./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_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.02.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/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 [2020-11-28 07:33:34,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:33:34,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:33:34,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:33:34,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:33:34,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:33:34,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:33:34,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:33:34,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:33:34,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:33:34,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:33:34,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:33:34,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:33:34,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:33:34,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:33:34,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:33:34,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:33:34,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:33:34,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:33:34,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:33:34,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:33:34,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:33:34,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:33:34,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:33:34,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:33:34,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:33:34,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:33:34,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:33:34,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:33:34,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:33:34,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:33:34,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:33:34,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:33:34,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:33:34,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:33:34,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:33:34,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:33:34,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:33:34,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:33:34,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:33:34,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:33:34,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:33:34,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:33:34,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:33:34,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:33:34,951 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:33:34,951 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:33:34,951 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:33:34,952 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:33:34,952 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:33:34,952 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:33:34,952 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:33:34,953 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:33:34,953 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:33:34,953 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:33:34,953 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:33:34,953 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:33:34,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:33:34,954 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:33:34,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:33:34,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:33:34,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:33:34,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:33:34,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:33:34,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:33:34,956 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:33:34,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:33:34,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:33:34,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:33:34,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:33:34,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:33:34,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:33:34,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:33:34,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:33:34,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:33:34,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:33:34,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:33:34,958 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:33:34,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:33:34,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:33:34,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:33:34,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:33:34,959 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_2ebc3e33-7d66-46b9-89b2-55c0fa432831/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c6676c90977e408adf03f66d7ae0804453cb34e [2020-11-28 07:33:35,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:33:35,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:33:35,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:33:35,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:33:35,255 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:33:35,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/../../sv-benchmarks/c/systemc/transmitter.02.cil.c [2020-11-28 07:33:35,326 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/data/c837b2c52/90c3f1808cd94acda1e3b7f71d9c2d0b/FLAG96cb616b1 [2020-11-28 07:33:35,749 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:33:35,750 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/sv-benchmarks/c/systemc/transmitter.02.cil.c [2020-11-28 07:33:35,759 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/data/c837b2c52/90c3f1808cd94acda1e3b7f71d9c2d0b/FLAG96cb616b1 [2020-11-28 07:33:36,135 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/data/c837b2c52/90c3f1808cd94acda1e3b7f71d9c2d0b [2020-11-28 07:33:36,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:33:36,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:33:36,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:36,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:33:36,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:33:36,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:36" (1/1) ... [2020-11-28 07:33:36,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4549a2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36, skipping insertion in model container [2020-11-28 07:33:36,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:36" (1/1) ... [2020-11-28 07:33:36,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:33:36,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:33:36,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:36,442 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:33:36,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:36,530 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:33:36,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36 WrapperNode [2020-11-28 