./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c -s /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 871be16186d4378aec884efd2352a47ca4eb57bc ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:13:53,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:53,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:53,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:53,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:53,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:53,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:53,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:53,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:53,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:53,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:53,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:53,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:53,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:53,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:53,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:53,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:53,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:53,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:53,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:53,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:53,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:53,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:53,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:53,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:53,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:53,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:53,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:53,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:53,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:53,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:53,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:53,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:53,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:53,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:53,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:53,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:53,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:53,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:53,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:53,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:53,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 03:13:53,731 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:53,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:53,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:53,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:53,735 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:53,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:53,735 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:13:53,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:53,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:53,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:13:53,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:13:53,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:13:53,738 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:13:53,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:53,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:53,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:13:53,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:53,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:53,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:13:53,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:13:53,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:53,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:53,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:13:53,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:13:53,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:53,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:13:53,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:13:53,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:53,742 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_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 871be16186d4378aec884efd2352a47ca4eb57bc [2020-11-28 03:13:54,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:54,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:54,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:54,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:54,141 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:54,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c [2020-11-28 03:13:54,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer/data/e318ae007/4432de7ecdb5450280395194822071b3/FLAG77ffd690e [2020-11-28 03:13:54,865 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:54,867 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c [2020-11-28 03:13:54,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer/data/e318ae007/4432de7ecdb5450280395194822071b3/FLAG77ffd690e [2020-11-28 03:13:55,210 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer/data/e318ae007/4432de7ecdb5450280395194822071b3 [2020-11-28 03:13:55,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:55,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:55,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:55,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:55,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:55,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3f1fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55, skipping insertion in model container [2020-11-28 03:13:55,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:55,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:55,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:55,440 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:55,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:55,505 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:55,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55 WrapperNode [2020-11-28 03:13:55,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:55,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:55,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:55,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:55,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:55,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:55,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:55,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:55,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:55,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:55,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:55,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:55,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/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 03:13:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:55,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure mc91 [2020-11-28 03:13:55,677 INFO L138 BoogieDeclarations]: Found implementation of procedure mc91 [2020-11-28 03:13:55,912 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:55,913 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-28 03:13:55,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:55 BoogieIcfgContainer [2020-11-28 03:13:55,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:55,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:13:55,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:13:55,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:13:55,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:55" (1/3) ... [2020-11-28 03:13:55,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a37af0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:55, skipping insertion in model container [2020-11-28 03:13:55,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (2/3) ... [2020-11-28 03:13:55,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a37af0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:55, skipping insertion in model container [2020-11-28 03:13:55,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:55" (3/3) ... [2020-11-28 03:13:55,935 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91_Recursion.c [2020-11-28 03:13:55,974 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:13:55,979 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 03:13:56,009 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:13:56,056 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:13:56,056 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:13:56,056 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:13:56,056 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:56,057 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:56,057 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:13:56,057 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:56,057 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:13:56,077 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-28 