./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/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 46206f7a86b26e5772618ef155399955c07418b5 ................................................................................................................................................................................................................................................................................................................ 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 02:56:49,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:49,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:49,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:49,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:49,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:49,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:49,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:49,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:49,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:49,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:49,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:49,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:49,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:49,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:49,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:49,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:49,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:49,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:49,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:49,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:49,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:49,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:49,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:49,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:49,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:49,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:49,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:49,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:49,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:49,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:49,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:49,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:49,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:49,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:49,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:49,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:49,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:49,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:49,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:49,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:49,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 02:56:49,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:49,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:49,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:49,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:49,907 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:49,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:49,908 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:49,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:49,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:49,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:49,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:49,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:49,909 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 02:56:49,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:49,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:49,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:49,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:49,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:49,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:49,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:49,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:49,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:49,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:49,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:49,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:49,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:49,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:49,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:49,912 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_7da506eb-4002-40d7-856c-5559b1281226/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46206f7a86b26e5772618ef155399955c07418b5 [2020-11-28 02:56:50,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:50,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:50,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:50,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:50,226 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:50,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c [2020-11-28 02:56:50,295 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/bin/uautomizer/data/b977745cc/abdd032440324ff4b0a5e5ea5009642f/FLAG2e278a4a6 [2020-11-28 02:56:50,847 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:50,850 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c [2020-11-28 02:56:50,861 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/bin/uautomizer/data/b977745cc/abdd032440324ff4b0a5e5ea5009642f/FLAG2e278a4a6 [2020-11-28 02:56:51,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/bin/uautomizer/data/b977745cc/abdd032440324ff4b0a5e5ea5009642f [2020-11-28 02:56:51,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:51,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:51,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:51,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:51,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:51,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7414a8b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51, skipping insertion in model container [2020-11-28 02:56:51,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:51,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:51,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:51,450 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:51,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:51,478 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:51,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51 WrapperNode [2020-11-28 02:56:51,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:51,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:51,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:51,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:51,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:51,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:51,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:51,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:51,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:51,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:51,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:51,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:51,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/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 02:56:51,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:51,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:51,852 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:51,853 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 02:56:51,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:51 BoogieIcfgContainer [2020-11-28 02:56:51,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:51,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:51,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:51,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:51,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:51" (1/3) ... [2020-11-28 02:56:51,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27386aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:51, skipping insertion in model container [2020-11-28 02:56:51,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (2/3) ... [2020-11-28 02:56:51,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27386aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:51, skipping insertion in model container [2020-11-28 02:56:51,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:51" (3/3) ... [2020-11-28 02:56:51,863 INFO L111 eAbstractionObserver]: Analyzing ICFG Toulouse-BranchesToLoop-1.c [2020-11-28 02:56:51,874 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:51,878 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 02:56:51,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 02:56:51,937 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:51,952 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:51,952 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:51,953 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:51,953 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:51,953 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:51,953 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:51,953 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:51,966 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-28 02:56:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 02:56:51,993 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:51,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 02:56:51,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:51,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:51,999 INFO L82 PathProgramCache]: Analyzing trace with hash 957637, now seen corresponding path program 1 times [2020-11-28 02:56:52,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:52,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217400300] [2020-11-28 02:56:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:52,262 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 02:56:52,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217400300] [2020-11-28 02:56:52,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:52,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:52,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932670441] [2020-11-28 02:56:52,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:52,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:52,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:52,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:52,295 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-11-28 02:56:52,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:52,402 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-11-28 02:56:52,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:52,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 02:56:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:52,413 INFO L225 Difference]: With dead ends: 19 [2020-11-28 02:56:52,414 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 02:56:52,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:52,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 02:56:52,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 02:56:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 02:56:52,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-28 02:56:52,457 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2020-11-28 02:56:52,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:52,458 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-28 02:56:52,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:52,458 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-28 02:56:52,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 02:56:52,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:52,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:52,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:52,462 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:52,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:52,467 INFO L82 PathProgramCache]: Analyzing trace with hash 29686796, now seen corresponding path program 1 times [2020-11-28 02:56:52,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:52,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111171005] [2020-11-28 02:56:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:52,553 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 02:56:52,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111171005] [2020-11-28 02:56:52,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:52,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:52,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793944924] [2020-11-28 02:56:52,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:52,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:52,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:52,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:52,557 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2020-11-28 02:56:52,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:52,629 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-11-28 02:56:52,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:52,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 02:56:52,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:52,631 INFO L225 Difference]: With dead ends: 14 [2020-11-28 02:56:52,631 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 02:56:52,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 02:56:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 02:56:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 02:56:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-11-28 02:56:52,636 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2020-11-28 02:56:52,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:52,636 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-28 02:56:52,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:52,638 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-11-28 02:56:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 02:56:52,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:52,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:52,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:52,641 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:52,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:52,643 INFO L82 PathProgramCache]: Analyzing trace with hash 29746378, now seen corresponding path program 1 times [2020-11-28 02:56:52,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:52,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995120370] [2020-11-28 02:56:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:52,665 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:52,673 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:52,691 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:52,692 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:56:52,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:56:52,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:52 BoogieIcfgContainer [2020-11-28 02:56:52,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:52,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:52,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:52,716 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:52,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:51" (3/4) ... [2020-11-28 02:56:52,720 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:56:52,766 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7da506eb-4002-40d7-856c-5559b1281226/bin/uautomizer/witness.graphml [2020-11-28 02:56:52,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:52,769 INFO L168 Benchmark]: Toolchain (without parser) took 1548.29 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 53.9 MB in the beginning and 59.5 MB in the end (delta: -5.6 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:52,769 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 83.9 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:52,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.02 ms. Allocated memory is still 83.9 MB. Free memory was 53.7 MB in the beginning and 62.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:52,770 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.67 ms. Allocated memory is still 83.9 MB. Free memory was 62.8 MB in the beginning and 61.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:52,771 INFO L168 Benchmark]: Boogie Preprocessor took 24.03 ms. Allocated memory is still 83.9 MB. Free memory was 61.4 MB in the beginning and 60.5 MB in the end (delta: 821.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:52,772 INFO L168 Benchmark]: RCFGBuilder took 305.94 ms. Allocated memory is still 83.9 MB. Free memory was 60.5 MB in the beginning and 51.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:52,772 INFO L168 Benchmark]: TraceAbstraction took 858.57 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 50.9 MB in the beginning and 61.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:52,773 INFO L168 Benchmark]: Witness Printer took 51.71 ms. Allocated memory is still 100.7 MB. Free memory was 61.1 MB in the beginning and 59.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:52,776 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 83.9 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.02 ms. Allocated memory is still 83.9 MB. Free memory was 53.7 MB in the beginning and 62.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.67 ms. Allocated memory is still 83.9 MB. Free memory was 62.8 MB in the beginning and 61.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.03 ms. Allocated memory is still 83.9 MB. Free memory was 61.4 MB in the beginning and 60.5 MB in the end (delta: 821.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 305.94 ms. Allocated memory is still 83.9 MB. Free memory was 60.5 MB in the beginning and 51.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 858.57 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 50.9 MB in the beginning and 61.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 51.71 ms. Allocated memory is still 100.7 MB. Free memory was 61.1 MB in the beginning and 59.5 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: [L14] int x; [L15] int y; [L16] int z; [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L19] COND FALSE !(__VERIFIER_nondet_int() != 0) [L22] x = -1 [L24] COND TRUE y<100 && z<100 [L25] y+x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 24 SDslu, 3 SDs, 0 SdLazy, 31 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...