./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 3428809e66c8ffa9373e37ec3d02a46642c7f8bc ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.1-dev-20ed64e [2021-08-27 10:55:33,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:55:33,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:55:33,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:55:33,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:55:33,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:55:33,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:55:33,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:55:33,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:55:33,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:55:33,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:55:33,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:55:33,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:55:33,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:55:33,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:55:33,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:55:33,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:55:33,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:55:33,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:55:33,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:55:33,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:55:33,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:55:33,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:55:33,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:55:33,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:55:33,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:55:33,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:55:33,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:55:33,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:55:33,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:55:33,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:55:33,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:55:33,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:55:33,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:55:33,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:55:33,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:55:33,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:55:33,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:55:33,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:55:33,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:55:33,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:55:33,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:55:33,397 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:55:33,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:55:33,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:55:33,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:55:33,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:55:33,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:55:33,401 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:55:33,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:55:33,401 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:55:33,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:55:33,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:55:33,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:55:33,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:55:33,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:55:33,403 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:55:33,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:55:33,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:55:33,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:55:33,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:55:33,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:55:33,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:55:33,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:55:33,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:55:33,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:55:33,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:55:33,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:55:33,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:55:33,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:55:33,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:55:33,417 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3428809e66c8ffa9373e37ec3d02a46642c7f8bc [2021-08-27 10:55:33,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:55:33,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:55:33,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:55:33,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:55:33,750 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:55:33,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c [2021-08-27 10:55:33,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5771ac3/2f58ef0694474b3aa0e19c9450d51af2/FLAGaf9dcff8f [2021-08-27 10:55:34,243 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:55:34,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c [2021-08-27 10:55:34,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5771ac3/2f58ef0694474b3aa0e19c9450d51af2/FLAGaf9dcff8f [2021-08-27 10:55:34,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5771ac3/2f58ef0694474b3aa0e19c9450d51af2 [2021-08-27 10:55:34,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:55:34,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:55:34,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:55:34,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:55:34,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:55:34,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:55:34" (1/1) ... [2021-08-27 10:55:34,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3785133b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34, skipping insertion in model container [2021-08-27 10:55:34,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:55:34" (1/1) ... [2021-08-27 10:55:34,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:55:34,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:55:34,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:55:34,445 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:55:34,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:55:34,472 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:55:34,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34 WrapperNode [2021-08-27 10:55:34,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:55:34,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:55:34,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:55:34,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:55:34,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34" (1/1) ... [2021-08-27 10:55:34,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34" (1/1) ... [2021-08-27 10:55:34,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:55:34,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:55:34,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:55:34,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:55:34,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34" (1/1) ... [2021-08-27 10:55:34,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34" (1/1) ... [2021-08-27 10:55:34,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34" (1/1) ... [2021-08-27 10:55:34,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34" (1/1) ... [2021-08-27 10:55:34,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34" (1/1) ... [2021-08-27 10:55:34,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34" (1/1) ... [2021-08-27 10:55:34,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34" (1/1) ... [2021-08-27 10:55:34,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:55:34,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:55:34,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:55:34,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:55:34,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34" (1/1) ... [2021-08-27 10:55:34,574 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:55:34,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:34,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 10:55:34,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 10:55:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 10:55:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:55:34,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:55:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 10:55:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 10:55:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 10:55:34,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:55:34,919 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-27 10:55:34,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:55:34 BoogieIcfgContainer [2021-08-27 10:55:34,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:55:34,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:55:34,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:55:34,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:55:34,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:55:34" (1/3) ... [2021-08-27 10:55:34,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7556faf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:55:34, skipping insertion in model container [2021-08-27 10:55:34,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:34" (2/3) ... [2021-08-27 10:55:34,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7556faf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:55:34, skipping insertion in model container [2021-08-27 10:55:34,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:55:34" (3/3) ... [2021-08-27 10:55:34,935 INFO L111 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c [2021-08-27 10:55:34,940 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:55:34,940 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-27 10:55:34,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:55:34,990 