5b53a43210284f0f91bf0960ba79de21/FLAG8d96aa959 [2020-11-22 13:00:20,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/bin/utaipan/data/b19c8282c/5b53a43210284f0f91bf0960ba79de21 [2020-11-22 13:00:20,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:00:20,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:00:20,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:20,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:00:20,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:00:20,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67d4932a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20, skipping insertion in model container [2020-11-22 13:00:20,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:00:20,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:00:20,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:20,658 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:00:20,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:20,751 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:00:20,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20 WrapperNode [2020-11-22 13:00:20,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:20,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:00:20,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:00:20,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:00:20,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:00:20,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:00:20,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:00:20,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:00:20,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:00:20,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:00:20,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:00:20,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:00:20,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/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 13:00:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:00:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:00:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:00:20,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:00:22,798 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:00:22,799 INFO L298 CfgBuilder]: Removed 96 assume(true) statements. [2020-11-22 13:00:22,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:22 BoogieIcfgContainer [2020-11-22 13:00:22,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:00:22,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:00:22,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:00:22,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:00:22,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:00:20" (1/3) ... [2020-11-22 13:00:22,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73df92ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:00:22, skipping insertion in model container [2020-11-22 13:00:22,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20" (2/3) ... [2020-11-22 13:00:22,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73df92ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:00:22, skipping insertion in model container [2020-11-22 13:00:22,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:22" (3/3) ... [2020-11-22 13:00:22,811 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-11-22 13:00:22,823 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:00:22,827 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:00:22,838 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:00:22,876 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:00:22,876 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:00:22,876 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:00:22,877 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:00:22,877 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:00:22,877 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:00:22,877 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:00:22,877 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:00:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-11-22 13:00:22,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-22 13:00:22,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:22,905 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] [2020-11-22 13:00:22,905 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:22,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1913549870, now seen corresponding path program 1 times [2020-11-22 13:00:22,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:22,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764804976] [2020-11-22 13:00:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:23,150 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 13:00:23,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764804976] [2020-11-22 13:00:23,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:23,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:23,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482498742] [2020-11-22 13:00:23,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:00:23,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:23,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:00:23,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:00:23,178 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-11-22 13:00:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:23,381 INFO L93 Difference]: Finished difference Result 295 states and 453 transitions. [2020-11-22 13:00:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:00:23,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-22 13:00:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:23,395 INFO L225 Difference]: With dead ends: 295 [2020-11-22 13:00:23,396 INFO L226 Difference]: Without dead ends: 203 [2020-11-22 13:00:23,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:00:23,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-22 13:00:23,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 179. [2020-11-22 13:00:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-11-22 13:00:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 258 transitions. [2020-11-22 13:00:23,458 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 258 transitions. Word has length 20 [2020-11-22 13:00:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:23,458 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 258 transitions. [2020-11-22 13:00:23,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:00:23,459 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 258 transitions. [2020-11-22 13:00:23,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-22 13:00:23,460 