07:33:36,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:36,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:33:36,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:33:36,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:33:36,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36" (1/1) ... [2020-11-28 07:33:36,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36" (1/1) ... [2020-11-28 07:33:36,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:33:36,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:33:36,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:33:36,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:33:36,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36" (1/1) ... [2020-11-28 07:33:36,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36" (1/1) ... [2020-11-28 07:33:36,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36" (1/1) ... [2020-11-28 07:33:36,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36" (1/1) ... [2020-11-28 07:33:36,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36" (1/1) ... [2020-11-28 07:33:36,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36" (1/1) ... [2020-11-28 07:33:36,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36" (1/1) ... [2020-11-28 07:33:36,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:33:36,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:33:36,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:33:36,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:33:36,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:33:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:33:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:33:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:33:36,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:33:38,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:33:38,477 INFO L298 CfgBuilder]: Removed 96 assume(true) statements. [2020-11-28 07:33:38,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:38 BoogieIcfgContainer [2020-11-28 07:33:38,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:33:38,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:33:38,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:33:38,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:33:38,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:33:36" (1/3) ... [2020-11-28 07:33:38,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3902b5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:33:38, skipping insertion in model container [2020-11-28 07:33:38,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:36" (2/3) ... [2020-11-28 07:33:38,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3902b5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:33:38, skipping insertion in model container [2020-11-28 07:33:38,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:38" (3/3) ... [2020-11-28 07:33:38,489 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-11-28 07:33:38,503 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:33:38,508 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:33:38,521 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:33:38,559 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:33:38,559 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:33:38,559 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:33:38,560 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:33:38,560 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:33:38,560 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:33:38,560 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:33:38,560 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:33:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-11-28 07:33:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 07:33:38,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:38,596 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] [2020-11-28 07:33:38,597 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:38,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1913549870, now seen corresponding path program 1 times [2020-11-28 07:33:38,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:38,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753161709] [2020-11-28 07:33:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:38,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753161709] [2020-11-28 07:33:38,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:38,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:38,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505868931] [2020-11-28 07:33:38,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:38,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:38,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:38,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:38,828 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-11-28 07:33:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:39,037 INFO L93 Difference]: Finished difference Result 295 states and 453 transitions. [2020-11-28 07:33:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:33:39,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-28 07:33:39,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:39,051 INFO L225 Difference]: With dead ends: 295 [2020-11-28 07:33:39,051 INFO L226 Difference]: Without dead ends: 203 [2020-11-28 07:33:39,054 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 [2020-11-28 07:33:39,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-28 07:33:39,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 179. [2020-11-28 07:33:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-11-28 07:33:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 258 transitions. [2020-11-28 07:33:39,126 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 258 transitions. Word has length 20 [2020-11-28 07:33:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:39,127 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 258 transitions. [2020-11-28 07:33:39,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 258 transitions. [2020-11-28 07:33:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 07:33:39,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:39,129 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] [2020-11-28 07:33:39,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:33:39,129 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:39,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:39,130 INFO L82 PathProgramCache]: Analyzing trace with hash -736945551, now seen corresponding path program 1 times [2020-11-28 07:33:39,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:39,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691880926] [2020-11-28 07:33:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:39,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691880926] [2020-11-28 07:33:39,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:39,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:39,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678218820] [2020-11-28 07:33:39,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:39,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:39,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:39,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:39,255 INFO L87 Difference]: Start difference. First operand 179 states and 258 transitions. Second operand 4 states. [2020-11-28 07:33:39,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:39,382 INFO L93 Difference]: Finished difference Result 524 states and 764 transitions. [2020-11-28 