./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.09.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_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.09.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/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 84b0699039fdd709a3306cfa354f9fcc70db171e .................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-29 23:31:00,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:31:00,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:31:01,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:31:01,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:31:01,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:31:01,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:31:01,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:31:01,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:31:01,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:31:01,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:31:01,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:31:01,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:31:01,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:31:01,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:31:01,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:31:01,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:31:01,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:31:01,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:31:01,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:31:01,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:31:01,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:31:01,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:31:01,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:31:01,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:31:01,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:31:01,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:31:01,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:31:01,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:31:01,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:31:01,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:31:01,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:31:01,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:31:01,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:31:01,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:31:01,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:31:01,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:31:01,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:31:01,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:31:01,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:31:01,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:31:01,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 23:31:01,201 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:31:01,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:31:01,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:31:01,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:31:01,203 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:31:01,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:31:01,204 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:31:01,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:31:01,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:31:01,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:31:01,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:31:01,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:31:01,206 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 23:31:01,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:31:01,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:31:01,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:31:01,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:31:01,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:31:01,207 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:31:01,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:31:01,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:31:01,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:31:01,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:31:01,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:31:01,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:31:01,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:31:01,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:31:01,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:31:01,209 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_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84b0699039fdd709a3306cfa354f9fcc70db171e [2020-11-29 23:31:01,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:31:01,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:31:01,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:31:01,555 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:31:01,557 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:31:01,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.09.c [2020-11-29 23:31:01,637 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/bin/uautomizer/data/17924844e/3128029aa197454cb56cfdcaefc8aad2/FLAGe115810cd [2020-11-29 23:31:02,167 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:31:02,168 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.09.c [2020-11-29 23:31:02,173 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/bin/uautomizer/data/17924844e/3128029aa197454cb56cfdcaefc8aad2/FLAGe115810cd [2020-11-29 23:31:02,545 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/bin/uautomizer/data/17924844e/3128029aa197454cb56cfdcaefc8aad2 [2020-11-29 23:31:02,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:31:02,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:31:02,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:31:02,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:31:02,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:31:02,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:31:02" (1/1) ... [2020-11-29 23:31:02,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413fa5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02, skipping insertion in model container [2020-11-29 23:31:02,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:31:02" (1/1) ... [2020-11-29 23:31:02,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:31:02,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:31:02,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:31:02,763 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:31:02,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:31:02,823 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:31:02,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02 WrapperNode [2020-11-29 23:31:02,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:31:02,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:31:02,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:31:02,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:31:02,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02" (1/1) ... [2020-11-29 23:31:02,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02" (1/1) ... [2020-11-29 23:31:02,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:31:02,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:31:02,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:31:02,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:31:02,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02" (1/1) ... [2020-11-29 23:31:02,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02" (1/1) ... [2020-11-29 23:31:02,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02" (1/1) ... [2020-11-29 23:31:02,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02" (1/1) ... [2020-11-29 23:31:02,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02" (1/1) ... [2020-11-29 23:31:02,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02" (1/1) ... [2020-11-29 23:31:02,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02" (1/1) ... [2020-11-29 23:31:02,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:31:02,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:31:02,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:31:02,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:31:02,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/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 [2020-11-29 23:31:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:31:02,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:31:03,194 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:31:03,195 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 23:31:03,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:31:03 BoogieIcfgContainer [2020-11-29 23:31:03,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:31:03,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:31:03,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:31:03,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:31:03,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:31:02" (1/3) ... [2020-11-29 23:31:03,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e068e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:31:03, skipping insertion in model container [2020-11-29 23:31:03,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:02" (2/3) ... [2020-11-29 23:31:03,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e068e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:31:03, skipping insertion in model container [2020-11-29 23:31:03,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:31:03" (3/3) ... [2020-11-29 23:31:03,205 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.09.c [2020-11-29 23:31:03,216 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:31:03,220 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-29 23:31:03,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-29 23:31:03,269 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:31:03,270 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:31:03,272 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:31:03,272 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:31:03,272 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:31:03,272 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:31:03,277 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:31:03,277 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:31:03,293 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-29 23:31:03,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-29 23:31:03,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:03,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-29 23:31:03,300 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.