03:13:56,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 03:13:56,082 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:56,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 03:13:56,083 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:56,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:56,090 INFO L82 PathProgramCache]: Analyzing trace with hash 30304495, now seen corresponding path program 1 times [2020-11-28 03:13:56,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:56,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134819495] [2020-11-28 03:13:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:56,418 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 03:13:56,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134819495] [2020-11-28 03:13:56,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:56,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:56,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000465918] [2020-11-28 03:13:56,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:13:56,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:56,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:13:56,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:56,459 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-11-28 03:13:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:56,678 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-11-28 03:13:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:13:56,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-28 03:13:56,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:56,708 INFO L225 Difference]: With dead ends: 40 [2020-11-28 03:13:56,708 INFO L226 Difference]: Without dead ends: 32 [2020-11-28 03:13:56,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 03:13:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-28 03:13:56,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-11-28 03:13:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:13:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-11-28 03:13:56,769 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 5 [2020-11-28 03:13:56,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:56,770 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-11-28 03:13:56,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:13:56,770 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-11-28 03:13:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 03:13:56,771 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:56,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 03:13:56,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:13:56,772 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:56,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:56,773 INFO L82 PathProgramCache]: Analyzing trace with hash 30304655, now seen corresponding path program 1 times [2020-11-28 03:13:56,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:56,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116539453] [2020-11-28 03:13:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:56,812 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 03:13:56,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116539453] [2020-11-28 03:13:56,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:56,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:13:56,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705450247] [2020-11-28 03:13:56,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:56,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:56,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:56,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:56,817 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 3 states. [2020-11-28 03:13:56,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:56,851 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-11-28 03:13:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:56,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 03:13:56,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:56,853 INFO L225 Difference]: With dead ends: 29 [2020-11-28 03:13:56,854 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 03:13:56,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 03:13:56,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-11-28 03:13:56,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 03:13:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-11-28 03:13:56,895 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 5 [2020-11-28 03:13:56,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:56,895 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-11-28 03:13:56,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:56,896 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-11-28 03:13:56,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:13:56,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:56,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:13:56,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:13:56,897 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:56,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:56,900 INFO L82 PathProgramCache]: Analyzing trace with hash 939439389, now seen corresponding path program 1 times [2020-11-28 03:13:56,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:56,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070489390] [2020-11-28 03:13:56,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:56,970 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 03:13:56,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070489390] [2020-11-28 03:13:56,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:56,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:13:56,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59862657] [2020-11-28 03:13:56,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:56,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:56,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:56,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:56,974 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 3 states. [2020-11-28 03:13:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:57,000 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2020-11-28 03:13:57,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:57,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 03:13:57,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:57,003 INFO L225 Difference]: With dead ends: 28 [2020-11-28 03:13:57,003 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 03:13:57,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 03:13:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-11-28 03:13:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:13:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-11-28 03:13:57,014 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 6 [2020-11-28 03:13:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:57,015 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-28 03:13:57,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:57,015 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-11-28 03:13:57,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:13:57,019 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:57,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:13:57,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:13:57,020 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:57,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:57,021 INFO L82 PathProgramCache]: Analyzing trace with hash 939444354, now seen corresponding path program 1 times [2020-11-28 03:13:57,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:57,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455237135] [2020-11-28 03:13:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:57,099 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 03:13:57,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455237135] [2020-11-28 03:13:57,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:57,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:57,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149656755] [2020-11-28 03:13:57,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:13:57,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:57,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:13:57,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:57,102 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-11-28 03:13:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:57,274 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2020-11-28 03:13:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:13:57,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-28 03:13:57,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:57,276 INFO L225 Difference]: With dead ends: 39 [2020-11-28 03:13:57,276 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 03:13:57,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 03:13:57,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 03:13:57,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-11-28 