./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/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 32bit --witnessprinter.graph.data.programhash 091ae9d10f73e4826e5ce40c092816900bcc502a ............................................................................................................................................................................................................................................................................ 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 0.2.0-a4ecdab [2020-11-28 03:10:04,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:10:04,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:10:04,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:10:04,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:10:04,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:10:04,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:10:04,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:10:04,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:10:04,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:10:04,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:10:04,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:10:04,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:10:04,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:10:04,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:10:04,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:10:04,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:10:04,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:10:04,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:10:04,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:10:04,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:10:04,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:10:04,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:10:04,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:10:04,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:10:04,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:10:04,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:10:04,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:10:04,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:10:04,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:10:04,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:10:04,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:10:04,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:10:04,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:10:04,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:10:04,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:10:04,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:10:04,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:10:04,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:10:04,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:10:04,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:10:04,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-28 03:10:04,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:10:04,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:10:04,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:10:04,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:10:04,871 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:10:04,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:10:04,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:10:04,872 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:10:04,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:10:04,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:10:04,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:10:04,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:10:04,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:10:04,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:10:04,874 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:10:04,875 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:10:04,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:10:04,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:10:04,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:10:04,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:10:04,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:10:04,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:10:04,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:10:04,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:10:04,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:10:04,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:10:04,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:10:04,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:10:04,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:10:04,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:10:04,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:10:04,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 091ae9d10f73e4826e5ce40c092816900bcc502a [2020-11-28 03:10:05,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:10:05,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:10:05,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:10:05,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:10:05,263 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:10:05,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i [2020-11-28 03:10:05,352 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/data/bebc5bdc1/905d9eeae267487f982a7031affd45c6/FLAG8300ac4e1 [2020-11-28 03:10:05,986 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:10:05,987 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/sv-benchmarks/c/loop-zilu/benchmark47_linear.i [2020-11-28 03:10:05,998 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/data/bebc5bdc1/905d9eeae267487f982a7031affd45c6/FLAG8300ac4e1 [2020-11-28 03:10:06,366 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/data/bebc5bdc1/905d9eeae267487f982a7031affd45c6 [2020-11-28 03:10:06,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:10:06,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:10:06,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:10:06,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:10:06,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:10:06,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:06" (1/1) ... [2020-11-28 03:10:06,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5261b895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06, skipping insertion in model container [2020-11-28 03:10:06,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:06" (1/1) ... [2020-11-28 03:10:06,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:10:06,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:10:06,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:10:06,663 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:10:06,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:10:06,721 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:10:06,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06 WrapperNode [2020-11-28 03:10:06,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:10:06,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:10:06,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:10:06,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:10:06,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06" (1/1) ... [2020-11-28 03:10:06,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06" (1/1) ... [2020-11-28 03:10:06,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:10:06,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:10:06,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:10:06,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:10:06,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06" (1/1) ... [2020-11-28 03:10:06,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06" (1/1) ... [2020-11-28 03:10:06,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06" (1/1) ... [2020-11-28 03:10:06,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06" (1/1) ... [2020-11-28 03:10:06,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06" (1/1) ... [2020-11-28 03:10:06,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06" (1/1) ... [2020-11-28 03:10:06,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06" (1/1) ... [2020-11-28 03:10:06,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:10:06,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:10:06,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:10:06,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:10:06,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:10:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:10:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:10:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:10:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:10:07,405 