./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.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_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8ce463a68003145f68f57eef3f97a99b93a908a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:16:49,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:49,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:50,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:50,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:50,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:50,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:50,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:50,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:50,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:50,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:50,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:50,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:50,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:50,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:50,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:50,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:50,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:50,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:50,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:50,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:50,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:50,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:50,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:50,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:50,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:50,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:50,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:50,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:50,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:50,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:50,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:50,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:50,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:50,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:50,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:50,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:50,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:50,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:50,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:50,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:50,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:16:50,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:50,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:50,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:50,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:50,124 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:50,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:50,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:16:50,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:16:50,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:16:50,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:50,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:16:50,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:16:50,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:16:50,126 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:16:50,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:16:50,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:50,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:16:50,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:50,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:50,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:16:50,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:16:50,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:50,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:50,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:16:50,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:16:50,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:16:50,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:16:50,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:16:50,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:50,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8ce463a68003145f68f57eef3f97a99b93a908a [2020-11-28 03:16:50,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:50,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:50,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:50,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:50,433 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:50,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2020-11-28 03:16:50,544 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/data/228bd087c/44ae9486f4d8443cb92c75eaea858ebf/FLAGaa38aa9f6 [2020-11-28 03:16:51,089 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:51,090 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2020-11-28 03:16:51,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/data/228bd087c/44ae9486f4d8443cb92c75eaea858ebf/FLAGaa38aa9f6 [2020-11-28 03:16:51,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/data/228bd087c/44ae9486f4d8443cb92c75eaea858ebf [2020-11-28 03:16:51,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:51,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:16:51,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:51,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:51,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:51,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570874b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51, skipping insertion in model container [2020-11-28 03:16:51,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:51,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:51,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:51,754 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:51,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:51,802 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:51,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51 WrapperNode [2020-11-28 03:16:51,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:51,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:51,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:51,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:51,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:51,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:51,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:51,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:51,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51" (1/1) ... [2020-11-28 03:16:51,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:51,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:51,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:51,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:51,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/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 03:16:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:16:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-11-28 03:16:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-11-28 03:16:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-11-28 03:16:51,994 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-11-28 03:16:51,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:51,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:52,335 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:52,336 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:16:52,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:52 BoogieIcfgContainer [2020-11-28 03:16:52,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:52,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:16:52,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:16:52,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:16:52,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:16:51" (1/3) ... [2020-11-28 03:16:52,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e253b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:52, skipping insertion in model container [2020-11-28 03:16:52,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:51" (2/3) ... [2020-11-28 03:16:52,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e253b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:52, skipping insertion in model container [2020-11-28 03:16:52,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:52" (3/3) ... [2020-11-28 03:16:52,381 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-11-28 03:16:52,393 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:16:52,424 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:16:52,438 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:16:52,467 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:16:52,468 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:16:52,468 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:16:52,468 