03:13:57,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:13:57,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-11-28 03:13:57,289 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 6 [2020-11-28 03:13:57,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:57,290 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-11-28 03:13:57,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:13:57,290 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-11-28 03:13:57,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:13:57,291 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:57,291 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:57,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:13:57,292 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:57,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:57,292 INFO L82 PathProgramCache]: Analyzing trace with hash 312291472, now seen corresponding path program 1 times [2020-11-28 03:13:57,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:57,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710281922] [2020-11-28 03:13:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:57,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710281922] [2020-11-28 03:13:57,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:57,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:13:57,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387493465] [2020-11-28 03:13:57,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:13:57,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:57,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:13:57,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:57,350 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2020-11-28 03:13:57,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:57,494 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2020-11-28 03:13:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:13:57,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 03:13:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:57,497 INFO L225 Difference]: With dead ends: 55 [2020-11-28 03:13:57,497 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 03:13:57,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:13:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 03:13:57,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2020-11-28 03:13:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 03:13:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-11-28 03:13:57,536 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 10 [2020-11-28 03:13:57,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:57,539 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-11-28 03:13:57,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:13:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-11-28 03:13:57,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:13:57,541 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:57,541 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:57,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:13:57,542 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:57,543 INFO L82 PathProgramCache]: Analyzing trace with hash -904725729, now seen corresponding path program 1 times [2020-11-28 03:13:57,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:57,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394847998] [2020-11-28 03:13:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:57,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:13:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:13:57,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394847998] [2020-11-28 03:13:57,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013468604] [2020-11-28 03:13:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/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 03:13:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:57,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:13:57,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:58,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:13:58,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2020-11-28 03:13:58,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282501205] [2020-11-28 03:13:58,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 03:13:58,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:58,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 03:13:58,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:13:58,113 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 15 states. [2020-11-28 03:13:58,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:58,658 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2020-11-28 03:13:58,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 03:13:58,659 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-11-28 03:13:58,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:58,661 INFO L225 Difference]: With dead ends: 70 [2020-11-28 03:13:58,662 INFO L226 Difference]: Without dead ends: 69 [2020-11-28 03:13:58,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2020-11-28 03:13:58,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-28 03:13:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46. [2020-11-28 03:13:58,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 03:13:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-11-28 03:13:58,679 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 18 [2020-11-28 03:13:58,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:58,679 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-11-28 03:13:58,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 03:13:58,680 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-11-28 03:13:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:13:58,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:58,681 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:58,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 03:13:58,908 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:58,909 INFO L82 PathProgramCache]: Analyzing trace with hash 2018278482, now seen corresponding path program 1 times [2020-11-28 03:13:58,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:58,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051527063] [2020-11-28 03:13:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:58,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:13:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:13:59,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051527063] [2020-11-28 03:13:59,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:59,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:13:59,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127929632] [2020-11-28 03:13:59,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:13:59,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:59,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:13:59,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:13:59,019 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 7 states. [2020-11-28 03:13:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:59,255 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2020-11-28 03:13:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:13:59,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 03:13:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:59,259 INFO L225 Difference]: With dead ends: 98 [2020-11-28 03:13:59,259 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 03:13:59,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:13:59,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 03:13:59,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2020-11-28 03:13:59,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-28 03:13:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2020-11-28 03:13:59,283 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 19 [2020-11-28 03:13:59,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:59,283 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2020-11-28 03:13:59,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:13:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2020-11-28 03:13:59,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 03:13:59,286 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:59,287 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-28 03:13:59,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:13:59,287 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:59,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:59,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1310326519, now seen corresponding path program 1 times [2020-11-28 03:13:59,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:59,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107909430] [2020-11-28 03:13:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:59,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:13:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:59,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-28 