./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.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/LeeJonesBen-Amram-POPL2001-Ex1.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 d3ded6f4470c26b608997f650ebe66ef1cf6f845 ............................................................................................................................................................................................................................................................................................................................................... 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 10:55:45,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:55:45,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:55:45,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:55:45,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:55:45,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:55:45,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:55:45,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:55:45,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:55:45,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:55:45,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:55:45,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:55:45,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:55:45,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:55:45,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:55:45,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:55:45,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:55:45,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:55:45,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:55:45,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:55:45,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:55:45,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:55:45,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:55:45,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:55:45,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:55:45,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:55:45,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:55:45,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:55:45,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:55:45,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:55:45,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:55:45,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:55:45,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:55:45,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:55:45,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:55:45,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:55:45,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:55:45,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:55:45,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:55:45,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:55:45,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:55:45,742 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:55:45,777 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:55:45,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:55:45,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:55:45,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:55:45,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:55:45,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:55:45,780 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:55:45,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:55:45,781 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:55:45,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:55:45,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:55:45,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:55:45,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:55:45,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:55:45,782 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:55:45,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:55:45,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:55:45,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:55:45,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:55:45,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:55:45,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:55:45,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:55:45,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:55:45,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:55:45,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:55:45,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:55:45,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:55:45,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:55:45,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:55:45,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3ded6f4470c26b608997f650ebe66ef1cf6f845 [2021-08-27 10:55:46,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:55:46,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:55:46,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:55:46,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:55:46,087 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:55:46,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c [2021-08-27 10:55:46,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff714cff8/3b86ffc04a9d47f092ae0f0eb2d97632/FLAG8ccac5035 [2021-08-27 10:55:46,590 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:55:46,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c [2021-08-27 10:55:46,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff714cff8/3b86ffc04a9d47f092ae0f0eb2d97632/FLAG8ccac5035 [2021-08-27 10:55:46,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff714cff8/3b86ffc04a9d47f092ae0f0eb2d97632 [2021-08-27 10:55:46,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:55:46,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:55:46,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:55:46,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:55:46,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:55:46,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:55:46" (1/1) ... [2021-08-27 10:55:46,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5b7f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46, skipping insertion in model container [2021-08-27 10:55:46,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:55:46" (1/1) ... [2021-08-27 10:55:46,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:55:46,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:55:46,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:55:46,726 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:55:46,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:55:46,747 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:55:46,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46 WrapperNode [2021-08-27 10:55:46,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:55:46,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:55:46,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:55:46,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:55:46,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46" (1/1) ... [2021-08-27 10:55:46,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46" (1/1) ... [2021-08-27 10:55:46,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:55:46,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:55:46,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:55:46,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:55:46,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46" (1/1) ... [2021-08-27 10:55:46,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46" (1/1) ... [2021-08-27 10:55:46,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46" (1/1) ... [2021-08-27 10:55:46,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46" (1/1) ... [2021-08-27 10:55:46,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46" (1/1) ... [2021-08-27 10:55:46,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46" (1/1) ... [2021-08-27 10:55:46,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46" (1/1) ... [2021-08-27 10:55:46,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:55:46,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:55:46,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:55:46,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:55:46,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46" (1/1) ... [2021-08-27 10:55:46,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:55:46,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:46,848 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 10:55:46,858 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 10:55:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:55:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:55:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure r1 [2021-08-27 10:55:46,886 INFO L138 BoogieDeclarations]: Found implementation of procedure r1 [2021-08-27 10:55:47,104 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:55:47,104 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-27 10:55:47,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:55:47 BoogieIcfgContainer [2021-08-27 10:55:47,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:55:47,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:55:47,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:55:47,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:55:47,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:55:46" (1/3) ... [2021-08-27 10:55:47,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a40de2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:55:47, skipping insertion in model container [2021-08-27 10:55:47,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:46" (2/3) ... [2021-08-27 10:55:47,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a40de2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:55:47, skipping insertion in model container [2021-08-27 10:55:47,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:55:47" (3/3) ... [2021-08-27 10:55:47,122 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex1.c [2021-08-27 10:55:47,126 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:55:47,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-27 10:55:47,185 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:55:47,191 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 10:55:47,192 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-27 10:55:47,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 23 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 10:55:47,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 10:55:47,208 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:47,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 10:55:47,209 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2021-08-27 10:55:47,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:47,214 INFO L82 PathProgramCache]: Analyzing