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:23,460 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] [2020-11-22 13:00:23,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:00:23,461 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:23,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:23,461 INFO L82 PathProgramCache]: Analyzing trace with hash -736945551, now seen corresponding path program 1 times [2020-11-22 13:00:23,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:23,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123625814] [2020-11-22 13:00:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:23,536 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 13:00:23,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123625814] [2020-11-22 13:00:23,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:23,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:23,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955825097] [2020-11-22 13:00:23,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:00:23,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:23,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:00:23,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:00:23,539 INFO L87 Difference]: Start difference. First operand 179 states and 258 transitions. Second operand 4 states. [2020-11-22 13:00:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:23,641 INFO L93 Difference]: Finished difference Result 524 states and 764 transitions. [2020-11-22 13:00:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:00:23,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-22 13:00:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:23,645 INFO L225 Difference]: With dead ends: 524 [2020-11-22 13:00:23,645 INFO L226 Difference]: Without dead ends: 356 [2020-11-22 13:00:23,647 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 13:00:23,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-11-22 13:00:23,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 272. [2020-11-22 13:00:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-11-22 13:00:23,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 395 transitions. [2020-11-22 13:00:23,704 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 395 transitions. Word has length 20 [2020-11-22 13:00:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:23,704 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 395 transitions. [2020-11-22 13:00:23,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:00:23,705 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 395 transitions. [2020-11-22 13:00:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 13:00:23,706 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:23,706 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] [2020-11-22 13:00:23,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:00:23,707 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:23,709 INFO L82 PathProgramCache]: Analyzing trace with hash 67384858, now seen corresponding path program 1 times [2020-11-22 13:00:23,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:23,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460058122] [2020-11-22 13:00:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:23,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460058122] [2020-11-22 13:00:23,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:23,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:23,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130094828] [2020-11-22 13:00:23,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:00:23,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:23,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:00:23,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:00:23,817 INFO L87 Difference]: Start difference. First operand 272 states and 395 transitions. Second operand 4 states. [2020-11-22 13:00:23,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:23,931 INFO L93 Difference]: Finished difference Result 837 states and 1229 transitions. [2020-11-22 13:00:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:00:23,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-22 13:00:23,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:23,936 INFO L225 Difference]: With dead ends: 837 [2020-11-22 13:00:23,936 INFO L226 Difference]: Without dead ends: 576 [2020-11-22 13:00:23,939 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 13:00:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-11-22 13:00:23,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 453. [2020-11-22 13:00:23,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-11-22 13:00:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 657 transitions. [2020-11-22 13:00:23,971 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 657 transitions. Word has length 21 [2020-11-22 13:00:23,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:23,971 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 657 transitions. [2020-11-22 13:00:23,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:00:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 657 transitions. [2020-11-22 13:00:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 13:00:23,972 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:23,973 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] [2020-11-22 13:00:23,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:00:23,973 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:23,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:23,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1995472860, now seen corresponding path program 1 times [2020-11-22 13:00:23,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:23,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230653933] [2020-11-22 13:00:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:24,048 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 13:00:24,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230653933] [2020-11-22 13:00:24,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:24,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:00:24,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566308401] [2020-11-22 13:00:24,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:24,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:24,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:24,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:24,051 INFO L87 Difference]: Start difference. First operand 453 states and 657 transitions. Second operand 3 states. [2020-11-22 13:00:24,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:24,120 INFO L93 Difference]: Finished