03:13:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:59,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:13:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-11-28 03:13:59,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107909430] [2020-11-28 03:13:59,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:59,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:13:59,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332477363] [2020-11-28 03:13:59,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:13:59,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:59,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:13:59,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:13:59,508 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 8 states. [2020-11-28 03:13:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:59,805 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2020-11-28 03:13:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:13:59,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-11-28 03:13:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:59,807 INFO L225 Difference]: With dead ends: 92 [2020-11-28 03:13:59,807 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:13:59,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:13:59,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:13:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:13:59,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:13:59,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:13:59,817 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-11-28 03:13:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:59,817 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:13:59,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:13:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:13:59,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:13:59,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:13:59,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:14:00,150 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2020-11-28 03:14:00,306 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 27 [2020-11-28 03:14:00,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:14:00,312 INFO L270 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2020-11-28 03:14:00,312 INFO L274 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-11-28 03:14:00,312 INFO L274 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-11-28 03:14:00,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:14:00,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:14:00,313 INFO L274 CegarLoopResult]: For program point mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2020-11-28 03:14:00,313 INFO L274 CegarLoopResult]: For program point mc91FINAL(lines 8 12) no Hoare annotation was computed. [2020-11-28 03:14:00,313 INFO L274 CegarLoopResult]: For program point mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2020-11-28 03:14:00,313 INFO L274 CegarLoopResult]: For program point mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2020-11-28 03:14:00,314 INFO L274 CegarLoopResult]: For program point mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2020-11-28 03:14:00,314 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-28 03:14:00,314 INFO L274 CegarLoopResult]: For program point L10(lines 10 11) no Hoare annotation was computed. [2020-11-28 03:14:00,314 INFO L274 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-11-28 03:14:00,314 INFO L274 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-11-28 03:14:00,314 INFO L270 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse0 (= mc91_~n |mc91_#in~n|))) (and (or .cse0 (not (<= 0 (+ |mc91_#in~n| 2147483648))) (not (<= |mc91_#in~n| 111))) (or (and (<= mc91_~n 100) .cse0) (not (<= |mc91_#in~n| 2147483648)) (not (<= 91 |mc91_#in~n|))))) [2020-11-28 03:14:00,314 INFO L274 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-11-28 03:14:00,315 INFO L274 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-11-28 03:14:00,315 INFO L270 CegarLoopResult]: At program point L11-4(line 11) the Hoare annotation is: (let ((.cse0 (= mc91_~n |mc91_#in~n|))) (and (or (and (<= mc91_~n 100) .cse0) (not (<= |mc91_#in~n| 2147483648)) (not (<= 91 |mc91_#in~n|))) (or (not (<= 0 (+ |mc91_#in~n| 2147483648))) (not (<= |mc91_#in~n| 111)) (and .cse0 (<= |mc91_#t~ret0| 2147483648) (<= 91 |mc91_#t~ret0|))))) [2020-11-28 03:14:00,315 INFO L277 CegarLoopResult]: At program point mc91ENTRY(lines 8 12) the Hoare annotation is: true [2020-11-28 03:14:00,315 INFO L274 CegarLoopResult]: For program point L11-5(line 11) no Hoare annotation was computed. [2020-11-28 03:14:00,315 INFO L274 CegarLoopResult]: For program point mc91EXIT(lines 8 12) no Hoare annotation was computed. [2020-11-28 03:14:00,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:14:00 BoogieIcfgContainer [2020-11-28 03:14:00,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:14:00,326 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:14:00,326 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:14:00,330 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:14:00,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:55" (3/4) ... [2020-11-28 03:14:00,334 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:14:00,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure mc91 [2020-11-28 03:14:00,356 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 03:14:00,356 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 03:14:00,411 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_191b31ff-2e35-4d59-a2e2-9a48e10ecaf1/bin/uautomizer/witness.graphml [2020-11-28 03:14:00,415 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:14:00,417 INFO L168 Benchmark]: Toolchain (without parser) took 5200.87 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.8 MB in the beginning and 83.1 MB in the end (delta: -15.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:00,417 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 75.5 MB. Free memory was 51.3 MB in the beginning and 51.2 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:00,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.38 ms. Allocated memory is still 100.7 MB. Free memory was 67.6 MB in the beginning and 79.8 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:00,418 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.02 ms. Allocated memory is still 100.7 MB. Free memory was 79.8 MB in the beginning and 78.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:00,419 INFO L168 Benchmark]: Boogie Preprocessor took 25.36 ms. Allocated memory is still 100.7 MB. Free memory was 78.7 MB in the beginning and 77.8 MB in the end (delta: 946.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:00,419 INFO L168 Benchmark]: RCFGBuilder took 339.77 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 68.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:00,420 INFO L168 Benchmark]: TraceAbstraction took 4408.83 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.8 MB in the beginning and 85.2 MB in the end (delta: -17.4 MB). Peak memory consumption was 50.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:00,421 INFO L168 Benchmark]: Witness Printer took 89.26 ms. Allocated memory is still 121.6 MB. Free memory was 85.2 MB in the beginning and 83.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:00,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 75.5 MB. Free memory was 51.3 MB in the beginning and 51.2 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.38 ms. Allocated memory is still 100.7 MB. Free memory was 67.6 MB in the beginning and 79.8 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.02 ms. Allocated memory is still 100.7 MB. Free memory was 79.8 MB in the beginning and 78.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.36 ms. Allocated memory is still 100.7 MB. Free memory was 78.7 MB in the beginning and 77.8 MB in the end (delta: 946.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 339.77 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 68.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4408.83 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.8 MB in the beginning and 85.2 MB in the end (delta: -17.4 MB). Peak memory consumption was 50.1 MB. Max. memory is 16.1 GB. * Witness Printer took 89.26 ms. Allocated memory is still 121.6 MB. Free memory was 85.2 MB in the beginning and 83.1 MB in the end (delta: 2.1 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: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 7, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 213 SDslu, 226 SDs, 0 SdLazy, 403 SolverSat, 103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 51 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 58 PreInvPairs, 58 NumberOfFragments, 79 HoareAnnotationTreeSize, 58 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 4 FomulaSimplificationsInter, 314 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 5895 SizeOfPredicates, 4 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 94/102 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...