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:52,468 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:52,469 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:16:52,469 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:52,469 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:16:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-28 03:16:52,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:16:52,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:52,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:52,495 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:52,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:52,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2146840844, now seen corresponding path program 1 times [2020-11-28 03:16:52,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:52,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268965356] [2020-11-28 03:16:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:52,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:52,800 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 03:16:52,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268965356] [2020-11-28 03:16:52,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:52,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:52,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918807624] [2020-11-28 03:16:52,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:52,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:52,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:52,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:52,837 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-11-28 03:16:52,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:52,951 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-11-28 03:16:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:52,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 03:16:52,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:52,963 INFO L225 Difference]: With dead ends: 40 [2020-11-28 03:16:52,963 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:16:52,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:52,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:16:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 03:16:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:16:53,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-11-28 03:16:53,017 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2020-11-28 03:16:53,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:53,017 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-28 03:16:53,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2020-11-28 03:16:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:16:53,019 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:53,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:53,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:16:53,020 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:53,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:53,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1412337332, now seen corresponding path program 1 times [2020-11-28 03:16:53,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:53,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602270851] [2020-11-28 03:16:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:53,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:53,145 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 03:16:53,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602270851] [2020-11-28 03:16:53,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:53,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:53,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998133087] [2020-11-28 03:16:53,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:53,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:53,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:53,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:53,149 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 5 states. [2020-11-28 03:16:53,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:53,253 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2020-11-28 03:16:53,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:53,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:16:53,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:53,256 INFO L225 Difference]: With dead ends: 33 [2020-11-28 03:16:53,256 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 03:16:53,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:53,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 03:16:53,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-11-28 03:16:53,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:16:53,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-11-28 03:16:53,267 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2020-11-28 03:16:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:53,267 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-28 03:16:53,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2020-11-28 03:16:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:16:53,269 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:53,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:53,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:16:53,270 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:53,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:53,271 INFO L82 PathProgramCache]: Analyzing trace with hash -888595213, now seen corresponding path program 1 times [2020-11-28 03:16:53,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:53,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757156964] [2020-11-28 03:16:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:53,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:53,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:53,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-28 03:16:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:16:53,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757156964] [2020-11-28 03:16:53,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959138900] [2020-11-28 03:16:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/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 03:16:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:53,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:16:53,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:16:53,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:53,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2020-11-28 03:16:53,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984878049] [2020-11-28 03:16:53,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:16:53,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:53,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:16:53,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:16:53,807 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 10 states. [2020-11-28 03:16:54,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:54,103 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2020-11-28 03:16:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:16:54,104 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-11-28 03:16:54,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:54,106 INFO L225 Difference]: With dead ends: 55 [2020-11-28 03:16:54,106 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 03:16:54,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:16:54,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 03:16:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-11-28 03:16:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:16:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2020-11-28 03:16:54,117 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2020-11-28 03:16:54,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:54,117 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2020-11-28 03:16:54,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:16:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2020-11-28 03:16:54,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:16:54,119 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:54,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:54,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:16:54,345 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:54,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:54,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1502460051, now seen corresponding path program 1 times [2020-11-28 03:16:54,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:54,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123519848] [2020-11-28 03:16:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:54,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:54,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:54,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:16:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:16:54,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123519848] [2020-11-28 