difference Result 1304 states and 1880 transitions. [2020-11-22 13:00:24,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:24,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-22 13:00:24,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:24,126 INFO L225 Difference]: With dead ends: 1304 [2020-11-22 13:00:24,126 INFO L226 Difference]: Without dead ends: 859 [2020-11-22 13:00:24,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-11-22 13:00:24,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 850. [2020-11-22 13:00:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-11-22 13:00:24,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1189 transitions. [2020-11-22 13:00:24,177 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1189 transitions. Word has length 22 [2020-11-22 13:00:24,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:24,177 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1189 transitions. [2020-11-22 13:00:24,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:24,177 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1189 transitions. [2020-11-22 13:00:24,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-22 13:00:24,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:24,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:24,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:00:24,183 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:24,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:24,184 INFO L82 PathProgramCache]: Analyzing trace with hash -515824487, now seen corresponding path program 1 times [2020-11-22 13:00:24,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:24,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608831450] [2020-11-22 13:00:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:24,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608831450] [2020-11-22 13:00:24,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:24,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:24,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142160157] [2020-11-22 13:00:24,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:24,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:24,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:24,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:24,280 INFO L87 Difference]: Start difference. First operand 850 states and 1189 transitions. Second operand 3 states. [2020-11-22 13:00:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:24,357 INFO L93 Difference]: Finished difference Result 1558 states and 2224 transitions. [2020-11-22 13:00:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:24,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-11-22 13:00:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:24,364 INFO L225 Difference]: With dead ends: 1558 [2020-11-22 13:00:24,365 INFO L226 Difference]: Without dead ends: 1116 [2020-11-22 13:00:24,366 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 13:00:24,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2020-11-22 13:00:24,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 927. [2020-11-22 13:00:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-11-22 13:00:24,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1307 transitions. [2020-11-22 13:00:24,417 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1307 transitions. Word has length 32 [2020-11-22 13:00:24,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:24,418 INFO L481 AbstractCegarLoop]: Abstraction has 927 states and 1307 transitions. [2020-11-22 13:00:24,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:24,418 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1307 transitions. [2020-11-22 13:00:24,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-22 13:00:24,427 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:24,427 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 13:00:24,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:00:24,428 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:24,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:24,429 INFO L82 PathProgramCache]: Analyzing trace with hash -953374991, now seen corresponding path program 1 times [2020-11-22 13:00:24,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:24,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846872984] [2020-11-22 13:00:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 13:00:24,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846872984] [2020-11-22 13:00:24,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:24,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:00:24,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181589100] [2020-11-22 13:00:24,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:24,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:24,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:24,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:24,513 INFO L87 Difference]: Start difference. First operand 927 states and 1307 transitions. Second operand 3 states. [2020-11-22 13:00:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:24,609 INFO L93 Difference]: Finished difference Result 1468 states and 2091 transitions. [2020-11-22 13:00:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:24,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-11-22 13:00:24,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:24,616 INFO L225 Difference]: With dead ends: 1468 [2020-11-22 13:00:24,616 INFO L226 Difference]: Without dead ends: 949 [2020-11-22 13:00:24,617 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 13:00:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-11-22 13:00:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 927. [2020-11-22 13:00:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-11-22 13:00:24,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1294 transitions. [2020-11-22 13:00:24,689 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1294 transitions. Word has length 44 [2020-11-22 13:00:24,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:24,689 INFO L481 AbstractCegarLoop]: Abstraction has 927 states and 1294 transitions. [2020-11-22 13:00:24,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:24,690 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1294 transitions. [2020-11-22 13:00:24,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-22 13:00:24,692 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:24,692 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 13:00:24,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:00:24,692 