07:33:39,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:33:39,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-28 07:33:39,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:39,387 INFO L225 Difference]: With dead ends: 524 [2020-11-28 07:33:39,388 INFO L226 Difference]: Without dead ends: 356 [2020-11-28 07:33:39,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-11-28 07:33:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 272. [2020-11-28 07:33:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-11-28 07:33:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 395 transitions. [2020-11-28 07:33:39,437 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 395 transitions. Word has length 20 [2020-11-28 07:33:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:39,437 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 395 transitions. [2020-11-28 07:33:39,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 395 transitions. [2020-11-28 07:33:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:33:39,438 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:39,439 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] [2020-11-28 07:33:39,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:33:39,439 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:39,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:39,440 INFO L82 PathProgramCache]: Analyzing trace with hash 67384858, now seen corresponding path program 1 times [2020-11-28 07:33:39,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:39,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433754348] [2020-11-28 07:33:39,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:39,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433754348] [2020-11-28 07:33:39,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:39,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:39,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306850335] [2020-11-28 07:33:39,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:39,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:39,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:39,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:39,538 INFO L87 Difference]: Start difference. First operand 272 states and 395 transitions. Second operand 4 states. [2020-11-28 07:33:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:39,645 INFO L93 Difference]: Finished difference Result 837 states and 1229 transitions. [2020-11-28 07:33:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:33:39,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-28 07:33:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:39,650 INFO L225 Difference]: With dead ends: 837 [2020-11-28 07:33:39,650 INFO L226 Difference]: Without dead ends: 576 [2020-11-28 07:33:39,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-11-28 07:33:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 453. [2020-11-28 07:33:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-11-28 07:33:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 657 transitions. [2020-11-28 07:33:39,694 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 657 transitions. Word has length 21 [2020-11-28 07:33:39,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:39,695 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 657 transitions. [2020-11-28 07:33:39,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:39,695 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 657 transitions. [2020-11-28 07:33:39,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 07:33:39,697 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:39,697 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] [2020-11-28 07:33:39,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:33:39,697 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:39,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:39,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1995472860, now seen corresponding path program 1 times [2020-11-28 07:33:39,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:39,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173775957] [2020-11-28 07:33:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:39,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173775957] [2020-11-28 07:33:39,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:39,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:33:39,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125417052] [2020-11-28 07:33:39,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:33:39,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:39,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:33:39,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:39,791 INFO L87 Difference]: Start difference. First operand 453 states and 657 transitions. Second operand 3 states. [2020-11-28 07:33:39,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:39,874 INFO L93 Difference]: Finished difference Result 1304 states and 1880 transitions. [2020-11-28 07:33:39,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:33:39,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 07:33:39,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:39,884 INFO L225 Difference]: With dead ends: 1304 [2020-11-28 07:33:39,884 INFO L226 Difference]: Without dead ends: 859 [2020-11-28 07:33:39,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:39,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-11-28 07:33:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 850. [2020-11-28 07:33:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-11-28 07:33:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1189 transitions. [2020-11-28 07:33:39,939 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1189 transitions. Word has length 22 [2020-11-28 07:33:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:39,940 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1189 transitions. [2020-11-28 07:33:39,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:33:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1189 transitions. [2020-11-28 07:33:39,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 07:33:39,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:39,949 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] [2020-11-28 07:33:39,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:33:39,950 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:39,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:39,951 INFO L82 PathProgramCache]: Analyzing trace with hash -515824487, now seen corresponding path program 1 times [2020-11-28 07:33:39,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:39,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442756904] [2020-11-28 07:33:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:40,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442756904] [2020-11-28 07:33:40,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:40,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:40,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367282879] [2020-11-28 07:33:40,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:33:40,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:40,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:33:40,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:40,044 INFO L87 Difference]: Start difference. First operand 850 states and 1189 transitions. Second operand 3 states. [2020-11-28 07:33:40,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:40,120 INFO L93 Difference]: Finished difference Result 