03:16:54,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074454485] [2020-11-28 03:16:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:54,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:16:54,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:16:54,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:54,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-11-28 03:16:54,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004143125] [2020-11-28 03:16:54,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:16:54,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:54,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:16:54,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:16:54,633 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 9 states. [2020-11-28 03:16:54,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:54,849 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2020-11-28 03:16:54,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:16:54,850 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-11-28 03:16:54,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:54,853 INFO L225 Difference]: With dead ends: 51 [2020-11-28 03:16:54,853 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 03:16:54,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:16:54,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 03:16:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-28 03:16:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 03:16:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2020-11-28 03:16:54,875 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 24 [2020-11-28 03:16:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:54,876 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2020-11-28 03:16:54,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:16:54,876 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2020-11-28 03:16:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 03:16:54,881 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:54,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-11-28 03:16:55,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:55,109 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:55,110 INFO L82 PathProgramCache]: Analyzing trace with hash -801267146, now seen corresponding path program 1 times [2020-11-28 03:16:55,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:55,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771408858] [2020-11-28 03:16:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:55,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:55,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:55,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:55,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-28 03:16:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:55,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-28 03:16:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 03:16:55,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771408858] [2020-11-28 03:16:55,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552769377] [2020-11-28 03:16:55,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:55,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:16:55,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 03:16:55,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:55,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2020-11-28 03:16:55,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126689911] [2020-11-28 03:16:55,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:16:55,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:55,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:16:55,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:16:55,409 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand 11 states. [2020-11-28 03:16:55,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:55,831 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-11-28 03:16:55,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:16:55,832 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-11-28 03:16:55,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:55,834 INFO L225 Difference]: With dead ends: 105 [2020-11-28 03:16:55,834 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 03:16:55,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:16:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 03:16:55,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-28 03:16:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-28 03:16:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 92 transitions. [2020-11-28 03:16:55,859 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 92 transitions. Word has length 36 [2020-11-28 03:16:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:55,860 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 92 transitions. [2020-11-28 03:16:55,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:16:55,860 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 92 transitions. [2020-11-28 03:16:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-28 03:16:55,866 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:55,867 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-11-28 03:16:56,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:56,070 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:56,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:56,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1583643682, now seen corresponding path program 1 times [2020-11-28 03:16:56,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:56,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682593155] [2020-11-28 03:16:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:16:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:16:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 03:16:56,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682593155] [2020-11-28 03:16:56,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970005375] [2020-11-28 03:16:56,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:16:56,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 03:16:56,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:56,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-28 03:16:56,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147292945] [2020-11-28 03:16:56,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:16:56,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:56,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:16:56,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:16:56,434 INFO L87 Difference]: Start difference. First operand 63 states and 92 transitions. Second operand 13 states. [2020-11-28 03:16:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:56,963 INFO L93 Difference]: Finished difference Result 177 states and 321 transitions. [2020-11-28 03:16:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-28 03:16:56,964 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-11-28 03:16:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:56,968 INFO L225 Difference]: With dead ends: 177 [2020-11-28 03:16:56,968 INFO L226 Difference]: Without dead ends: 117 [2020-11-28 03:16:56,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-11-28 03:16:56,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-28 03:16:56,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2020-11-28 03:16:56,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-28 03:16:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 166 transitions. [2020-11-28 03:16:56,996 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 166 transitions. Word has length 37 [2020-11-28 03:16:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:56,997 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 166 transitions. [2020-11-28 03:16:56,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:16:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 166 transitions. [2020-11-28 03:16:57,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-28 03:16:57,002 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:57,002 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:57,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:57,225 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:57,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:57,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1063158393, now seen corresponding path program 1 times [2020-11-28 03:16:57,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:57,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168283547] [2020-11-28 03:16:57,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:57,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:57,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:57,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:57,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:16:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:57,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:16:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:57,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-28 