./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.10.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b61f9d11a7993733a89da24850eba50014a42dab ............................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-7b2dab5 [2020-12-09 19:37:43,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:37:43,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:37:43,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:37:43,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:37:43,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:37:43,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:37:43,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:37:43,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:37:43,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:37:43,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:37:43,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:37:43,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:37:43,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:37:43,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:37:43,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:37:43,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:37:43,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:37:43,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:37:43,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:37:43,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:37:43,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:37:43,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:37:43,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:37:43,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:37:43,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:37:43,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:37:43,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:37:43,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:37:43,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:37:43,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:37:43,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:37:43,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:37:43,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:37:43,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:37:43,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:37:43,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:37:43,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:37:43,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:37:43,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:37:43,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:37:43,329 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 19:37:43,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:37:43,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:37:43,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:37:43,346 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:37:43,346 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:37:43,347 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:37:43,347 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:37:43,347 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:37:43,347 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:37:43,347 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:37:43,347 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:37:43,347 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:37:43,347 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:37:43,348 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:37:43,348 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:37:43,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:37:43,348 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 19:37:43,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:37:43,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:37:43,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:37:43,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:37:43,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:37:43,349 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 19:37:43,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:37:43,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:37:43,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:37:43,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:37:43,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:37:43,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:37:43,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:37:43,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:37:43,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:37:43,350 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:37:43,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:37:43,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:37:43,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:37:43,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:37:43,351 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b61f9d11a7993733a89da24850eba50014a42dab [2020-12-09 19:37:43,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:37:43,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:37:43,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:37:43,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:37:43,546 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:37:43,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.10.c [2020-12-09 19:37:43,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/data/39540d6e8/70cb3848817d488d93f8cfd62f7019be/FLAG6f71237ee [2020-12-09 19:37:43,938 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:37:43,938 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.10.c [2020-12-09 19:37:43,943 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/data/39540d6e8/70cb3848817d488d93f8cfd62f7019be/FLAG6f71237ee [2020-12-09 19:37:43,952 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/data/39540d6e8/70cb3848817d488d93f8cfd62f7019be [2020-12-09 19:37:43,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:37:43,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:37:43,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:37:43,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:37:43,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:37:43,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:37:43" (1/1) ... [2020-12-09 19:37:43,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65eb4619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:43, skipping insertion in model container [2020-12-09 19:37:43,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:37:43" (1/1) ... [2020-12-09 19:37:43,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:37:43,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:37:44,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:37:44,078 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:37:44,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:37:44,095 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:37:44,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:44 WrapperNode [2020-12-09 19:37:44,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:37:44,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:37:44,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:37:44,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:37:44,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:44" (1/1) ... [2020-12-09 19:37:44,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:44" (1/1) ... [2020-12-09 19:37:44,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:37:44,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:37:44,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:37:44,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:37:44,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:44" (1/1) ... [2020-12-09 19:37:44,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:44" (1/1) ... [2020-12-09 19:37:44,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:44" (1/1) ... [2020-12-09 19:37:44,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:44" (1/1) ... [2020-12-09 19:37:44,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:44" (1/1) ... [2020-12-09 19:37:44,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:44" (1/1) ... [2020-12-09 19:37:44,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:44" (1/1) ... [2020-12-09 19:37:44,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:37:44,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:37:44,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:37:44,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:37:44,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/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 [2020-12-09 19:37:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:37:44,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:37:44,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:37:44,327 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 19:37:44,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:37:44 BoogieIcfgContainer [2020-12-09 19:37:44,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:37:44,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:37:44,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:37:44,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:37:44,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:37:43" (1/3) ... [2020-12-09 19:37:44,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531b2c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:37:44, skipping insertion in model container [2020-12-09 19:37:44,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:44" (2/3) ... [2020-12-09 19:37:44,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531b2c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:37:44, skipping insertion in model container [2020-12-09 19:37:44,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:37:44" (3/3) ... [2020-12-09 19:37:44,336 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.10.c [2020-12-09 19:37:44,349 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:37:44,352 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 19:37:44,361 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 19:37:44,377 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:37:44,377 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:37:44,377 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:37:44,378 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:37:44,378 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:37:44,378 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:37:44,378 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:37:44,378 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:37:44,386 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 19:37:44,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 19:37:44,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:37:44,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 19:37:44,390 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:37:44,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:37:44,394 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-12-09 19:37:44,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:37:44,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202911037] [2020-12-09 19:37:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:37:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:37:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:44,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202911037] [2020-12-09 