./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.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_800aba3f-4b6c-482b-aae2-7c972c74f0d9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.c -s /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/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 9f46c7b2b1e4ea0f04ba596f18cee8c318356c44 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-20 09:13:12,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:13:12,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:13:12,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:13:12,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:13:12,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:13:12,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:13:12,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:13:12,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:13:12,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:13:12,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:13:12,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:13:12,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:13:12,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:13:12,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:13:12,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:13:12,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:13:12,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:13:12,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:13:12,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:13:12,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:13:12,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:13:12,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:13:12,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:13:12,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:13:12,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:13:12,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:13:12,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:13:12,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:13:12,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:13:12,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:13:12,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:13:12,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:13:12,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:13:12,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:13:12,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:13:12,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:13:12,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:13:12,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:13:12,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:13:12,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:13:12,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-20 09:13:12,668 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:13:12,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:13:12,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:13:12,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:13:12,669 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:13:12,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:13:12,670 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 09:13:12,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:13:12,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:13:12,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 09:13:12,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 09:13:12,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 09:13:12,671 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-20 09:13:12,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:13:12,671 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:13:12,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 09:13:12,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:13:12,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:13:12,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 09:13:12,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 09:13:12,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 09:13:12,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:13:12,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 09:13:12,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 09:13:12,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 09:13:12,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 09:13:12,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 09:13:12,673 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_800aba3f-4b6c-482b-aae2-7c972c74f0d9/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 -> 9f46c7b2b1e4ea0f04ba596f18cee8c318356c44 [2019-11-20 09:13:12,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:13:12,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:13:12,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:13:12,832 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:13:12,832 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:13:12,833 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.c [2019-11-20 09:13:12,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/bin/uautomizer/data/d49198179/27c134080460431d940a5e4145511912/FLAG2af4a198f [2019-11-20 09:13:13,287 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:13:13,288 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.c [2019-11-20 09:13:13,295 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/bin/uautomizer/data/d49198179/27c134080460431d940a5e4145511912/FLAG2af4a198f [2019-11-20 09:13:13,708 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/bin/uautomizer/data/d49198179/27c134080460431d940a5e4145511912 [2019-11-20 09:13:13,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:13:13,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:13:13,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:13:13,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:13:13,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:13:13,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:13:13" (1/1) ... [2019-11-20 09:13:13,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d21809d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:13, skipping insertion in model container [2019-11-20 09:13:13,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:13:13" (1/1) ... [2019-11-20 09:13:13,731 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:13:13,744 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:13:13,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:13:13,932 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:13:14,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:13:14,025 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:13:14,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:14 WrapperNode [2019-11-20 09:13:14,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:13:14,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:13:14,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:13:14,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:13:14,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:14" (1/1) ... [2019-11-20 09:13:14,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:14" (1/1) ... [2019-11-20 09:13:14,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:13:14,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:13:14,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:13:14,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:13:14,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:14" (1/1) ... [2019-11-20 09:13:14,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:14" (1/1) ... [2019-11-20 09:13:14,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:14" (1/1) ... [2019-11-20 09:13:14,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:14" (1/1) ... [2019-11-20 09:13:14,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:14" (1/1) ... [2019-11-20 09:13:14,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:14" (1/1) ... [2019-11-20 09:13:14,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:14" (1/1) ... [2019-11-20 09:13:14,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:13:14,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:13:14,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:13:14,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:13:14,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/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 09:13:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:13:14,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:13:14,333 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:13:14,333 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 09:13:14,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:13:14 BoogieIcfgContainer [2019-11-20 09:13:14,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:13:14,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 09:13:14,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 09:13:14,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 09:13:14,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:13:13" (1/3) ... [2019-11-20 09:13:14,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4833d690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:13:14, skipping insertion in model container [2019-11-20 09:13:14,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:14" (2/3) ... [2019-11-20 09:13:14,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4833d690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:13:14, skipping insertion in model container [2019-11-20 09:13:14,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:13:14" (3/3) ... [2019-11-20 09:13:14,342 INFO L109 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex1.03.c [2019-11-20 09:13:14,351 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 09:13:14,356 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-20 09:13:14,366 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-20 09:13:14,390 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 09:13:14,391 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 09:13:14,391 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 09:13:14,391 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:13:14,391 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:13:14,392 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 09:13:14,392 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:13:14,392 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 09:13:14,405 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-20 09:13:14,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 09:13:14,410 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:13:14,411 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 09:13:14,411 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 09:13:14,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:13:14,416 INFO L82 PathProgramCache]: Analyzing trace with hash 959367, now seen corresponding path program 1 times [2019-11-20 09:13:14,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:13:14,423 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047229555] [2019-11-20 09:13:14,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:13:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:13:14,549 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 09:13:14,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047229555] [2019-11-20 09:13:14,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:13:14,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 09:13:14,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328627877] [2019-11-20 09:13:14,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 09:13:14,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:13:14,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 09:13:14,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 09:13:14,587 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-11-20 09:13:14,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:13:14,655 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-11-20 09:13:14,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 09:13:14,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-20 09:13:14,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:13:14,663 INFO L225 Difference]: With dead ends: 21 [2019-11-20 09:13:14,663 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 09:13:14,665 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 09:13:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 09:13:14,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-11-20 09:13:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 09:13:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-11-20 09:13:14,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 4 [2019-11-20 09:13:14,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:13:14,691 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-20 09:13:14,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 09:13:14,691 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2019-11-20 09:13:14,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 09:13:14,691 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:13:14,692 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 09:13:14,692 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 09:13:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:13:14,692 INFO L82 PathProgramCache]: Analyzing trace with hash 29740420, now seen corresponding path program 1 times [2019-11-20 09:13:14,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:13:14,693 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627090484] [2019-11-20 09:13:14,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:13:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:13:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:13:14,727 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:13:14,727 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 09:13:14,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:13:14 BoogieIcfgContainer [2019-11-20 09:13:14,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 09:13:14,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 09:13:14,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 09:13:14,744 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 09:13:14,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:13:14" (3/4) ... [2019-11-20 09:13:14,746 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 09:13:14,777 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_800aba3f-4b6c-482b-aae2-7c972c74f0d9/bin/uautomizer/witness.graphml [2019-11-20 09:13:14,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 09:13:14,780 INFO L168 Benchmark]: Toolchain (without parser) took 1067.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -125.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:13:14,780 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:13:14,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-20 09:13:14,782 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:13:14,782 INFO L168 Benchmark]: Boogie Preprocessor took 24.30 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:13:14,783 INFO L168 Benchmark]: RCFGBuilder took 255.21 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 09:13:14,784 INFO L168 Benchmark]: TraceAbstraction took 407.79 ms. Allocated memory is still 1.1 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. [2019-11-20 09:13:14,784 INFO L168 Benchmark]: Witness Printer took 33.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:13:14,789 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 313.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.30 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 255.21 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 407.79 ms. Allocated memory is still 1.1 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 33.75 ms. Allocated memory is still 1.1 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: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, oldx; [L24] x = __VERIFIER_nondet_int() [L25] oldx = __VERIFIER_nondet_int() [L26] x > 1 && -2*x == oldx [L26] -2*x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 16 SDslu, 3 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 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...