03:16:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-28 03:16:57,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168283547] [2020-11-28 03:16:57,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934006658] [2020-11-28 03:16:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:57,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:16:57,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-28 03:16:57,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:57,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2020-11-28 03:16:57,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381586406] [2020-11-28 03:16:57,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 03:16:57,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:57,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 03:16:57,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:16:57,632 INFO L87 Difference]: Start difference. First operand 103 states and 166 transitions. Second operand 14 states. [2020-11-28 03:16:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:58,258 INFO L93 Difference]: Finished difference Result 255 states and 495 transitions. [2020-11-28 03:16:58,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-28 03:16:58,258 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-11-28 03:16:58,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:58,262 INFO L225 Difference]: With dead ends: 255 [2020-11-28 03:16:58,262 INFO L226 Difference]: Without dead ends: 155 [2020-11-28 03:16:58,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-11-28 03:16:58,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-28 03:16:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2020-11-28 03:16:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 03:16:58,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 177 transitions. [2020-11-28 03:16:58,296 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 177 transitions. Word has length 51 [2020-11-28 03:16:58,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:58,296 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 177 transitions. [2020-11-28 03:16:58,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 03:16:58,297 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 177 transitions. [2020-11-28 03:16:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-28 03:16:58,302 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:58,302 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:58,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-28 03:16:58,529 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:58,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1732889556, now seen corresponding path program 1 times [2020-11-28 03:16:58,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:58,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61566057] [2020-11-28 03:16:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:16:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:16:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:16:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-11-28 03:16:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:16:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:16:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:16:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-11-28 03:16:58,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61566057] [2020-11-28 03:16:58,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816382263] [2020-11-28 03:16:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:16:58,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-11-28 03:16:59,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:59,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2020-11-28 03:16:59,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607873876] [2020-11-28 03:16:59,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-28 03:16:59,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:59,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-28 03:16:59,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:16:59,124 INFO L87 Difference]: Start difference. First operand 109 states and 177 transitions. Second operand 16 states. [2020-11-28 03:16:59,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:59,909 INFO L93 Difference]: Finished difference Result 240 states and 462 transitions. [2020-11-28 03:16:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-28 03:16:59,910 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 93 [2020-11-28 03:16:59,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:59,912 INFO L225 Difference]: With dead ends: 240 [2020-11-28 03:16:59,912 INFO L226 Difference]: Without dead ends: 107 [2020-11-28 03:16:59,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2020-11-28 03:16:59,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-28 03:16:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84. [2020-11-28 03:16:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-28 03:16:59,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2020-11-28 03:16:59,947 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 93 [2020-11-28 03:16:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:59,948 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2020-11-28 03:16:59,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-28 03:16:59,948 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2020-11-28 03:16:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-28 03:16:59,957 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:59,957 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 9, 9, 8, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:00,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:00,160 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:00,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:00,160 INFO L82 PathProgramCache]: Analyzing trace with hash 740260986, now seen corresponding path program 2 times [2020-11-28 03:17:00,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:00,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989746853] [2020-11-28 03:17:00,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:17:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:17:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-11-28 03:17:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-28 03:17:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-28 03:17:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 67 proven. 142 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-11-28 03:17:00,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989746853] [2020-11-28 03:17:00,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963721431] [2020-11-28 03:17:00,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:00,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:17:00,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:17:00,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:17:00,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 54 proven. 127 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-11-28 03:17:00,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:17:00,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2020-11-28 03:17:00,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272022376] [2020-11-28 03:17:00,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 03:17:00,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:00,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 03:17:00,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:17:00,868 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand 15 states. [2020-11-28 03:17:01,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:01,423 INFO L93 Difference]: Finished difference Result 169 states and 248 transitions. [2020-11-28 03:17:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-28 03:17:01,425 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-11-28 03:17:01,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:01,427 INFO L225 Difference]: With dead ends: 169 [2020-11-28 03:17:01,427 INFO L226 Difference]: Without dead ends: 93 [2020-11-28 03:17:01,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-11-28 03:17:01,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-28 03:17:01,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2020-11-28 03:17:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-28 03:17:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 118 transitions. [2020-11-28 03:17:01,439 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 118 transitions. Word has length 148 [2020-11-28 03:17:01,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:01,439 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 118 transitions. [2020-11-28 03:17:01,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 03:17:01,439 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 118 transitions. [2020-11-28 03:17:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-11-28 03:17:01,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:01,452 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 15, 14, 14, 12, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:01,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:01,657 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:01,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:01,658 INFO L82 PathProgramCache]: Analyzing trace with hash -284791959, now seen corresponding path program 3 times [2020-11-28 03:17:01,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:01,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303900384] [2020-11-28 03:17:01,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:17:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:17:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-28 03:17:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-11-28 03:17:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:17:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-28 03:17:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 209 proven. 