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:24,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:24,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1826213646, now seen corresponding path program 1 times [2020-11-22 13:00:24,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:24,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94907997] [2020-11-22 13:00:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:24,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94907997] [2020-11-22 13:00:24,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:24,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:24,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751983654] [2020-11-22 13:00:24,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:24,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:24,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:24,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:24,742 INFO L87 Difference]: Start difference. First operand 927 states and 1294 transitions. Second operand 3 states. [2020-11-22 13:00:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:24,825 INFO L93 Difference]: Finished difference Result 1446 states and 2043 transitions. [2020-11-22 13:00:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:24,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-11-22 13:00:24,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:24,832 INFO L225 Difference]: With dead ends: 1446 [2020-11-22 13:00:24,832 INFO L226 Difference]: Without dead ends: 927 [2020-11-22 13:00:24,833 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 13:00:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-11-22 13:00:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 911. [2020-11-22 13:00:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-11-22 13:00:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1236 transitions. [2020-11-22 13:00:24,888 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1236 transitions. Word has length 44 [2020-11-22 13:00:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:24,888 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 1236 transitions. [2020-11-22 13:00:24,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1236 transitions. [2020-11-22 13:00:24,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-22 13:00:24,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:24,891 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 13:00:24,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:00:24,891 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:24,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1992122171, now seen corresponding path program 1 times [2020-11-22 13:00:24,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:24,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696342639] [2020-11-22 13:00:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:25,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696342639] [2020-11-22 13:00:25,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:25,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:00:25,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220119952] [2020-11-22 13:00:25,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:00:25,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:25,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:00:25,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:00:25,029 INFO L87 Difference]: Start difference. First operand 911 states and 1236 transitions. Second operand 4 states. [2020-11-22 13:00:25,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:25,210 INFO L93 Difference]: Finished difference Result 1872 states and 2528 transitions. [2020-11-22 13:00:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:00:25,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-11-22 13:00:25,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:25,218 INFO L225 Difference]: With dead ends: 1872 [2020-11-22 13:00:25,219 INFO L226 Difference]: Without dead ends: 1455 [2020-11-22 13:00:25,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 13:00:25,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-11-22 13:00:25,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1238. [2020-11-22 13:00:25,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2020-11-22 13:00:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1652 transitions. [2020-11-22 13:00:25,283 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1652 transitions. Word has length 45 [2020-11-22 13:00:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:25,283 INFO L481 AbstractCegarLoop]: Abstraction has 1238 states and 1652 transitions. [2020-11-22 13:00:25,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:00:25,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1652 transitions. [2020-11-22 13:00:25,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-22 13:00:25,286 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:25,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:25,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:00:25,286 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:25,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:25,287 INFO L82 PathProgramCache]: Analyzing trace with hash 383860720, now seen corresponding path program 1 times [2020-11-22 13:00:25,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:25,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588069199] [2020-11-22 13:00:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:25,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588069199] [2020-11-22 13:00:25,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:25,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:25,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661653232] [2020-11-22 13:00:25,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:25,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:25,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:25,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:25,329 INFO L87 Difference]: Start difference. First operand 1238 states and 1652 transitions. Second operand 3 states. [2020-11-22 13:00:25,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:25,431 INFO L93 Difference]: Finished difference Result 2509 states and 3383 transitions. [2020-11-22 13:00:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:25,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-11-22 13:00:25,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:25,440 INFO L225 Difference]: With dead ends: 2509 [2020-11-22 13:00:25,440 INFO L226 Difference]: Without dead ends: 1391 [2020-11-22 13:00:25,442 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 13:00:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-11-22 