1558 states and 2224 transitions. [2020-11-28 07:33:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:33:40,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-11-28 07:33:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:40,129 INFO L225 Difference]: With dead ends: 1558 [2020-11-28 07:33:40,130 INFO L226 Difference]: Without dead ends: 1116 [2020-11-28 07:33:40,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:40,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2020-11-28 07:33:40,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 927. [2020-11-28 07:33:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-11-28 07:33:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1307 transitions. [2020-11-28 07:33:40,182 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1307 transitions. Word has length 32 [2020-11-28 07:33:40,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:40,183 INFO L481 AbstractCegarLoop]: Abstraction has 927 states and 1307 transitions. [2020-11-28 07:33:40,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:33:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1307 transitions. [2020-11-28 07:33:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 07:33:40,188 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:40,189 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] [2020-11-28 07:33:40,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:33:40,190 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:40,191 INFO L82 PathProgramCache]: Analyzing trace with hash -953374991, now seen corresponding path program 1 times [2020-11-28 07:33:40,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:40,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697511596] [2020-11-28 07:33:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:33:40,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697511596] [2020-11-28 07:33:40,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:40,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:33:40,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041961668] [2020-11-28 07:33:40,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:33:40,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:40,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:33:40,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:40,305 INFO L87 Difference]: Start difference. First operand 927 states and 1307 transitions. Second operand 3 states. [2020-11-28 07:33:40,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:40,379 INFO L93 Difference]: Finished difference Result 1468 states and 2091 transitions. [2020-11-28 07:33:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:33:40,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-11-28 07:33:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:40,389 INFO L225 Difference]: With dead ends: 1468 [2020-11-28 07:33:40,389 INFO L226 Difference]: Without dead ends: 949 [2020-11-28 07:33:40,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:40,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-11-28 07:33:40,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 927. [2020-11-28 07:33:40,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-11-28 07:33:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1294 transitions. [2020-11-28 07:33:40,447 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1294 transitions. Word has length 44 [2020-11-28 07:33:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:40,448 INFO L481 AbstractCegarLoop]: Abstraction has 927 states and 1294 transitions. [2020-11-28 07:33:40,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:33:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1294 transitions. [2020-11-28 07:33:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 07:33:40,456 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:40,456 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] [2020-11-28 07:33:40,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:33:40,456 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:40,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:40,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1826213646, now seen corresponding path program 1 times [2020-11-28 07:33:40,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:40,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268071630] [2020-11-28 07:33:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:40,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268071630] [2020-11-28 07:33:40,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:40,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:40,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142879764] [2020-11-28 07:33:40,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:33:40,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:40,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:33:40,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:40,526 INFO L87 Difference]: Start difference. First operand 927 states and 1294 transitions. Second operand 3 states. [2020-11-28 07:33:40,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:40,603 INFO L93 Difference]: Finished difference Result 1446 states and 2043 transitions. [2020-11-28 07:33:40,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:33:40,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-11-28 07:33:40,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:40,609 INFO L225 Difference]: With dead ends: 1446 [2020-11-28 07:33:40,610 INFO L226 Difference]: Without dead ends: 927 [2020-11-28 07:33:40,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:40,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-11-28 07:33:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 911. [2020-11-28 07:33:40,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-11-28 07:33:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1236 transitions. [2020-11-28 07:33:40,684 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1236 transitions. Word has length 44 [2020-11-28 07:33:40,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:40,684 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 1236 transitions. [2020-11-28 07:33:40,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:33:40,685 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1236 transitions. [2020-11-28 07:33:40,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 07:33:40,687 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:40,687 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] [2020-11-28 07:33:40,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:33:40,687 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:40,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:40,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1992122171, now seen corresponding path program 1 times [2020-11-28 07:33:40,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:40,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609439370] [2020-11-28 07:33:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:40,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609439370] [2020-11-28 07:33:40,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:40,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:33:40,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112239973] [2020-11-28 07:33:40,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:40,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:40,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:40,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:40,787 