./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.01.c -s /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/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 9088f505b24b0512dbb9fa22d66082b538cf5175 .............................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:59:23,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:59:23,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:59:23,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:59:23,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:59:23,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:59:23,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:59:23,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:59:23,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:59:23,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:59:23,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:59:23,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:59:23,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:59:23,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:59:23,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:59:23,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:59:23,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:59:23,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:59:23,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:59:23,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:59:23,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:59:23,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:59:23,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:59:23,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:59:23,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:59:23,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:59:23,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:59:23,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:59:23,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:59:23,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:59:23,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:59:23,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:59:23,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:59:23,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:59:23,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:59:23,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:59:23,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:59:23,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:59:23,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:59:23,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:59:23,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:59:23,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 08:59:23,636 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:59:23,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:59:23,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:59:23,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:59:23,638 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:59:23,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:59:23,638 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:59:23,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:59:23,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:59:23,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:59:23,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:59:23,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:59:23,639 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 08:59:23,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:59:23,640 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:59:23,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:59:23,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:59:23,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:59:23,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:59:23,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:59:23,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:59:23,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:59:23,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:59:23,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:59:23,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:59:23,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:59:23,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:59:23,642 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/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/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 -> 9088f505b24b0512dbb9fa22d66082b538cf5175 [2019-10-22 08:59:23,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:59:23,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:59:23,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:59:23,682 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:59:23,682 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:59:23,683 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.01.c [2019-10-22 08:59:23,736 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/bin/uautomizer/data/6feb41939/b70cd198e1ac4d29b011f79bc4ccd2ac/FLAG0dee5579a [2019-10-22 08:59:24,105 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:59:24,106 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.01.c [2019-10-22 08:59:24,111 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/bin/uautomizer/data/6feb41939/b70cd198e1ac4d29b011f79bc4ccd2ac/FLAG0dee5579a [2019-10-22 08:59:24,520 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/bin/uautomizer/data/6feb41939/b70cd198e1ac4d29b011f79bc4ccd2ac [2019-10-22 08:59:24,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:59:24,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:59:24,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:24,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:59:24,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:59:24,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7032c33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24, skipping insertion in model container [2019-10-22 08:59:24,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,538 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:59:24,549 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:59:24,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:24,674 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:59:24,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:24,754 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:59:24,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24 WrapperNode [2019-10-22 08:59:24,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:24,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:24,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:59:24,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:59:24,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:24,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:59:24,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:59:24,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:59:24,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:59:24,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:59:24,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:59:24,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:59:24,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/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 [2019-10-22 08:59:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:59:24,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:59:24,969 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:59:24,970 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:59:24,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:24 BoogieIcfgContainer [2019-10-22 08:59:24,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:59:24,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:59:24,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:59:24,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:59:24,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:59:24" (1/3) ... [2019-10-22 08:59:24,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f163e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:59:24, skipping insertion in model container [2019-10-22 08:59:24,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (2/3) ... [2019-10-22 08:59:24,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f163e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:59:24, skipping insertion in model container [2019-10-22 08:59:24,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:24" (3/3) ... [2019-10-22 08:59:24,978 INFO L109 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex1.01.c [2019-10-22 08:59:24,984 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:59:24,989 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 08:59:24,997 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 08:59:25,017 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:59:25,017 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:59:25,018 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:59:25,018 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:59:25,018 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:59:25,018 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:59:25,018 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:59:25,018 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:59:25,027 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-10-22 08:59:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 08:59:25,032 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:25,032 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 08:59:25,034 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:59:25,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:25,039 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-10-22 08:59:25,045 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:25,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900330577] [2019-10-22 08:59:25,046 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:25,046 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:25,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:25,149 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900330577] [2019-10-22 08:59:25,150 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:25,150 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:59:25,150 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254533638] [2019-10-22 08:59:25,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:59:25,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:25,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:59:25,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:59:25,170 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-10-22 08:59:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:25,205 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-10-22 08:59:25,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:59:25,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-10-22 08:59:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:25,221 INFO L225 Difference]: With dead ends: 18 [2019-10-22 08:59:25,222 INFO L226 Difference]: Without dead ends: 8 [2019-10-22 08:59:25,227 INFO L600 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 [2019-10-22 08:59:25,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-10-22 08:59:25,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 08:59:25,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 08:59:25,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-10-22 08:59:25,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2019-10-22 08:59:25,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:25,284 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-10-22 08:59:25,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:59:25,284 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-10-22 08:59:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 08:59:25,285 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:25,285 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 08:59:25,285 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:59:25,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:25,286 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-10-22 08:59:25,286 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:25,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89496229] [2019-10-22 08:59:25,286 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:25,286 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:25,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:25,359 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:25,360 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:59:25,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:59:25 BoogieIcfgContainer [2019-10-22 08:59:25,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:59:25,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:59:25,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:59:25,375 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:59:25,375 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:24" (3/4) ... [2019-10-22 08:59:25,377 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:59:25,411 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_58036c50-1604-4d45-abb5-89a0972b3f2c/bin/uautomizer/witness.graphml [2019-10-22 08:59:25,412 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:59:25,414 INFO L168 Benchmark]: Toolchain (without parser) took 889.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -132.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:25,415 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:25,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:25,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.38 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:25,418 INFO L168 Benchmark]: Boogie Preprocessor took 15.57 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:25,419 INFO L168 Benchmark]: RCFGBuilder took 175.30 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:25,420 INFO L168 Benchmark]: TraceAbstraction took 402.46 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:25,422 INFO L168 Benchmark]: Witness Printer took 37.20 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:25,424 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 229.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.38 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.57 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 175.30 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 402.46 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 37.20 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x; [L24] x = __VERIFIER_nondet_int() [L25] COND TRUE x > 0 [L26] -2*x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 5 SDslu, 3 SDs, 0 SdLazy, 9 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...