13:00:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1288. [2020-11-22 13:00:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2020-11-22 13:00:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1728 transitions. [2020-11-22 13:00:25,532 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1728 transitions. Word has length 46 [2020-11-22 13:00:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:25,532 INFO L481 AbstractCegarLoop]: Abstraction has 1288 states and 1728 transitions. [2020-11-22 13:00:25,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:25,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1728 transitions. [2020-11-22 13:00:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-22 13:00:25,536 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:25,536 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 13:00:25,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 13:00:25,537 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:25,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:25,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1081595277, now seen corresponding path program 1 times [2020-11-22 13:00:25,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:25,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618428145] [2020-11-22 13:00:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-22 13:00:25,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618428145] [2020-11-22 13:00:25,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140794823] [2020-11-22 13:00:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/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 13:00:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:25,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-22 13:00:25,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:00:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 13:00:25,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:00:25,885 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-22 13:00:25,885 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:00:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 13:00:25,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:00:25,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5] total 9 [2020-11-22 13:00:25,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471717371] [2020-11-22 13:00:25,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:00:25,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:25,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:00:25,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:00:25,926 INFO L87 Difference]: Start difference. First operand 1288 states and 1728 transitions. Second operand 6 states. [2020-11-22 13:00:26,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:26,023 INFO L93 Difference]: Finished difference Result 1686 states and 2275 transitions. [2020-11-22 13:00:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:00:26,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-11-22 13:00:26,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:26,033 INFO L225 Difference]: With dead ends: 1686 [2020-11-22 13:00:26,033 INFO L226 Difference]: Without dead ends: 1253 [2020-11-22 13:00:26,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:00:26,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-11-22 13:00:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1251. [2020-11-22 13:00:26,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1251 states. [2020-11-22 13:00:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1666 transitions. [2020-11-22 13:00:26,142 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1666 transitions. Word has length 48 [2020-11-22 13:00:26,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:26,142 INFO L481 AbstractCegarLoop]: Abstraction has 1251 states and 1666 transitions. [2020-11-22 13:00:26,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:00:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1666 transitions. [2020-11-22 13:00:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-22 13:00:26,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:26,145 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 13:00:26,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-22 13:00:26,370 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:26,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:26,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1585623335, now seen corresponding path program 1 times [2020-11-22 13:00:26,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:26,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568854464] [2020-11-22 13:00:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:26,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568854464] [2020-11-22 13:00:26,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:26,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:26,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582799998] [2020-11-22 13:00:26,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:26,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:26,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:26,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:26,443 INFO L87 Difference]: Start difference. First operand 1251 states and 1666 transitions. Second operand 3 states. [2020-11-22 13:00:26,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:26,527 INFO L93 Difference]: Finished difference Result 2092 states and 2816 transitions. [2020-11-22 13:00:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:26,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-11-22 13:00:26,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:26,533 INFO L225 Difference]: With dead ends: 2092 [2020-11-22 13:00:26,533 INFO L226 Difference]: Without dead ends: 924 [2020-11-22 13:00:26,535 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 13:00:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-11-22 13:00:26,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 920. [2020-11-22 13:00:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 920 states. [2020-11-22 13:00:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1193 transitions. [2020-11-22 13:00:26,583 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1193 transitions. Word has length 59 [2020-11-22 13:00:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:26,584 INFO L481 AbstractCegarLoop]: Abstraction has 920 states and 1193 transitions. [2020-11-22 13:00:26,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1193 transitions. [2020-11-22 13:00:26,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-22 13:00:26,586 