INFO L87 Difference]: Start difference. First operand 911 states and 1236 transitions. Second operand 4 states. [2020-11-28 07:33:40,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:40,946 INFO L93 Difference]: Finished difference Result 1872 states and 2528 transitions. [2020-11-28 07:33:40,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:33:40,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-11-28 07:33:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:40,954 INFO L225 Difference]: With dead ends: 1872 [2020-11-28 07:33:40,954 INFO L226 Difference]: Without dead ends: 1455 [2020-11-28 07:33:40,956 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 [2020-11-28 07:33:40,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-11-28 07:33:41,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1238. [2020-11-28 07:33:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2020-11-28 07:33:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1652 transitions. [2020-11-28 07:33:41,047 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1652 transitions. Word has length 45 [2020-11-28 07:33:41,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:41,050 INFO L481 AbstractCegarLoop]: Abstraction has 1238 states and 1652 transitions. [2020-11-28 07:33:41,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:41,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1652 transitions. [2020-11-28 07:33:41,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-28 07:33:41,054 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:41,054 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] [2020-11-28 07:33:41,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:33:41,056 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:41,057 INFO L82 PathProgramCache]: Analyzing trace with hash 383860720, now seen corresponding path program 1 times [2020-11-28 07:33:41,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:41,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629929317] [2020-11-28 07:33:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:41,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629929317] [2020-11-28 07:33:41,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:41,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:41,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468191362] [2020-11-28 07:33:41,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:33:41,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:41,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:33:41,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:41,128 INFO L87 Difference]: Start difference. First operand 1238 states and 1652 transitions. Second operand 3 states. [2020-11-28 07:33:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:41,241 INFO L93 Difference]: Finished difference Result 2509 states and 3383 transitions. [2020-11-28 07:33:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:33:41,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-11-28 07:33:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:41,249 INFO L225 Difference]: With dead ends: 2509 [2020-11-28 07:33:41,249 INFO L226 Difference]: Without dead ends: 1391 [2020-11-28 07:33:41,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-11-28 07:33:41,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1288. [2020-11-28 07:33:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2020-11-28 07:33:41,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1728 transitions. [2020-11-28 07:33:41,316 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1728 transitions. Word has length 46 [2020-11-28 07:33:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:41,316 INFO L481 AbstractCegarLoop]: Abstraction has 1288 states and 1728 transitions. [2020-11-28 07:33:41,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:33:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1728 transitions. [2020-11-28 07:33:41,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-28 07:33:41,324 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:41,324 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] [2020-11-28 07:33:41,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:33:41,325 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:41,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:41,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1081595277, now seen corresponding path program 1 times [2020-11-28 07:33:41,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:41,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747833072] [2020-11-28 07:33:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:41,391 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:33:41,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747833072] [2020-11-28 07:33:41,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131143749] [2020-11-28 07:33:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:33:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:41,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 07:33:41,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:33:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:33:41,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:33:41,800 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-28 07:33:41,800 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:33:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:33:41,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:33:41,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5] total 9 [2020-11-28 07:33:41,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128699103] [2020-11-28 07:33:41,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:33:41,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:41,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:33:41,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:33:41,840 INFO L87 Difference]: Start difference. First operand 1288 states and 1728 transitions. Second operand 6 states. [2020-11-28 07:33:41,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:41,956 INFO L93 Difference]: Finished difference Result 1686 states and 2275 transitions. [2020-11-28 07:33:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:41,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-11-28 07:33:41,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:41,964 INFO L225 Difference]: With dead ends: 1686 [2020-11-28 07:33:41,964 INFO L226 Difference]: Without dead ends: 1253 [2020-11-28 07:33:41,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:33:41,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-11-28 07:33:42,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1251. [2020-11-28 07:33:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1251 states. [2020-11-28 07:33:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1666 transitions. [2020-11-28 07:33:42,057 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1666 transitions. Word has length 48 [2020-11-28 07:33:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:42,057 INFO L481 AbstractCegarLoop]: Abstraction has 1251 states and 1666 transitions. [2020-11-28 07:33:42,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:33:42,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1666 transitions. [2020-11-28 07:33:42,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-28 07:33:42,059 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:42,060 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] [2020-11-28 