377 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2020-11-28 03:17:02,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303900384] [2020-11-28 03:17:02,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012050444] [2020-11-28 03:17:02,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:02,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-28 03:17:02,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:17:02,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:17:02,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 550 proven. 4 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2020-11-28 03:17:02,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:17:02,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 21 [2020-11-28 03:17:02,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568271241] [2020-11-28 03:17:02,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-28 03:17:02,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:02,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-28 03:17:02,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-11-28 03:17:02,514 INFO L87 Difference]: Start difference. First operand 87 states and 118 transitions. Second operand 21 states. [2020-11-28 03:17:03,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:03,683 INFO L93 Difference]: Finished difference Result 226 states and 381 transitions. [2020-11-28 03:17:03,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-28 03:17:03,683 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 217 [2020-11-28 03:17:03,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:03,686 INFO L225 Difference]: With dead ends: 226 [2020-11-28 03:17:03,687 INFO L226 Difference]: Without dead ends: 133 [2020-11-28 03:17:03,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=282, Invalid=1610, Unknown=0, NotChecked=0, Total=1892 [2020-11-28 03:17:03,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-11-28 03:17:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 122. [2020-11-28 03:17:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-28 03:17:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 168 transitions. [2020-11-28 03:17:03,716 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 168 transitions. Word has length 217 [2020-11-28 03:17:03,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:03,718 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 168 transitions. [2020-11-28 03:17:03,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-28 03:17:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 168 transitions. [2020-11-28 03:17:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-11-28 03:17:03,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:03,722 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:03,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 03:17:03,937 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:03,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:03,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2037516304, now seen corresponding path program 4 times [2020-11-28 03:17:03,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:03,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138155135] [2020-11-28 03:17:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:17:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:17:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-28 03:17:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-28 03:17:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:05,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:05,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:05,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:17:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:05,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:05,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2020-11-28 03:17:05,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138155135] [2020-11-28 03:17:05,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112131602] [2020-11-28 03:17:05,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:05,243 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:17:05,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:17:05,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 103 conjunts are in the unsatisfiable core [2020-11-28 03:17:05,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2020-11-28 03:17:06,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:17:06,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2020-11-28 03:17:06,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605343216] [2020-11-28 03:17:06,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-28 03:17:06,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:06,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-28 03:17:06,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2020-11-28 03:17:06,182 INFO L87 Difference]: Start difference. First operand 122 states and 168 transitions. Second operand 36 states. [2020-11-28 03:17:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:06,688 INFO L93 Difference]: Finished difference Result 141 states and 195 transitions. [2020-11-28 03:17:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-28 03:17:06,688 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 174 [2020-11-28 03:17:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:06,691 INFO L225 Difference]: With dead ends: 141 [2020-11-28 03:17:06,691 INFO L226 Difference]: Without dead ends: 137 [2020-11-28 03:17:06,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 228 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2020-11-28 03:17:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-28 03:17:06,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 132. [2020-11-28 03:17:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-28 03:17:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 185 transitions. [2020-11-28 03:17:06,712 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 185 transitions. Word has length 174 [2020-11-28 03:17:06,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:06,714 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 185 transitions. [2020-11-28 03:17:06,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-28 03:17:06,714 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 185 transitions. [2020-11-28 03:17:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-11-28 03:17:06,718 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:06,718 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:06,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:06,945 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:06,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:06,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1637409048, now seen corresponding path program 5 times [2020-11-28 03:17:06,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:06,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107260364] [2020-11-28 03:17:06,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:06,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:17:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:17:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-28 03:17:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-28 03:17:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 144 proven. 139 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-11-28 03:17:07,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107260364] [2020-11-28 03:17:07,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408327633] [2020-11-28 03:17:07,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:07,415 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-28 03:17:07,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:17:07,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 03:17:07,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 150 proven. 