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:10:07,405 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:10:07,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:07 BoogieIcfgContainer [2020-11-28 03:10:07,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:10:07,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:10:07,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:10:07,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:10:07,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:10:06" (1/3) ... [2020-11-28 03:10:07,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af1c8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:07, skipping insertion in model container [2020-11-28 03:10:07,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:06" (2/3) ... [2020-11-28 03:10:07,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af1c8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:07, skipping insertion in model container [2020-11-28 03:10:07,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:07" (3/3) ... [2020-11-28 03:10:07,422 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark47_linear.i [2020-11-28 03:10:07,436 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:10:07,442 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-11-28 03:10:07,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-11-28 03:10:07,501 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:10:07,502 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:10:07,503 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:10:07,503 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:10:07,503 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:10:07,504 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:10:07,504 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:10:07,504 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:10:07,527 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-28 03:10:07,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:10:07,533 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:07,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:10:07,535 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:10:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:07,544 INFO L82 PathProgramCache]: Analyzing trace with hash 889575245, now seen corresponding path program 1 times [2020-11-28 03:10:07,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:07,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955158341] [2020-11-28 03:10:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:07,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955158341] [2020-11-28 03:10:07,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:07,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:10:07,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460429432] [2020-11-28 03:10:07,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:10:07,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:07,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:10:07,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:10:07,811 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-11-28 03:10:07,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:07,903 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-11-28 03:10:07,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:10:07,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 03:10:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:07,915 INFO L225 Difference]: With dead ends: 48 [2020-11-28 03:10:07,916 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:10:07,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:10:07,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:10:07,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 03:10:07,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:10:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-11-28 03:10:07,959 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 6 [2020-11-28 03:10:07,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:07,959 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-11-28 03:10:07,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:10:07,960 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-11-28 03:10:07,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:10:07,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:07,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:10:07,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:10:07,961 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:10:07,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:07,962 INFO L82 PathProgramCache]: Analyzing trace with hash 889575437, now seen corresponding path program 1 times [2020-11-28 03:10:07,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:07,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326357506] [2020-11-28 03:10:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:10:07,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:10:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:10:08,001 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:10:08,022 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:10:08,022 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:10:08,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:10:08,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:10:08 BoogieIcfgContainer [2020-11-28 03:10:08,056 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:10:08,057 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:10:08,057 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:10:08,058 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:10:08,059 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:07" (3/4) ... [2020-11-28 03:10:08,061 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:10:08,113 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ed31b91f-635d-4430-a42c-715adda1bc6e/bin/uautomizer/witness.graphml [2020-11-28 03:10:08,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:10:08,121 INFO L168 Benchmark]: Toolchain (without parser) took 1743.12 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 60.6 MB in the beginning and 71.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:08,122 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 46.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:08,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.59 ms. Allocated memory is still 88.1 MB. Free memory was 60.4 MB in the beginning and 65.9 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:08,125 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.74 ms. Allocated memory is still 88.1 MB. Free memory was 65.9 MB in the beginning and 64.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:08,126 INFO L168 Benchmark]: Boogie Preprocessor took 49.23 ms. Allocated memory is still 88.1 MB. Free memory was 64.4 MB in the beginning and 63.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:08,127 INFO L168 Benchmark]: RCFGBuilder took 582.02 ms. Allocated memory is still 88.1 MB. Free memory was 63.2 MB in the beginning and 49.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:08,131 INFO L168 Benchmark]: TraceAbstraction took 643.64 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 49.2 MB in the beginning and 72.6 MB in the end (delta: -23.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:08,132 INFO L168 Benchmark]: Witness Printer took 56.05 ms. Allocated memory is still 111.1 MB. Free memory was 72.6 MB in the beginning and 71.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:08,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 46.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.59 ms. Allocated memory is still 88.1 MB. Free memory was 60.4 MB in the beginning and 65.9 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.74 ms. Allocated memory is still 88.1 MB. Free memory was 65.9 MB in the beginning and 64.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.23 ms. Allocated memory is still 88.1 MB. Free memory was 64.4 MB in the beginning and 63.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 582.02 ms. Allocated memory is still 88.1 MB. Free memory was 63.2 MB in the beginning and 49.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 643.64 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 49.2 MB in the beginning and 72.6 MB in the end (delta: -23.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 56.05 ms. Allocated memory is still 111.1 MB. Free memory was 72.6 MB in the beginning and 71.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x