07:33:42,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:33:42,274 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:42,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:42,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1585623335, now seen corresponding path program 1 times [2020-11-28 07:33:42,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:42,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510154292] [2020-11-28 07:33:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:42,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510154292] [2020-11-28 07:33:42,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:42,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:42,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098816201] [2020-11-28 07:33:42,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:33:42,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:42,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:33:42,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:42,345 INFO L87 Difference]: Start difference. First operand 1251 states and 1666 transitions. Second operand 3 states. [2020-11-28 07:33:42,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:42,431 INFO L93 Difference]: Finished difference Result 2092 states and 2816 transitions. [2020-11-28 07:33:42,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:33:42,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-11-28 07:33:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:42,437 INFO L225 Difference]: With dead ends: 2092 [2020-11-28 07:33:42,437 INFO L226 Difference]: Without dead ends: 924 [2020-11-28 07:33:42,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:42,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-11-28 07:33:42,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 920. [2020-11-28 07:33:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 920 states. [2020-11-28 07:33:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1193 transitions. [2020-11-28 07:33:42,490 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1193 transitions. Word has length 59 [2020-11-28 07:33:42,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:42,491 INFO L481 AbstractCegarLoop]: Abstraction has 920 states and 1193 transitions. [2020-11-28 07:33:42,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:33:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1193 transitions. [2020-11-28 07:33:42,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-28 07:33:42,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:42,493 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] [2020-11-28 07:33:42,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:33:42,493 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:42,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:42,494 INFO L82 PathProgramCache]: Analyzing trace with hash -297428806, now seen corresponding path program 1 times [2020-11-28 07:33:42,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:42,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075192859] [2020-11-28 07:33:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:33:42,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075192859] [2020-11-28 07:33:42,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:42,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:42,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770052674] [2020-11-28 07:33:42,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:33:42,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:42,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:33:42,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:42,540 INFO L87 Difference]: Start difference. First operand 920 states and 1193 transitions. Second operand 3 states. [2020-11-28 07:33:42,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:42,619 INFO L93 Difference]: Finished difference Result 1584 states and 2070 transitions. [2020-11-28 07:33:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:33:42,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-11-28 07:33:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:42,625 INFO L225 Difference]: With dead ends: 1584 [2020-11-28 07:33:42,625 INFO L226 Difference]: Without dead ends: 920 [2020-11-28 07:33:42,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:42,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-11-28 07:33:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2020-11-28 07:33:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 920 states. [2020-11-28 07:33:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1163 transitions. [2020-11-28 07:33:42,705 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1163 transitions. Word has length 59 [2020-11-28 07:33:42,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:42,705 INFO L481 AbstractCegarLoop]: Abstraction has 920 states and 1163 transitions. [2020-11-28 07:33:42,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:33:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1163 transitions. [2020-11-28 07:33:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-28 07:33:42,707 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:42,707 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] [2020-11-28 07:33:42,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 07:33:42,708 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:42,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1068002938, now seen corresponding path program 1 times [2020-11-28 07:33:42,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:42,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666291824] [2020-11-28 07:33:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 07:33:42,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666291824] [2020-11-28 07:33:42,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:42,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:33:42,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543608658] [2020-11-28 07:33:42,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:33:42,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:42,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:33:42,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:42,793 INFO L87 Difference]: Start difference. First operand 920 states and 1163 transitions. Second operand 3 states. [2020-11-28 07:33:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:42,913 INFO L93 Difference]: Finished difference Result 2466 states and 3151 transitions. [2020-11-28 07:33:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:33:42,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-11-28 07:33:42,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:42,922 INFO L225 Difference]: With dead ends: 2466 [2020-11-28 07:33:42,923 INFO L226 Difference]: Without dead ends: 1629 [2020-11-28 07:33:42,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-11-28 07:33:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1625. [2020-11-28 07:33:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1625 states. [2020-11-28 07:33:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2050 transitions. [2020-11-28 07:33:43,057 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2050 transitions. Word has length 60 [2020-11-28 07:33:43,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:43,057 INFO L481 AbstractCegarLoop]: Abstraction has 1625 states and 2050 transitions. [2020-11-28 07:33:43,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:33:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2050 