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:26,587 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 13:00:26,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 13:00:26,587 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:26,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:26,587 INFO L82 PathProgramCache]: Analyzing trace with hash -297428806, now seen corresponding path program 1 times [2020-11-22 13:00:26,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:26,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595925978] [2020-11-22 13:00:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:26,639 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 13:00:26,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595925978] [2020-11-22 13:00:26,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:26,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:26,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679456317] [2020-11-22 13:00:26,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:26,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:26,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:26,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:26,642 INFO L87 Difference]: Start difference. First operand 920 states and 1193 transitions. Second operand 3 states. [2020-11-22 13:00:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:26,740 INFO L93 Difference]: Finished difference Result 1584 states and 2070 transitions. [2020-11-22 13:00:26,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:26,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-11-22 13:00:26,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:26,746 INFO L225 Difference]: With dead ends: 1584 [2020-11-22 13:00:26,746 INFO L226 Difference]: Without dead ends: 920 [2020-11-22 13:00:26,747 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 13:00:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-11-22 13:00:26,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2020-11-22 13:00:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 920 states. [2020-11-22 13:00:26,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1163 transitions. [2020-11-22 13:00:26,798 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1163 transitions. Word has length 59 [2020-11-22 13:00:26,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:26,799 INFO L481 AbstractCegarLoop]: Abstraction has 920 states and 1163 transitions. [2020-11-22 13:00:26,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:26,799 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1163 transitions. [2020-11-22 13:00:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-22 13:00:26,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:26,801 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 13:00:26,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-22 13:00:26,801 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:26,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1068002938, now seen corresponding path program 1 times [2020-11-22 13:00:26,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:26,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862049323] [2020-11-22 13:00:26,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-22 13:00:26,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862049323] [2020-11-22 13:00:26,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:26,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:00:26,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510619350] [2020-11-22 13:00:26,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:26,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:26,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:26,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:26,883 INFO L87 Difference]: Start difference. First operand 920 states and 1163 transitions. Second operand 3 states. [2020-11-22 13:00:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:27,011 INFO L93 Difference]: Finished difference Result 2466 states and 3151 transitions. [2020-11-22 13:00:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:27,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-11-22 13:00:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:27,020 INFO L225 Difference]: With dead ends: 2466 [2020-11-22 13:00:27,021 INFO L226 Difference]: Without dead ends: 1629 [2020-11-22 13:00:27,023 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 13:00:27,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-11-22 13:00:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1625. [2020-11-22 13:00:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1625 states. [2020-11-22 13:00:27,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2050 transitions. [2020-11-22 13:00:27,144 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2050 transitions. Word has length 60 [2020-11-22 13:00:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:27,145 INFO L481 AbstractCegarLoop]: Abstraction has 1625 states and 2050 transitions. [2020-11-22 13:00:27,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2050 transitions. [2020-11-22 13:00:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-22 13:00:27,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:27,148 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 13:00:27,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-22 13:00:27,149 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:27,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2050360039, now seen corresponding path program 1 times [2020-11-22 13:00:27,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:27,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829696800] [2020-11-22 13:00:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 13:00:27,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829696800] [2020-11-22 13:00:27,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:27,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:27,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163503692] [2020-11-22 13:00:27,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:27,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:27,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:27,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:27,211 INFO L87 Difference]: Start difference. First operand 1625 states and 2050 transitions. Second operand 3 states. [2020-11-22 13:00:27,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:27,362 INFO L93 Difference]: Finished difference Result 3753 states and 4736 transitions. [2020-11-22 13:00:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:27,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-11-22 