./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted/Cairo_nondet_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Cairo_nondet_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/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 de94f0c7b8482738d507216e71ac3b33c5f9a9e3 .......................................................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-11-09 22:22:29,700 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-09 22:22:29,701 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-09 22:22:29,710 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-09 22:22:29,710 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-09 22:22:29,711 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-09 22:22:29,712 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-09 22:22:29,713 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-09 22:22:29,714 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-09 22:22:29,715 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-09 22:22:29,715 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-09 22:22:29,715 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-09 22:22:29,716 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-09 22:22:29,717 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-09 22:22:29,718 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-09 22:22:29,719 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-09 22:22:29,719 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-09 22:22:29,720 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-09 22:22:29,722 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-09 22:22:29,723 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-09 22:22:29,724 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-09 22:22:29,725 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-09 22:22:29,726 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-09 22:22:29,726 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-09 22:22:29,727 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-09 22:22:29,727 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-09 22:22:29,728 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-09 22:22:29,729 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-09 22:22:29,729 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-09 22:22:29,730 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-09 22:22:29,730 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-09 22:22:29,731 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-09 22:22:29,731 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-09 22:22:29,731 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-09 22:22:29,732 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-09 22:22:29,732 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-09 22:22:29,733 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-09 22:22:29,743 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-09 22:22:29,743 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-09 22:22:29,744 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-09 22:22:29,744 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-09 22:22:29,745 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-09 22:22:29,745 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-09 22:22:29,745 INFO L133 SettingsManager]: * Use SBE=true [2018-11-09 22:22:29,745 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-09 22:22:29,745 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-09 22:22:29,745 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-09 22:22:29,745 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-09 22:22:29,746 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-09 22:22:29,746 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-09 22:22:29,746 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-09 22:22:29,746 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-09 22:22:29,746 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-09 22:22:29,746 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-09 22:22:29,746 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-09 22:22:29,747 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-09 22:22:29,747 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-09 22:22:29,747 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-09 22:22:29,747 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-09 22:22:29,747 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-09 22:22:29,747 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-09 22:22:29,748 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-09 22:22:29,748 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-09 22:22:29,748 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-09 22:22:29,749 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-09 22:22:29,749 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/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 -> de94f0c7b8482738d507216e71ac3b33c5f9a9e3 [2018-11-09 22:22:29,771 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-09 22:22:29,779 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-09 22:22:29,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-09 22:22:29,782 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-09 22:22:29,783 INFO L276 PluginConnector]: CDTParser initialized [2018-11-09 22:22:29,783 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Cairo_nondet_false-no-overflow.c [2018-11-09 22:22:29,821 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/uautomizer/data/95ee8cdae/31311d37f4104597ad07ac64da00823c/FLAG6b5f55f05 [2018-11-09 22:22:30,210 INFO L298 CDTParser]: Found 1 translation units. [2018-11-09 22:22:30,210 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/sv-benchmarks/c/termination-crafted/Cairo_nondet_false-no-overflow.c [2018-11-09 22:22:30,214 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/uautomizer/data/95ee8cdae/31311d37f4104597ad07ac64da00823c/FLAG6b5f55f05 [2018-11-09 22:22:30,226 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/uautomizer/data/95ee8cdae/31311d37f4104597ad07ac64da00823c [2018-11-09 22:22:30,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-09 22:22:30,229 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-09 22:22:30,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-09 22:22:30,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-09 22:22:30,232 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-09 22:22:30,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:22:30" (1/1) ... [2018-11-09 22:22:30,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc2202b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:30, skipping insertion in model container [2018-11-09 22:22:30,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:22:30" (1/1) ... [2018-11-09 22:22:30,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-09 22:22:30,250 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-09 22:22:30,336 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 22:22:30,338 INFO L189 MainTranslator]: Completed pre-run [2018-11-09 22:22:30,346 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 22:22:30,355 INFO L193 MainTranslator]: Completed translation [2018-11-09 22:22:30,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:30 WrapperNode [2018-11-09 22:22:30,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-09 22:22:30,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-09 22:22:30,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-09 22:22:30,356 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-09 22:22:30,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:30" (1/1) ... [2018-11-09 22:22:30,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:30" (1/1) ... [2018-11-09 22:22:30,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:30" (1/1) ... [2018-11-09 22:22:30,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:30" (1/1) ... [2018-11-09 22:22:30,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:30" (1/1) ... [2018-11-09 22:22:30,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:30" (1/1) ... [2018-11-09 22:22:30,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:30" (1/1) ... [2018-11-09 22:22:30,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-09 22:22:30,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-09 22:22:30,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-09 22:22:30,375 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-09 22:22:30,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/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 [2018-11-09 22:22:30,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-09 22:22:30,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-09 22:22:30,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-09 22:22:30,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-09 22:22:30,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-09 22:22:30,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-09 22:22:30,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-09 22:22:30,550 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-09 22:22:30,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:22:30 BoogieIcfgContainer [2018-11-09 22:22:30,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-09 22:22:30,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-09 22:22:30,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-09 22:22:30,554 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-09 22:22:30,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:22:30" (1/3) ... [2018-11-09 22:22:30,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731540cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:22:30, skipping