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 10:55:34,991 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-27 10:55:35,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 10:55:35,007 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:35,007 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 10:55:35,008 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:35,013 INFO L82 PathProgramCache]: Analyzing trace with hash 889574220, now seen corresponding path program 1 times [2021-08-27 10:55:35,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:35,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320672002] [2021-08-27 10:55:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:35,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:35,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:35,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320672002] [2021-08-27 10:55:35,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320672002] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:35,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:55:35,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 10:55:35,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585172392] [2021-08-27 10:55:35,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:55:35,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:35,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:55:35,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:55:35,220 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:35,303 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2021-08-27 10:55:35,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:55:35,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-27 10:55:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:35,312 INFO L225 Difference]: With dead ends: 60 [2021-08-27 10:55:35,312 INFO L226 Difference]: Without dead ends: 35 [2021-08-27 10:55:35,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:55:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-08-27 10:55:35,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2021-08-27 10:55:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-08-27 10:55:35,347 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 6 [2021-08-27 10:55:35,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:35,348 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-08-27 10:55:35,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-08-27 10:55:35,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 10:55:35,349 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:35,349 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:55:35,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:55:35,350 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:35,354 INFO L82 PathProgramCache]: Analyzing trace with hash 180741427, now seen corresponding path program 1 times [2021-08-27 10:55:35,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:35,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121638186] [2021-08-27 10:55:35,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:35,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:35,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:35,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121638186] [2021-08-27 10:55:35,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121638186] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:35,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:55:35,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 10:55:35,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71822188] [2021-08-27 10:55:35,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:55:35,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:35,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:55:35,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:35,432 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:35,456 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-08-27 10:55:35,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:55:35,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-27 10:55:35,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:35,459 INFO L225 Difference]: With dead ends: 35 [2021-08-27 10:55:35,459 INFO L226 Difference]: Without dead ends: 24 [2021-08-27 10:55:35,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:35,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-27 10:55:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-08-27 10:55:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-08-27 10:55:35,467 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 8 [2021-08-27 10:55:35,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:35,467 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-08-27 10:55:35,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,468 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-08-27 10:55:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 10:55:35,469 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:35,469 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-08-27 10:55:35,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:55:35,470 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:35,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:35,471 INFO L82 PathProgramCache]: Analyzing trace with hash -869586168, now seen corresponding path program 1 times [2021-08-27 10:55:35,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:35,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458653525] [2021-08-27 10:55:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:35,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:35,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:35,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458653525] [2021-08-27 10:55:35,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458653525] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:35,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725869693] [2021-08-27 10:55:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:35,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:35,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:35,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:35,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 10:55:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:35,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:55:35,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:35,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725869693] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:35,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:35,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-27 10:55:35,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092136015] [2021-08-27 10:55:35,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 10:55:35,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:35,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 10:55:35,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:55:35,808 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:35,928 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-08-27 10:55:35,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 10:55:35,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-27 10:55:35,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:35,930 INFO L225 Difference]: With dead ends: 41 [2021-08-27 10:55:35,931 INFO L226 Difference]: Without dead ends: 40 [2021-08-27 10:55:35,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 99.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:55:35,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-27 10:55:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2021-08-27 10:55:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-08-27 10:55:35,937 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2021-08-27 10:55:35,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:35,937 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-08-27 10:55:35,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,938 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-08-27 10:55:35,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 10:55:35,938 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:35,938 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-08-27 10:55:35,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:36,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:36,161 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:36,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:36,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1187367381, now seen corresponding path program 1 times [2021-08-27 10:55:36,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:36,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16264762] [2021-08-27 10:55:36,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:36,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:36,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:36,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16264762] [2021-08-27 10:55:36,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16264762] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:36,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67121525] [2021-08-27 10:55:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:36,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:36,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:36,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:36,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 10:55:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:36,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:55:36,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:36,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67121525] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:36,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 10:55:36,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-08-27 10:55:36,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21224351] [2021-08-27 