13:00:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:27,375 INFO L225 Difference]: With dead ends: 3753 [2020-11-22 13:00:27,375 INFO L226 Difference]: Without dead ends: 2265 [2020-11-22 13:00:27,378 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 13:00:27,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2020-11-22 13:00:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2129. [2020-11-22 13:00:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2129 states. [2020-11-22 13:00:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 2596 transitions. [2020-11-22 13:00:27,550 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 2596 transitions. Word has length 60 [2020-11-22 13:00:27,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:27,551 INFO L481 AbstractCegarLoop]: Abstraction has 2129 states and 2596 transitions. [2020-11-22 13:00:27,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 2596 transitions. [2020-11-22 13:00:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-22 13:00:27,555 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:27,555 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 13:00:27,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-22 13:00:27,555 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:27,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:27,556 INFO L82 PathProgramCache]: Analyzing trace with hash 298137967, now seen corresponding path program 1 times [2020-11-22 13:00:27,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:27,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122436769] [2020-11-22 13:00:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:00:27,594 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:00:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:00:27,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:00:27,678 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:00:27,680 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:00:27,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-22 13:00:27,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:00:27 BoogieIcfgContainer [2020-11-22 13:00:27,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:00:27,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:00:27,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:00:27,797 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:00:27,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:22" (3/4) ... [2020-11-22 13:00:27,799 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:00:27,934 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f36a5340-943d-4e13-87ba-47018a4d8701/bin/utaipan/witness.graphml [2020-11-22 13:00:27,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:00:27,947 INFO L168 Benchmark]: Toolchain (without parser) took 7714.85 ms. Allocated memory was 88.1 MB in the beginning and 239.1 MB in the end (delta: 151.0 MB). Free memory was 58.4 MB in the beginning and 149.1 MB in the end (delta: -90.7 MB). Peak memory consumption was 59.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:27,948 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 44.7 MB in the beginning and 44.7 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:00:27,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.65 ms. Allocated memory is still 88.1 MB. Free memory was 58.2 MB in the beginning and 63.3 MB in the end (delta: -5.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:27,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.44 ms. Allocated memory is still 88.1 MB. Free memory was 62.9 MB in the beginning and 60.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:27,953 INFO L168 Benchmark]: Boogie Preprocessor took 56.00 ms. Allocated memory is still 88.1 MB. Free memory was 60.3 MB in the beginning and 57.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:27,953 INFO L168 Benchmark]: RCFGBuilder took 1904.11 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 57.9 MB in the beginning and 60.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:27,954 INFO L168 Benchmark]: TraceAbstraction took 4992.81 ms. Allocated memory was 109.1 MB in the beginning and 239.1 MB in the end (delta: 130.0 MB). Free memory was 60.0 MB in the beginning and 159.6 MB in the end (delta: -99.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:27,954 INFO L168 Benchmark]: Witness Printer took 149.65 ms. Allocated memory is still 239.1 MB. Free memory was 159.6 MB in the beginning and 149.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:27,956 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 44.7 MB in the beginning and 44.7 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 519.65 ms. Allocated memory is still 88.1 MB. Free memory was 58.2 MB in the beginning and 63.3 MB in the end (delta: -5.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.44 ms. Allocated memory is still 88.1 MB. Free memory was 62.9 MB in the beginning and 60.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.00 ms. Allocated memory is still 88.1 MB. Free memory was 60.3 MB in the beginning and 57.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1904.11 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 57.9 MB in the beginning and 60.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4992.81 ms. Allocated memory was 109.1 MB in the beginning and 239.1 MB in the end (delta: 130.0 MB). Free memory was 60.0 MB in the beginning and 159.6 MB in the end (delta: -99.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. * Witness Printer took 149.65 ms. Allocated memory is still 239.1 MB. Free memory was 159.6 MB in the beginning and 149.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int m_pc = 0; [L18] int t1_pc = 0; [L19] int t2_pc = 0; [L20] int m_st ; [L21] int t1_st ; [L22] int t2_st ; [L23] int m_i ; [L24] int t1_i ; [L25] int t2_i ; [L26] int M_E = 2; [L27] int T1_E = 2; [L28] int T2_E = 2; [L29] int E_1 = 2; [L30] int E_2 = 2; [L565] int __retres1 ; [L479] m_i = 1 [L480] t1_i = 1 [L481] t2_i = 1 [L506] int kernel_st ; [L507] int tmp ; [L508] int tmp___0 ; [L512] kernel_st = 0 [L213] COND TRUE m_i == 1 [L214] m_st = 0 [L218] COND TRUE t1_i == 1 [L219] t1_st = 0 [L223] COND TRUE t2_i == 1 [L224] t2_st = 0 [L326] COND FALSE !(M_E == 0) [L331] COND FALSE !(T1_E == 0) [L336] COND FALSE !(T2_E == 0) [L341] COND FALSE !(E_1 == 0) [L346] COND FALSE !(E_2 == 0) [L389] int tmp ; [L390] int tmp___0 ; [L391] int tmp___1 ; [L145] int __retres1 ; VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L148] COND FALSE !(m_pc == 1) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L158] __retres1 = 0 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L160] return (__retres1); [L395] tmp = is_master_triggered() [L397] COND FALSE !