insertion in model container [2018-11-09 22:22:30,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:30" (2/3) ... [2018-11-09 22:22:30,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731540cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:22:30, skipping insertion in model container [2018-11-09 22:22:30,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:22:30" (3/3) ... [2018-11-09 22:22:30,557 INFO L112 eAbstractionObserver]: Analyzing ICFG Cairo_nondet_false-no-overflow.c [2018-11-09 22:22:30,563 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-09 22:22:30,567 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-09 22:22:30,577 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-09 22:22:30,595 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-09 22:22:30,596 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-09 22:22:30,596 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-09 22:22:30,596 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-09 22:22:30,596 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-09 22:22:30,596 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-09 22:22:30,596 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-09 22:22:30,597 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-09 22:22:30,597 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-09 22:22:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-09 22:22:30,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-09 22:22:30,611 INFO L367 BasicCegarLoop]: Found error trace [2018-11-09 22:22:30,612 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 22:22:30,613 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-09 22:22:30,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:22:30,617 INFO L82 PathProgramCache]: Analyzing trace with hash -217682939, now seen corresponding path program 1 times [2018-11-09 22:22:30,618 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:22:30,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:22:30,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:22:30,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:22:30,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:22:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:22:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:22:30,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-09 22:22:30,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-09 22:22:30,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-09 22:22:30,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-09 22:22:30,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-09 22:22:30,734 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-11-09 22:22:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-09 22:22:30,772 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-09 22:22:30,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-09 22:22:30,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-09 22:22:30,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-09 22:22:30,782 INFO L225 Difference]: With dead ends: 22 [2018-11-09 22:22:30,782 INFO L226 Difference]: Without dead ends: 11 [2018-11-09 22:22:30,785 INFO L605 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 [2018-11-09 22:22:30,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-11-09 22:22:30,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-09 22:22:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-09 22:22:30,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-11-09 22:22:30,813 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-11-09 22:22:30,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-09 22:22:30,814 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-11-09 22:22:30,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-09 22:22:30,814 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-11-09 22:22:30,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-09 22:22:30,814 INFO L367 BasicCegarLoop]: Found error trace [2018-11-09 22:22:30,815 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 22:22:30,815 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-09 22:22:30,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:22:30,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1841763534, now seen corresponding path program 1 times [2018-11-09 22:22:30,815 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:22:30,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:22:30,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:22:30,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:22:30,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:22:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:22:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:22:30,856 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-09 22:22:30,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-09 22:22:30,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-09 22:22:30,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-09 22:22:30,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-09 22:22:30,858 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-11-09 22:22:30,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-09 22:22:30,891 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-09 22:22:30,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-09 22:22:30,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-09 22:22:30,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-09 22:22:30,892 INFO L225 Difference]: With dead ends: 16 [2018-11-09 22:22:30,892 INFO L226 Difference]: Without dead ends: 15 [2018-11-09 22:22:30,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-09 22:22:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-09 22:22:30,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-09 22:22:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-09 22:22:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-09 22:22:30,897 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-11-09 22:22:30,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-09 22:22:30,898 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-09 22:22:30,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-09 22:22:30,898 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-09 22:22:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-09 22:22:30,898 INFO L367 BasicCegarLoop]: Found error trace [2018-11-09 22:22:30,898 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 22:22:30,899 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-09 22:22:30,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:22:30,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1468487574, now seen corresponding path program 1 times [2018-11-09 22:22:30,899 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:22:30,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:22:30,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:22:30,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:22:30,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:22:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:22:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:22:30,924 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-09 22:22:30,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:22:30 BoogieIcfgContainer [2018-11-09 22:22:30,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-09 22:22:30,938 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-09 22:22:30,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-09 22:22:30,938 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-09 22:22:30,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:22:30" (3/4) ... [2018-11-09 22:22:30,940 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-09 22:22:30,962 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3eb143a7-bdf4-43b2-899a-8b4798761958/bin-2019/uautomizer/witness.graphml [2018-11-09 22:22:30,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-09 22:22:30,962 INFO L168 Benchmark]: Toolchain (without parser) took 733.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -135.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-11-09 22:22:30,963 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 22:22:30,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.37 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-09 22:22:30,964 INFO L168 Benchmark]: Boogie Preprocessor took 18.60 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 22:22:30,964 INFO L168 Benchmark]: RCFGBuilder took 175.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-09 22:22:30,965 INFO L168 Benchmark]: TraceAbstraction took 386.42 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2018-11-09 22:22:30,965 INFO L168 Benchmark]: Witness Printer took 24.07 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-09 22:22:30,967 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 126.37 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.60 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 175.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 386.42 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * Witness Printer took 24.07 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x; [L14] x = __VERIFIER_nondet_int() [L15] COND TRUE x > __VERIFIER_nondet_int() [L16] COND TRUE x != 0 VAL [x=-2147483647] [L17] EXPR x - 1 [L17] x = x - 1 VAL [x=-2147483648] [L16] COND TRUE x != 0 VAL [x=-2147483648] [L17] x - 1 VAL [x=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 17 locations, 2 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 6 SDslu, 17 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 389 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...