transitions. [2020-11-28 07:33:43,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-28 07:33:43,060 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:43,060 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] [2020-11-28 07:33:43,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 07:33:43,062 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:43,063 INFO L82 PathProgramCache]: Analyzing trace with hash -2050360039, now seen corresponding path program 1 times [2020-11-28 07:33:43,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:43,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109501533] [2020-11-28 07:33:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:33:43,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109501533] [2020-11-28 07:33:43,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:43,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:43,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12652904] [2020-11-28 07:33:43,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:33:43,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:43,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:33:43,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:43,121 INFO L87 Difference]: Start difference. First operand 1625 states and 2050 transitions. Second operand 3 states. [2020-11-28 07:33:43,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:43,296 INFO L93 Difference]: Finished difference Result 3753 states and 4736 transitions. [2020-11-28 07:33:43,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:33:43,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-11-28 07:33:43,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:43,309 INFO L225 Difference]: With dead ends: 3753 [2020-11-28 07:33:43,309 INFO L226 Difference]: Without dead ends: 2265 [2020-11-28 07:33:43,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:33:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2020-11-28 07:33:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2129. [2020-11-28 07:33:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2129 states. [2020-11-28 07:33:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 2596 transitions. [2020-11-28 07:33:43,465 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 2596 transitions. Word has length 60 [2020-11-28 07:33:43,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:43,465 INFO L481 AbstractCegarLoop]: Abstraction has 2129 states and 2596 transitions. [2020-11-28 07:33:43,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:33:43,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 2596 transitions. [2020-11-28 07:33:43,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-28 07:33:43,469 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:43,469 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] [2020-11-28 07:33:43,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 07:33:43,469 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:43,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:43,470 INFO L82 PathProgramCache]: Analyzing trace with hash 298137967, now seen corresponding path program 1 times [2020-11-28 07:33:43,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:43,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760812230] [2020-11-28 07:33:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:33:43,509 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:33:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:33:43,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:33:43,595 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:33:43,597 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:33:43,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 07:33:43,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:33:43 BoogieIcfgContainer [2020-11-28 07:33:43,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:33:43,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:33:43,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:33:43,748 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:33:43,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:38" (3/4) ... [2020-11-28 07:33:43,750 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:33:43,914 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2ebc3e33-7d66-46b9-89b2-55c0fa432831/bin/utaipan/witness.graphml [2020-11-28 07:33:43,914 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:33:43,916 INFO L168 Benchmark]: Toolchain (without parser) took 7776.79 ms. Allocated memory was 90.2 MB in the beginning and 216.0 MB in the end (delta: 125.8 MB). Free memory was 59.7 MB in the beginning and 150.6 MB in the end (delta: -90.9 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,917 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:33:43,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.34 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 59.5 MB in the beginning and 82.7 MB in the end (delta: -23.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,918 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.99 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 80.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,918 INFO L168 Benchmark]: Boogie Preprocessor took 70.58 ms. Allocated memory is still 109.1 MB. Free memory was 80.0 MB in the beginning and 77.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,918 INFO L168 Benchmark]: RCFGBuilder took 1777.30 ms. Allocated memory is still 109.1 MB. Free memory was 77.4 MB in the beginning and 74.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 49.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,919 INFO L168 Benchmark]: TraceAbstraction took 5265.89 ms. Allocated memory was 109.1 MB in the beginning and 216.0 MB in the end (delta: 107.0 MB). Free memory was 74.5 MB in the beginning and 161.1 MB in the end (delta: -86.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,919 INFO L168 Benchmark]: Witness Printer took 166.97 ms. Allocated memory is still 216.0 MB. Free memory was 161.1 MB in the beginning and 150.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,924 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 90.2 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 395.34 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 59.5 MB in the beginning and 82.7 MB in the end (delta: -23.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.99 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 80.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.58 ms. Allocated memory is still 109.1 MB. Free memory was 80.0 MB in the beginning and 77.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1777.30 ms. Allocated memory is still 109.1 MB. Free memory was 77.4 MB in the beginning and 74.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 49.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5265.89 ms. Allocated memory was 109.1 MB in the beginning and 216.0 MB in the end (delta: 107.0 MB). Free memory was 74.5 MB in the beginning and 161.1 MB in the end (delta: -86.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. * Witness Printer took 166.97 ms. Allocated memory is still 216.0 MB. Free memory was 161.1 MB in the beginning and 150.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 8.4 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: 5.0s, 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, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s 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, 0.9s 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...