trace with hash 920915409, now seen corresponding path program 1 times [2021-08-27 10:55:47,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:47,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914284864] [2021-08-27 10:55:47,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:47,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:47,442 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 10:55:47,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:47,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914284864] [2021-08-27 10:55:47,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914284864] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:47,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:55:47,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 10:55:47,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535832864] [2021-08-27 10:55:47,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 10:55:47,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:47,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 10:55:47,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:55:47,466 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 23 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:47,648 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-08-27 10:55:47,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:55:47,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 10:55:47,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:47,657 INFO L225 Difference]: With dead ends: 31 [2021-08-27 10:55:47,657 INFO L226 Difference]: Without dead ends: 17 [2021-08-27 10:55:47,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 97.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:55:47,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-27 10:55:47,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-27 10:55:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.5) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-08-27 10:55:47,690 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2021-08-27 10:55:47,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:47,691 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-08-27 10:55:47,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:47,692 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-08-27 10:55:47,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 10:55:47,692 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:47,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:55:47,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:55:47,693 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2021-08-27 10:55:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:47,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1516393339, now seen corresponding path program 1 times [2021-08-27 10:55:47,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:47,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161539556] [2021-08-27 10:55:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:47,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:47,778 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 10:55:47,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:47,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161539556] [2021-08-27 10:55:47,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161539556] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:47,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:55:47,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 10:55:47,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435561311] [2021-08-27 10:55:47,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 10:55:47,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:47,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 10:55:47,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:55:47,784 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:47,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:47,877 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-08-27 10:55:47,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:55:47,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-27 10:55:47,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:47,882 INFO L225 Difference]: With dead ends: 31 [2021-08-27 10:55:47,882 INFO L226 Difference]: Without dead ends: 29 [2021-08-27 10:55:47,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:55:47,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-27 10:55:47,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2021-08-27 10:55:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 20 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:47,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-08-27 10:55:47,888 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2021-08-27 10:55:47,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:47,888 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-08-27 10:55:47,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-08-27 10:55:47,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 10:55:47,889 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:47,889 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:55:47,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:55:47,889 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2021-08-27 10:55:47,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:47,890 INFO L82 PathProgramCache]: Analyzing trace with hash 236446803, now seen corresponding path program 1 times [2021-08-27 10:55:47,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:47,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971162821] [2021-08-27 10:55:47,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:47,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 10:55:47,896 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 10:55:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 10:55:47,911 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 10:55:47,912 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 10:55:47,912 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:47,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:47,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:47,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:47,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:47,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:47,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 10:55:47,920 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:55:47,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:55:47 BoogieIcfgContainer [2021-08-27 10:55:47,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:55:47,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:55:47,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:55:47,933 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:55:47,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:55:47" (3/4) ... [2021-08-27 10:55:47,935 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 10:55:47,958 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:55:47,958 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:55:47,959 INFO L168 Benchmark]: Toolchain (without parser) took 1347.75 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 48.5 MB in the beginning and 66.4 MB in the end (delta: -17.9 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:47,960 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 67.1 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:55:47,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 133.77 ms. Allocated memory is still 67.1 MB. Free memory was 48.4 MB in the beginning and 40.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:47,960 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.55 ms. Allocated memory is still 67.1 MB. Free memory was 40.0 MB in the beginning and 38.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:47,961 INFO L168 Benchmark]: Boogie Preprocessor took 43.74 ms. Allocated memory is still 67.1 MB. Free memory was 38.6 MB in the beginning and 51.6 MB in the end (delta: -13.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:47,961 INFO L168 Benchmark]: RCFGBuilder took 299.56 ms. Allocated memory is still 67.1 MB. Free memory was 51.6 MB in the beginning and 40.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:47,962 INFO L168 Benchmark]: TraceAbstraction took 814.87 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 40.1 MB in the beginning and 67.8 MB in the end (delta: -27.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:55:47,962 INFO L168 Benchmark]: Witness Printer took 24.74 ms. Allocated memory is still 90.2 MB. Free memory was 67.8 MB in the beginning and 66.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:47,964 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 67.1 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 133.77 ms. Allocated memory is still 67.1 MB. Free memory was 48.4 MB in the beginning and 40.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.55 ms. Allocated memory is still 67.1 MB. Free memory was 40.0 MB in the beginning and 38.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.74 ms. Allocated memory is still 67.1 MB. Free memory was 38.6 MB in the beginning and 51.6 MB in the end (delta: -13.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 299.56 ms. Allocated memory is still 67.1 MB. Free memory was 51.6 MB in the beginning and 40.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 814.87 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 40.1 MB in the beginning and 67.8 MB in the end (delta: -27.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 24.74 ms. Allocated memory is still 90.2 MB. Free memory was 67.8 MB in the beginning and 66.4 MB in the end (delta: 1.4 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: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L26] int ls = __VERIFIER_nondet_int(); [L27] COND TRUE ls >= 0 [L22] CALL r1(ls,0) VAL [\old(a)=0, \old(ls)=2147483647] [L14] COND FALSE !(ls == 0) VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] [L17] ls-1 VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] [L17] ls+1 VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] - 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: 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: 17]: 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 2 procedures, 27 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 734.4ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 7.7ms, AutomataDifference: 309.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 19 SDtfs, 61 SDslu, 50 SDs, 0 SdLazy, 96 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 120.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 148.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.2ms SsaConstructionTime, 34.8ms SatisfiabilityAnalysisTime, 201.5ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 31 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-27 10:55:47,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...