19:37:44,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:37:44,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:37:44,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109774688] [2020-12-09 19:37:44,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:37:44,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:37:44,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:37:44,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:37:44,524 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-12-09 19:37:44,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:37:44,570 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-12-09 19:37:44,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:37:44,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-12-09 19:37:44,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:37:44,577 INFO L225 Difference]: With dead ends: 11 [2020-12-09 19:37:44,577 INFO L226 Difference]: Without dead ends: 9 [2020-12-09 19:37:44,579 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 [2020-12-09 19:37:44,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-09 19:37:44,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-09 19:37:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 19:37:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-09 19:37:44,599 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2020-12-09 19:37:44,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:37:44,599 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-09 19:37:44,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:37:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-09 19:37:44,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 19:37:44,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:37:44,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 19:37:44,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:37:44,600 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:37:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:37:44,601 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-12-09 19:37:44,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:37:44,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592232122] [2020-12-09 19:37:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:37:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:37:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:44,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592232122] [2020-12-09 19:37:44,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:37:44,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:37:44,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786365673] [2020-12-09 19:37:44,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:37:44,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:37:44,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:37:44,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:37:44,631 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-12-09 19:37:44,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:37:44,659 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-12-09 19:37:44,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:37:44,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 19:37:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:37:44,660 INFO L225 Difference]: With dead ends: 9 [2020-12-09 19:37:44,660 INFO L226 Difference]: Without dead ends: 8 [2020-12-09 19:37:44,661 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 [2020-12-09 19:37:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-09 19:37:44,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-09 19:37:44,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 19:37:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-09 19:37:44,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2020-12-09 19:37:44,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:37:44,663 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-09 19:37:44,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:37:44,664 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-09 19:37:44,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 19:37:44,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:37:44,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 19:37:44,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:37:44,664 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:37:44,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:37:44,665 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-12-09 19:37:44,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:37:44,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092510610] [2020-12-09 19:37:44,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:37:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:37:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:44,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092510610] [2020-12-09 19:37:44,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:37:44,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:37:44,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775234980] [2020-12-09 19:37:44,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:37:44,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:37:44,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:37:44,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:37:44,690 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2020-12-09 19:37:44,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:37:44,706 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-12-09 19:37:44,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:37:44,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 19:37:44,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:37:44,707 INFO L225 Difference]: With dead ends: 9 [2020-12-09 19:37:44,708 INFO L226 Difference]: Without dead ends: 8 [2020-12-09 19:37:44,708 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 [2020-12-09 19:37:44,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-09 19:37:44,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-12-09 19:37:44,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-09 19:37:44,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-12-09 19:37:44,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2020-12-09 19:37:44,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:37:44,711 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-12-09 19:37:44,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:37:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-12-09 19:37:44,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:37:44,711 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:37:44,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:37:44,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 19:37:44,712 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:37:44,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:37:44,713 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-12-09 19:37:44,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:37:44,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620102562] [2020-12-09 19:37:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:37:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:37:44,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:37:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:37:44,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:37:44,743 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:37:44,743 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:37:44,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 19:37:44,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:37:44 BoogieIcfgContainer [2020-12-09 19:37:44,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:37:44,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:37:44,759 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:37:44,759 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:37:44,759 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:37:44" (3/4) ... [2020-12-09 19:37:44,761 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 19:37:44,788 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_05004193-213c-42e1-a4d8-3dec589913be/bin/utaipan/witness.graphml [2020-12-09 19:37:44,788 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:37:44,790 INFO L168 Benchmark]: Toolchain (without parser) took 834.05 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 41.9 MB in the beginning and 82.4 MB in the end (delta: -40.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:37:44,790 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 81.8 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:37:44,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.60 ms. Allocated memory is still 81.8 MB. Free memory was 41.7 MB in the beginning and 59.6 MB in the end (delta: -18.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:44,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.93 ms. Allocated memory is still 81.8 MB. Free memory was 59.6 MB in the beginning and 58.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:37:44,791 INFO L168 Benchmark]: Boogie Preprocessor took 12.05 ms. Allocated memory is still 81.8 MB. Free memory was 58.4 MB in the beginning and 57.5 MB in the end (delta: 879.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:44,792 INFO L168 Benchmark]: RCFGBuilder took 199.38 ms. Allocated memory is still 81.8 MB. Free memory was 57.5 MB in the beginning and 57.3 MB in the end (delta: 205.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:44,792 INFO L168 Benchmark]: TraceAbstraction took 428.77 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 56.9 MB in the beginning and 84.3 MB in the end (delta: -27.4 MB). Peak memory consumption was 2.0 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:44,792 INFO L168 Benchmark]: Witness Printer took 29.49 ms. Allocated memory is still 109.1 MB. Free memory was 84.3 MB in the beginning and 82.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:44,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 81.8 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 139.60 ms. Allocated memory is still 81.8 MB. Free memory was 41.7 MB in the beginning and 59.6 MB in the end (delta: -18.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 19.93 ms. Allocated memory is still 81.8 MB. Free memory was 59.6 MB in the beginning and 58.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.05 ms. Allocated memory is still 81.8 MB. Free memory was 58.4 MB in the beginning and 57.5 MB in the end (delta: 879.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 199.38 ms. Allocated memory is still 81.8 MB. Free memory was 57.5 MB in the beginning and 57.3 MB in the end (delta: 205.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 428.77 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 56.9 MB in the beginning and 84.3 MB in the end (delta: -27.4 MB). Peak memory consumption was 2.0 MB. Max. memory is 16.1 GB. * Witness Printer took 29.49 ms. Allocated memory is still 109.1 MB. Free memory was 84.3 MB in the beginning and 82.4 MB in the end (delta: 1.9 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: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] COND TRUE x > 0 && y < 0 [L27] EXPR x + y [L27] x = x + y [L28] y - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 17 SDslu, 0 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 131 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...