10:55:36,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 10:55:36,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:36,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 10:55:36,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:55:36,408 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:36,469 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-08-27 10:55:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:55:36,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-27 10:55:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:36,474 INFO L225 Difference]: With dead ends: 27 [2021-08-27 10:55:36,474 INFO L226 Difference]: Without dead ends: 26 [2021-08-27 10:55:36,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 81.9ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:55:36,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-08-27 10:55:36,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-08-27 10:55:36,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:36,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-08-27 10:55:36,489 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 11 [2021-08-27 10:55:36,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:36,490 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-08-27 10:55:36,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:36,490 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-08-27 10:55:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 10:55:36,491 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:36,491 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:55:36,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:36,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-27 10:55:36,692 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:36,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:36,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1844723183, now seen corresponding path program 1 times [2021-08-27 10:55:36,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:36,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654520867] [2021-08-27 10:55:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:36,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 10:55:36,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:36,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654520867] [2021-08-27 10:55:36,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654520867] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:36,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:55:36,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:55:36,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508915063] [2021-08-27 10:55:36,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:55:36,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:55:36,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:36,774 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:36,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:36,825 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-08-27 10:55:36,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:55:36,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-27 10:55:36,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:36,826 INFO L225 Difference]: With dead ends: 36 [2021-08-27 10:55:36,826 INFO L226 Difference]: Without dead ends: 34 [2021-08-27 10:55:36,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:36,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-27 10:55:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-08-27 10:55:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.28) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:36,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-08-27 10:55:36,836 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 12 [2021-08-27 10:55:36,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:36,837 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-08-27 10:55:36,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-08-27 10:55:36,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 10:55:36,841 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:36,842 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:55:36,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 10:55:36,843 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:36,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:36,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1042512047, now seen corresponding path program 1 times [2021-08-27 10:55:36,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:36,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607942217] [2021-08-27 10:55:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:36,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 10:55:36,865 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 10:55:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 10:55:36,893 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 10:55:36,893 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 10:55:36,894 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:36,895 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:36,896 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:36,896 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:36,896 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:36,896 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:36,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 10:55:36,901 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:55:36,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:55:36 BoogieIcfgContainer [2021-08-27 10:55:36,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:55:36,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:55:36,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:55:36,917 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:55:36,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:55:34" (3/4) ... [2021-08-27 10:55:36,919 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 10:55:36,954 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:55:36,955 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:55:36,956 INFO L168 Benchmark]: Toolchain (without parser) took 2685.35 ms. Allocated memory was 52.4 MB in the beginning and 79.7 MB in the end (delta: 27.3 MB). Free memory was 29.0 MB in the beginning and 48.3 MB in the end (delta: -19.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:36,956 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:55:36,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.89 ms. Allocated memory is still 52.4 MB. Free memory was 28.8 MB in the beginning and 33.3 MB in the end (delta: -4.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:36,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.92 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 33.3 MB in the beginning and 48.4 MB in the end (delta: -15.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:36,957 INFO L168 Benchmark]: Boogie Preprocessor took 17.78 ms. Allocated memory is still 65.0 MB. Free memory was 48.4 MB in the beginning and 47.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:55:36,957 INFO L168 Benchmark]: RCFGBuilder took 359.96 ms. Allocated memory is still 65.0 MB. Free memory was 47.2 MB in the beginning and 34.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:36,958 INFO L168 Benchmark]: TraceAbstraction took 1987.43 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 33.8 MB in the beginning and 50.4 MB in the end (delta: -16.6 MB). Peak memory consumption was 158.5 kB. Max. memory is 16.1 GB. [2021-08-27 10:55:36,958 INFO L168 Benchmark]: Witness Printer took 37.70 ms. Allocated memory is still 79.7 MB. Free memory was 50.4 MB in the beginning and 48.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:36,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 200.89 ms. Allocated memory is still 52.4 MB. Free memory was 28.8 MB in the beginning and 33.3 MB in the end (delta: -4.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.92 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 33.3 MB in the beginning and 48.4 MB in the end (delta: -15.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.78 ms. Allocated memory is still 65.0 MB. Free memory was 48.4 MB in the beginning and 47.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 359.96 ms. Allocated memory is still 65.0 MB. Free memory was 47.2 MB in the beginning and 34.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1987.43 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 33.8 MB in the beginning and 50.4 MB in the end (delta: -16.6 MB). Peak memory consumption was 158.5 kB. Max. memory is 16.1 GB. * Witness Printer took 37.70 ms. Allocated memory is still 79.7 MB. Free memory was 50.4 MB in the beginning and 48.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int a_length = __VERIFIER_nondet_int(); [L13] COND FALSE !(a_length < 1) [L16] int a[a_length]; [L17] int j = 0; [L17] COND TRUE j < a_length [L18] a[j] = __VERIFIER_nondet_int() [L17] j++ [L17] COND FALSE !(j < a_length) [L20] int offset = 1; [L21] int i = 0; [L22] COND TRUE i < a_length [L23] EXPR a[i] [L23] COND FALSE !(a[i] < 0) [L26] EXPR i + offset [L26] EXPR a[i] [L26] i + offset + a[i] - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1916.5ms, OverallIterations: 6, TraceHistogramMax: 2, EmptinessCheckTime: 10.4ms, AutomataDifference: 385.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 85 SDtfs, 68 SDslu, 156 SDs, 0 SdLazy, 112 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 145.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 234.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 53.5ms AutomataMinimizationTime, 5 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.0ms SsaConstructionTime, 120.3ms SatisfiabilityAnalysisTime, 580.8ms InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 151 SizeOfPredicates, 4 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 5/15 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! [2021-08-27 10:55:36,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...