142 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-11-28 03:17:07,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:17:07,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 19 [2020-11-28 03:17:07,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545602576] [2020-11-28 03:17:07,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-28 03:17:07,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:07,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-28 03:17:07,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:17:07,595 INFO L87 Difference]: Start difference. First operand 132 states and 185 transitions. Second operand 19 states. [2020-11-28 03:17:08,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:08,179 INFO L93 Difference]: Finished difference Result 265 states and 393 transitions. [2020-11-28 03:17:08,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-28 03:17:08,180 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 147 [2020-11-28 03:17:08,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:08,184 INFO L225 Difference]: With dead ends: 265 [2020-11-28 03:17:08,184 INFO L226 Difference]: Without dead ends: 143 [2020-11-28 03:17:08,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2020-11-28 03:17:08,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-11-28 03:17:08,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 130. [2020-11-28 03:17:08,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-28 03:17:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 174 transitions. [2020-11-28 03:17:08,200 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 174 transitions. Word has length 147 [2020-11-28 03:17:08,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:08,201 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 174 transitions. [2020-11-28 03:17:08,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-28 03:17:08,201 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 174 transitions. [2020-11-28 03:17:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-11-28 03:17:08,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:08,204 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:08,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:08,429 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:08,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:08,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1524602104, now seen corresponding path program 6 times [2020-11-28 03:17:08,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:08,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022889770] [2020-11-28 03:17:08,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:17:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:17:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-28 03:17:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-28 03:17:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-28 03:17:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:17:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 153 proven. 211 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2020-11-28 03:17:08,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022889770] [2020-11-28 03:17:08,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896010067] [2020-11-28 03:17:08,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:08,939 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-28 03:17:08,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:17:08,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:17:08,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 638 proven. 46 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2020-11-28 03:17:09,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:17:09,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2020-11-28 03:17:09,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671517282] [2020-11-28 03:17:09,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-28 03:17:09,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:09,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-28 03:17:09,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:17:09,129 INFO L87 Difference]: Start difference. First operand 130 states and 174 transitions. Second operand 18 states. [2020-11-28 03:17:09,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:09,556 INFO L93 Difference]: Finished difference Result 254 states and 349 transitions. [2020-11-28 03:17:09,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-28 03:17:09,557 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 201 [2020-11-28 03:17:09,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:09,558 INFO L225 Difference]: With dead ends: 254 [2020-11-28 03:17:09,559 INFO L226 Difference]: Without dead ends: 131 [2020-11-28 03:17:09,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2020-11-28 03:17:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-28 03:17:09,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2020-11-28 03:17:09,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-28 03:17:09,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 159 transitions. [2020-11-28 03:17:09,569 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 159 transitions. Word has length 201 [2020-11-28 03:17:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:09,570 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 159 transitions. [2020-11-28 03:17:09,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-28 03:17:09,570 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 159 transitions. [2020-11-28 03:17:09,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-11-28 03:17:09,573 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:09,573 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:09,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 03:17:09,781 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:09,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:09,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2093836183, now seen corresponding path program 7 times [2020-11-28 03:17:09,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:09,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068697332] [2020-11-28 03:17:09,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:09,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:17:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:09,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:09,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:09,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:09,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:09,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:17:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-28 03:17:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-28 03:17:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-11-28 03:17:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:17:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:17:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:17:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:17:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 200 proven. 324 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-28 03:17:10,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068697332] [2020-11-28 03:17:10,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086378849] [2020-11-28 03:17:10,261 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:10,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 03:17:10,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 109 proven. 349 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2020-11-28 03:17:10,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:17:10,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 19 [2020-11-28 03:17:10,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398262711] [2020-11-28 03:17:10,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-28 03:17:10,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:10,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-28 03:17:10,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:17:10,568 INFO L87 Difference]: Start difference. First operand 125 states and 159 transitions. Second operand 19 states. [2020-11-28 03:17:11,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:11,180 INFO L93 Difference]: Finished difference Result 251 states and 338 transitions. [2020-11-28 03:17:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-28 03:17:11,181 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 215 [2020-11-28 03:17:11,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:11,182 INFO L225 Difference]: With dead ends: 251 [2020-11-28 03:17:11,182 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:17:11,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2020-11-28 03:17:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:17:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:17:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:17:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:17:11,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 215 [2020-11-28 