(\read(tmp)) [L164] int __retres1 ; VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L167] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L177] __retres1 = 0 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L179] return (__retres1); [L403] tmp___0 = is_transmit1_triggered() [L405] COND FALSE !(\read(tmp___0)) [L183] int __retres1 ; VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L186] COND FALSE !(t2_pc == 1) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L196] __retres1 = 0 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L198] return (__retres1); [L411] tmp___1 = is_transmit2_triggered() [L413] COND FALSE !(\read(tmp___1)) [L359] COND FALSE !(M_E == 1) [L364] COND FALSE !(T1_E == 1) [L369] COND FALSE !(T2_E == 1) [L374] COND FALSE !(E_1 == 1) [L379] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L520] COND TRUE 1 [L523] kernel_st = 1 [L259] int tmp ; VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L263] COND TRUE 1 [L233] int __retres1 ; [L236] COND TRUE m_st == 0 [L237] __retres1 = 1 [L254] return (__retres1); [L266] tmp = exists_runnable_thread() [L268] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L273] COND TRUE m_st == 0 [L274] int tmp_ndt_1; [L275] tmp_ndt_1 = __VERIFIER_nondet_int() [L276] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L287] COND TRUE t1_st == 0 [L288] int tmp_ndt_2; [L289] tmp_ndt_2 = __VERIFIER_nondet_int() [L290] COND TRUE \read(tmp_ndt_2) [L292] t1_st = 1 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L80] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L91] COND TRUE 1 [L93] t1_pc = 1 [L94] t1_st = 2 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L301] COND TRUE t2_st == 0 [L302] int tmp_ndt_3; [L303] tmp_ndt_3 = __VERIFIER_nondet_int() [L304] COND TRUE \read(tmp_ndt_3) [L306] t2_st = 1 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1] [L115] COND TRUE t2_pc == 0 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1] [L126] COND TRUE 1 [L128] t2_pc = 1 [L129] t2_st = 2 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L263] COND TRUE 1 [L233] int __retres1 ; [L236] COND TRUE m_st == 0 [L237] __retres1 = 1 [L254] return (__retres1); [L266] tmp = exists_runnable_thread() [L268] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L273] COND TRUE m_st == 0 [L274] int tmp_ndt_1; [L275] tmp_ndt_1 = __VERIFIER_nondet_int() [L276] COND TRUE \read(tmp_ndt_1) [L278] m_st = 1 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L39] COND TRUE m_pc == 0 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L50] COND TRUE 1 [L53] E_1 = 1 [L389] int tmp ; [L390] int tmp___0 ; [L391] int tmp___1 ; [L145] int __retres1 ; VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L148] COND FALSE !(m_pc == 1) VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L158] __retres1 = 0 VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L160] return (__retres1); [L395] tmp = is_master_triggered() [L397] COND FALSE !(\read(tmp)) [L164] int __retres1 ; VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L167] COND TRUE t1_pc == 1 VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L168] COND TRUE E_1 == 1 [L169] __retres1 = 1 VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L179] return (__retres1); [L403] tmp___0 = is_transmit1_triggered() [L405] COND TRUE \read(tmp___0) [L406] t1_st = 0 [L183] int __retres1 ; VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L186] COND TRUE t2_pc == 1 VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L187] COND FALSE !(E_2 == 1) VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L196] __retres1 = 0 VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L198] return (__retres1); [L411] tmp___1 = is_transmit2_triggered() [L413] COND FALSE !(\read(tmp___1)) [L55] E_1 = 2 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L58] COND TRUE 1 [L60] m_pc = 1 [L61] m_st = 2 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L287] COND TRUE t1_st == 0 [L288] int tmp_ndt_2; [L289] tmp_ndt_2 = __VERIFIER_nondet_int() [L290] COND TRUE \read(tmp_ndt_2) [L292] t1_st = 1 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L80] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L83] COND TRUE t1_pc == 1 [L99] E_2 = 1 [L389] int tmp ; [L390] int tmp___0 ; [L391] int tmp___1 ; [L145] int __retres1 ; VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L148] COND TRUE m_pc == 1 VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L149] COND FALSE !(M_E == 1) VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L158] __retres1 = 0 VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L160] return (__retres1); [L395] tmp = is_master_triggered() [L397] COND FALSE !(\read(tmp)) [L164] int __retres1 ; VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L167] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L168] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L177] __retres1 = 0 VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L179] return (__retres1); [L403] tmp___0 = is_transmit1_triggered() [L405] COND FALSE !(\read(tmp___0)) [L183] int __retres1 ; VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L186] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L187] COND TRUE E_2 == 1 [L188] __retres1 = 1 VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L198] return (__retres1); [L411] tmp___1 = is_transmit2_triggered() [L413] COND TRUE \read(tmp___1) [L414] t2_st = 0 [L101] E_2 = 2 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0] [L91] COND TRUE 1 [L93] t1_pc = 1 [L94] t1_st = 2 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=0] [L301] COND TRUE t2_st == 0 [L302] int tmp_ndt_3; [L303] tmp_ndt_3 = __VERIFIER_nondet_int() [L304] COND TRUE \read(tmp_ndt_3) [L306] t2_st = 1 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1] [L115] COND FALSE !(t2_pc == 0) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1] [L118] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1] [L3] __assert_fail("0", "transmitter.02.cil.c", 3, "reach_error") VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2070 SDtfs, 1621 SDslu, 1464 SDs, 0 SdLazy, 314 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2129occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 933 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 689 NumberOfCodeBlocks, 689 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 660 ConstructedInterpolants, 0 QuantifiedInterpolants, 64931 SizeOfPredicates, 5 NumberOfNonLiveVariables, 251 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 16 InterpolantComputations, 15 PerfectInterpolantSequences, 132/133 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 incorrect! Received shutdown request...