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:31:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:03,305 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-29 23:31:03,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:03,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208001517] [2020-11-29 23:31:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:03,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208001517] [2020-11-29 23:31:03,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:31:03,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:31:03,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854800648] [2020-11-29 23:31:03,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:31:03,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:03,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:31:03,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:31:03,483 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-11-29 23:31:03,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:03,714 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-11-29 23:31:03,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:31:03,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-29 23:31:03,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:03,724 INFO L225 Difference]: With dead ends: 26 [2020-11-29 23:31:03,725 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 23:31:03,730 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 [2020-11-29 23:31:03,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 23:31:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 23:31:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 23:31:03,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-29 23:31:03,786 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 3 [2020-11-29 23:31:03,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:03,786 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-29 23:31:03,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:31:03,787 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-29 23:31:03,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 23:31:03,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:03,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 23:31:03,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:31:03,789 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.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:31:03,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:03,793 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-11-29 23:31:03,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:03,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143420405] [2020-11-29 23:31:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:03,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143420405] [2020-11-29 23:31:03,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:31:03,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 23:31:03,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554225100] [2020-11-29 23:31:03,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:31:03,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:03,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:31:03,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:31:03,837 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2020-11-29 23:31:03,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:03,926 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-29 23:31:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:31:03,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-29 23:31:03,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:03,928 INFO L225 Difference]: With dead ends: 29 [2020-11-29 23:31:03,928 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 23:31:03,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:31:03,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 23:31:03,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2020-11-29 23:31:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 23:31:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-29 23:31:03,934 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 4 [2020-11-29 23:31:03,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:03,934 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-29 23:31:03,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:31:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-29 23:31:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 23:31:03,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:03,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 23:31:03,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:31:03,938 INFO L429 AbstractCegarLoop]: === Iteration 3 === [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.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:31:03,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:03,939 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-11-29 23:31:03,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:03,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841278358] [2020-11-29 23:31:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:04,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841278358] [2020-11-29 23:31:04,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:31:04,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:31:04,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983634658] [2020-11-29 23:31:04,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:31:04,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:04,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:31:04,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:31:04,018 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2020-11-29 23:31:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:04,172 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-11-29 23:31:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:31:04,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-29 23:31:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:04,174 INFO L225 Difference]: With dead ends: 30 [2020-11-29 23:31:04,174 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 23:31:04,175 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 [2020-11-29 23:31:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 23:31:04,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-11-29 23:31:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 23:31:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-29 23:31:04,180 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2020-11-29 23:31:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:04,181 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-29 23:31:04,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:31:04,181 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-29 23:31:04,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 23:31:04,181 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:04,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:31:04,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:31:04,182 INFO L429 AbstractCegarLoop]: === Iteration 4 === [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.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:31:04,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:04,183 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-11-29 23:31:04,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:04,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135894600] [2020-11-29 23:31:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:31:04,200 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:31:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:31:04,209 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:31:04,224 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:31:04,224 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:31:04,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:31:04,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:31:04 BoogieIcfgContainer [2020-11-29 23:31:04,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:31:04,249 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:31:04,249 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:31:04,249 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:31:04,250 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:31:03" (3/4) ... [2020-11-29 23:31:04,253 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:31:04,289 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4783b168-6106-4c1d-90ff-d1e44d2a1ee2/bin/uautomizer/witness.graphml [2020-11-29 23:31:04,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:31:04,291 INFO L168 Benchmark]: Toolchain (without parser) took 1738.30 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 67.5 MB in the beginning and 98.5 MB in the end (delta: -31.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:31:04,291 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 102.8 MB. Free memory was 75.5 MB in the beginning and 75.5 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:31:04,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.29 ms. Allocated memory is still 102.8 MB. Free memory was 67.3 MB in the beginning and 79.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:04,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.15 ms. Allocated memory is still 102.8 MB. Free memory was 79.9 MB in the beginning and 78.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:31:04,293 INFO L168 Benchmark]: Boogie Preprocessor took 36.85 ms. Allocated memory is still 102.8 MB. Free memory was 78.9 MB in the beginning and 78.0 MB in the end (delta: 902.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:31:04,294 INFO L168 Benchmark]: RCFGBuilder took 299.58 ms. Allocated memory is still 102.8 MB. Free memory was 77.8 MB in the beginning and 67.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:04,295 INFO L168 Benchmark]: TraceAbstraction took 1050.00 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 67.5 MB in the beginning and 99.8 MB in the end (delta: -32.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:31:04,295 INFO L168 Benchmark]: Witness Printer took 40.10 ms. Allocated memory is still 125.8 MB. Free memory was 99.8 MB in the beginning and 98.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:31:04,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 102.8 MB. Free memory was 75.5 MB in the beginning and 75.5 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.29 ms. Allocated memory is still 102.8 MB. Free memory was 67.3 MB in the beginning and 79.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.15 ms. Allocated memory is still 102.8 MB. Free memory was 79.9 MB in the beginning and 78.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.85 ms. Allocated memory is still 102.8 MB. Free memory was 78.9 MB in the beginning and 78.0 MB in the end (delta: 902.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 299.58 ms. Allocated memory is still 102.8 MB. Free memory was 77.8 MB in the beginning and 67.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1050.00 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 67.5 MB in the beginning and 99.8 MB in the end (delta: -32.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 40.10 ms. Allocated memory is still 125.8 MB. Free memory was 99.8 MB in the beginning and 98.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, n; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] n = __VERIFIER_nondet_int() [L27] COND TRUE x > 0 && x < n [L28] EXPR -x [L28] -x + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 34 SDslu, 15 SDs, 0 SdLazy, 74 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, 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, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...