./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/easy1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/easy1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/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 444b5d8373157a5e55f28060b712b2ca462d0fa9 ................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 04:26:22,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:26:22,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:26:22,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:26:22,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:26:22,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:26:22,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:26:22,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:26:22,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:26:22,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:26:22,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:26:22,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:26:22,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:26:22,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:26:22,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:26:22,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:26:22,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:26:22,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:26:22,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:26:22,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:26:22,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:26:22,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:26:22,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:26:22,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:26:22,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:26:22,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:26:22,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:26:22,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:26:22,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:26:22,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:26:22,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:26:22,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:26:22,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:26:22,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:26:22,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:26:22,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:26:22,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:26:22,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:26:22,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:26:22,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:26:22,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:26:22,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-20 04:26:22,632 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:26:22,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:26:22,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:26:22,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:26:22,634 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:26:22,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:26:22,634 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 04:26:22,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:26:22,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:26:22,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:26:22,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:26:22,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:26:22,636 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-20 04:26:22,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:26:22,637 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:26:22,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:26:22,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:26:22,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:26:22,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:26:22,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:26:22,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:26:22,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:26:22,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:26:22,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:26:22,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:26:22,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:26:22,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:26:22,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/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 -> 444b5d8373157a5e55f28060b712b2ca462d0fa9 [2019-11-20 04:26:22,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:26:22,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:26:22,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:26:22,839 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:26:22,840 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:26:22,845 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/easy1.c [2019-11-20 04:26:22,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/bin/uautomizer/data/8e526f104/af455a14fe504b54bef85210227a6d3d/FLAG0c512ab2d [2019-11-20 04:26:23,300 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:26:23,301 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/sv-benchmarks/c/termination-crafted/easy1.c [2019-11-20 04:26:23,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/bin/uautomizer/data/8e526f104/af455a14fe504b54bef85210227a6d3d/FLAG0c512ab2d [2019-11-20 04:26:23,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/bin/uautomizer/data/8e526f104/af455a14fe504b54bef85210227a6d3d [2019-11-20 04:26:23,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:26:23,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:26:23,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:26:23,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:26:23,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:26:23,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:26:23" (1/1) ... [2019-11-20 04:26:23,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7212ef93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23, skipping insertion in model container [2019-11-20 04:26:23,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:26:23" (1/1) ... [2019-11-20 04:26:23,348 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:26:23,363 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:26:23,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:26:23,488 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:26:23,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:26:23,581 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:26:23,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23 WrapperNode [2019-11-20 04:26:23,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:26:23,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:26:23,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:26:23,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:26:23,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23" (1/1) ... [2019-11-20 04:26:23,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23" (1/1) ... [2019-11-20 04:26:23,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:26:23,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:26:23,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:26:23,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:26:23,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23" (1/1) ... [2019-11-20 04:26:23,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23" (1/1) ... [2019-11-20 04:26:23,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23" (1/1) ... [2019-11-20 04:26:23,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23" (1/1) ... [2019-11-20 04:26:23,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23" (1/1) ... [2019-11-20 04:26:23,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23" (1/1) ... [2019-11-20 04:26:23,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23" (1/1) ... [2019-11-20 04:26:23,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:26:23,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:26:23,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:26:23,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:26:23,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/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 [2019-11-20 04:26:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:26:23,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:26:23,891 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:26:23,891 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 04:26:23,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:26:23 BoogieIcfgContainer [2019-11-20 04:26:23,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:26:23,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:26:23,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:26:23,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:26:23,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:26:23" (1/3) ... [2019-11-20 04:26:23,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72804bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:26:23, skipping insertion in model container [2019-11-20 04:26:23,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:23" (2/3) ... [2019-11-20 04:26:23,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72804bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:26:23, skipping insertion in model container [2019-11-20 04:26:23,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:26:23" (3/3) ... [2019-11-20 04:26:23,903 INFO L109 eAbstractionObserver]: Analyzing ICFG easy1.c [2019-11-20 04:26:23,912 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:26:23,918 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-20 04:26:23,930 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-20 04:26:23,949 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:26:23,949 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:26:23,949 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:26:23,949 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:26:23,950 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:26:23,950 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:26:23,950 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:26:23,950 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:26:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-20 04:26:23,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 04:26:23,967 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:26:23,967 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 04:26:23,968 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 