03:17:11,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:11,184 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:17:11,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-28 03:17:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:17:11,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:17:11,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 03:17:11,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:17:12,485 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 22 [2020-11-28 03:17:12,596 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 7 [2020-11-28 03:17:13,207 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 32 [2020-11-28 03:17:13,358 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 7 [2020-11-28 03:17:13,361 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:17:13,361 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:17:13,361 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:17:13,361 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:17:13,361 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:17:13,361 INFO L270 CegarLoopResult]: At program point L43(lines 37 44) the Hoare annotation is: (<= 6 ULTIMATE.start_main_~x~0) [2020-11-28 03:17:13,362 INFO L274 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-11-28 03:17:13,362 INFO L274 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-11-28 03:17:13,362 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 6) (<= 6 ULTIMATE.start_main_~x~0)) [2020-11-28 03:17:13,362 INFO L274 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-11-28 03:17:13,362 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2020-11-28 03:17:13,362 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 03:17:13,362 INFO L277 CegarLoopResult]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2020-11-28 03:17:13,362 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2020-11-28 03:17:13,362 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-28 03:17:13,363 INFO L270 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (and (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and .cse0 (<= 6 |fibo2_#in~n|)) (and (<= |fibo2_#in~n| 3) (<= |fibo2_#t~ret9| 1) .cse0 (<= 1 |fibo2_#t~ret9|)) (and (<= |fibo2_#t~ret9| 3) (<= 3 |fibo2_#t~ret9|) .cse0 (<= 5 |fibo2_#in~n|)))) (<= 2 |fibo2_#in~n|)) [2020-11-28 03:17:13,363 INFO L274 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-11-28 03:17:13,363 INFO L274 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-11-28 03:17:13,363 INFO L274 CegarLoopResult]: For program point L20(lines 20 26) no Hoare annotation was computed. [2020-11-28 03:17:13,363 INFO L274 CegarLoopResult]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2020-11-28 03:17:13,363 INFO L274 CegarLoopResult]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2020-11-28 03:17:13,363 INFO L277 CegarLoopResult]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2020-11-28 03:17:13,363 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 1)) (= fibo1_~n |fibo1_#in~n|)) [2020-11-28 03:17:13,363 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-28 03:17:13,364 INFO L270 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (and (or (<= |fibo1_#in~n| 3) (and (<= |fibo1_#in~n| 5) (<= 5 fibo1_~n)) (<= 7 |fibo1_#in~n|) (and (<= 5 |fibo1_#in~n|) (<= 5 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 5)) (and (<= |fibo1_#t~ret7| 2) (<= |fibo1_#in~n| 4) (<= 2 |fibo1_#t~ret7|))) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 4 |fibo1_#in~n|) .cse0) (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) (<= 2 |fibo1_#in~n|) .cse0)))) [2020-11-28 03:17:13,364 INFO L274 CegarLoopResult]: For program point L12(lines 12 16) no Hoare annotation was computed. [2020-11-28 03:17:13,364 INFO L274 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-11-28 03:17:13,364 INFO L274 CegarLoopResult]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2020-11-28 03:17:13,364 INFO L274 CegarLoopResult]: For program point L10(lines 10 16) no Hoare annotation was computed. [2020-11-28 03:17:13,364 INFO L274 CegarLoopResult]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2020-11-28 03:17:13,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:17:13 BoogieIcfgContainer [2020-11-28 03:17:13,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:17:13,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:17:13,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:17:13,379 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:17:13,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:52" (3/4) ... [2020-11-28 03:17:13,393 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:17:13,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2020-11-28 03:17:13,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2020-11-28 03:17:13,406 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 03:17:13,407 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:17:13,407 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:17:13,407 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:17:13,462 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_08d50242-0d7b-465f-b4f2-6e50e71b9919/bin/uautomizer/witness.graphml [2020-11-28 03:17:13,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:17:13,464 INFO L168 Benchmark]: Toolchain (without parser) took 22014.58 ms. Allocated memory was 83.9 MB in the beginning and 337.6 MB in the end (delta: 253.8 MB). Free memory was 55.0 MB in the beginning and 266.0 MB in the end (delta: -211.1 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:13,465 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 83.9 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:13,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.07 ms. Allocated memory is still 83.9 MB. Free memory was 54.7 MB in the beginning and 62.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:13,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.56 ms. Allocated memory is still 83.9 MB. Free memory was 62.6 MB in the beginning and 61.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:13,466 INFO L168 Benchmark]: Boogie Preprocessor took 42.48 ms. Allocated memory is still 83.9 MB. Free memory was 61.3 MB in the beginning and 60.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:13,466 INFO L168 Benchmark]: RCFGBuilder took 457.05 ms. Allocated memory is still 83.9 MB. Free memory was 60.3 MB in the beginning and 47.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:13,467 INFO L168 Benchmark]: TraceAbstraction took 21024.80 ms. Allocated memory was 83.9 MB in the beginning and 337.6 MB in the end (delta: 253.8 MB). Free memory was 47.3 MB in the beginning and 269.2 MB in the end (delta: -221.8 MB). Peak memory consumption was 189.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:13,467 INFO L168 Benchmark]: Witness Printer took 84.90 ms. Allocated memory is still 337.6 MB. Free memory was 269.2 MB in the beginning and 266.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:13,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 83.9 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 354.07 ms. Allocated memory is still 83.9 MB. Free memory was 54.7 MB in the beginning and 62.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.56 ms. Allocated memory is still 83.9 MB. Free memory was 62.6 MB in the beginning and 61.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.48 ms. Allocated memory is still 83.9 MB. Free memory was 61.3 MB in the beginning and 60.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 457.05 ms. Allocated memory is still 83.9 MB. Free memory was 60.3 MB in the beginning and 47.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21024.80 ms. Allocated memory was 83.9 MB in the beginning and 337.6 MB in the end (delta: 253.8 MB). Free memory was 47.3 MB in the beginning and 269.2 MB in the end (delta: -221.8 MB). Peak memory consumption was 189.8 MB. Max. memory is 16.1 GB. * Witness Printer took 84.90 ms. Allocated memory is still 337.6 MB. Free memory was 269.2 MB in the beginning and 266.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 6 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.9s, OverallIterations: 14, TraceHistogramMax: 17, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 429 SDtfs, 661 SDslu, 3898 SDs, 0 SdLazy, 4717 SolverSat, 626 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2055 GetRequests, 1737 SyntacticMatches, 17 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 130 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 566 PreInvPairs, 803 NumberOfFragments, 122 HoareAnnotationTreeSize, 566 FomulaSimplifications, 4853 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 8 FomulaSimplificationsInter, 5060 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 2753 NumberOfCodeBlocks, 2591 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 2727 ConstructedInterpolants, 0 QuantifiedInterpolants, 821875 SizeOfPredicates, 56 NumberOfNonLiveVariables, 2990 ConjunctsInSsa, 213 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 8914/11522 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...