04:26:23,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:26:23,973 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-11-20 04:26:23,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:26:23,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615339249] [2019-11-20 04:26:23,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:26:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:26:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:26:24,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615339249] [2019-11-20 04:26:24,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:26:24,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-20 04:26:24,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329192266] [2019-11-20 04:26:24,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 04:26:24,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:26:24,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:26:24,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:26:24,137 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-20 04:26:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:26:24,203 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-11-20 04:26:24,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:26:24,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-20 04:26:24,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:26:24,216 INFO L225 Difference]: With dead ends: 27 [2019-11-20 04:26:24,216 INFO L226 Difference]: Without dead ends: 17 [2019-11-20 04:26:24,219 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:26:24,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-20 04:26:24,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2019-11-20 04:26:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 04:26:24,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-20 04:26:24,260 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 4 [2019-11-20 04:26:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:26:24,261 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-20 04:26:24,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 04:26:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-20 04:26:24,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 04:26:24,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:26:24,262 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 04:26:24,263 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 04:26:24,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:26:24,264 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2019-11-20 04:26:24,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:26:24,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883663997] [2019-11-20 04:26:24,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:26:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:26:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:26:24,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883663997] [2019-11-20 04:26:24,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:26:24,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-20 04:26:24,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312178813] [2019-11-20 04:26:24,287 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 04:26:24,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:26:24,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:26:24,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:26:24,288 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2019-11-20 04:26:24,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:26:24,331 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-20 04:26:24,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:26:24,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-20 04:26:24,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:26:24,332 INFO L225 Difference]: With dead ends: 15 [2019-11-20 04:26:24,332 INFO L226 Difference]: Without dead ends: 13 [2019-11-20 04:26:24,333 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:26:24,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-20 04:26:24,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-20 04:26:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-20 04:26:24,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-20 04:26:24,337 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 5 [2019-11-20 04:26:24,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:26:24,337 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-20 04:26:24,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 04:26:24,337 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-20 04:26:24,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 04:26:24,338 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:26:24,338 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2019-11-20 04:26:24,338 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 04:26:24,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:26:24,338 INFO L82 PathProgramCache]: Analyzing trace with hash 784501312, now seen corresponding path program 1 times [2019-11-20 04:26:24,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:26:24,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560619047] [2019-11-20 04:26:24,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:26:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:26:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 04:26:24,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560619047] [2019-11-20 04:26:24,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:26:24,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 04:26:24,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525453345] [2019-11-20 04:26:24,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 04:26:24,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:26:24,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:26:24,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:26:24,366 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2019-11-20 04:26:24,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:26:24,397 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-11-20 04:26:24,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:26:24,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-20 04:26:24,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:26:24,398 INFO L225 Difference]: With dead ends: 13 [2019-11-20 04:26:24,398 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 04:26:24,399 INFO L630 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 [2019-11-20 04:26:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 04:26:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 04:26:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 04:26:24,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 04:26:24,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-20 04:26:24,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:26:24,400 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:26:24,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 04:26:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:26:24,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 04:26:24,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 04:26:24,418 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-20 04:26:24,418 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 04:26:24,418 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-11-20 04:26:24,419 INFO L447 ceAbstractionStarter]: At program point L27(lines 15 28) the Hoare annotation is: true [2019-11-20 04:26:24,419 INFO L444 ceAbstractionStarter]: For program point L21(lines 21 25) no Hoare annotation was computed. [2019-11-20 04:26:24,419 INFO L440 ceAbstractionStarter]: At program point L21-2(lines 20 26) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~x~0) [2019-11-20 04:26:24,419 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-20 04:26:24,420 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-11-20 04:26:24,420 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 04:26:24,420 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 04:26:24,420 INFO L444 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-11-20 04:26:24,420 INFO L444 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2019-11-20 04:26:24,420 INFO L444 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-20 04:26:24,421 INFO L444 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-20 04:26:24,421 INFO L444 ceAbstractionStarter]: For program point L20-2(lines 20 26) no Hoare annotation was computed. [2019-11-20 04:26:24,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:26:24 BoogieIcfgContainer [2019-11-20 04:26:24,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:26:24,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:26:24,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:26:24,435 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:26:24,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:26:23" (3/4) ... [2019-11-20 04:26:24,439 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 04:26:24,449 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 04:26:24,449 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 04:26:24,488 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c2bb9f3e-1b42-4202-9077-b5b1e9e92a74/bin/uautomizer/witness.graphml [2019-11-20 04:26:24,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:26:24,490 INFO L168 Benchmark]: Toolchain (without parser) took 1161.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -147.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. [2019-11-20 04:26:24,491 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:26:24,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -203.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:26:24,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:26:24,492 INFO L168 Benchmark]: Boogie Preprocessor took 17.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:26:24,492 INFO L168 Benchmark]: RCFGBuilder took 269.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:26:24,493 INFO L168 Benchmark]: TraceAbstraction took 540.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:26:24,493 INFO L168 Benchmark]: Witness Printer took 53.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:26:24,496 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 249.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -203.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 269.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 540.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 11.5 GB. * Witness Printer took 53.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 12 SDslu, 5 SDs, 0 SdLazy, 29 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...