./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/Ben-Amram-LMCS2010-Ex2.3.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/Ben-Amram-LMCS2010-Ex2.3.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 914e210bb2ee753bbbdbfa23a6e9397216225fad .................................................................................................................................................................................................................................................................................................................................................................................... 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 10:53:28,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:53:28,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:53:28,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:53:28,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:53:28,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:53:28,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:53:28,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:53:28,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:53:28,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:53:28,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:53:28,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:53:28,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:53:28,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:53:28,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:53:28,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:53:28,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:53:28,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:53:28,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:53:28,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:53:28,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:53:28,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:53:28,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:53:28,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:53:28,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:53:28,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:53:28,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:53:28,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:53:28,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:53:28,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:53:28,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:53:28,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:53:28,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:53:28,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:53:28,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:53:28,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:53:28,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:53:28,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:53:28,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:53:28,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:53:28,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:53:28,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:53:28,479 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:53:28,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:53:28,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:53:28,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:53:28,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:53:28,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:53:28,480 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:53:28,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:53:28,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:53:28,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:53:28,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:53:28,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:53:28,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:53:28,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:53:28,481 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:53:28,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:53:28,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:53:28,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:53:28,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:53:28,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:53:28,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:53:28,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:53:28,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:53:28,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:53:28,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:53:28,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:53:28,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:53:28,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:53:28,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:53:28,483 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 914e210bb2ee753bbbdbfa23a6e9397216225fad [2021-08-27 10:53:28,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:53:28,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:53:28,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:53:28,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:53:28,744 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:53:28,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/Ben-Amram-LMCS2010-Ex2.3.c [2021-08-27 10:53:28,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e73c5960/9a55627d6b3947879df28e3d322444a1/FLAGfb7bc6d45 [2021-08-27 10:53:29,155 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:53:29,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/Ben-Amram-LMCS2010-Ex2.3.c [2021-08-27 10:53:29,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e73c5960/9a55627d6b3947879df28e3d322444a1/FLAGfb7bc6d45 [2021-08-27 10:53:29,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e73c5960/9a55627d6b3947879df28e3d322444a1 [2021-08-27 10:53:29,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:53:29,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:53:29,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:53:29,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:53:29,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:53:29,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:53:29" (1/1) ... [2021-08-27 10:53:29,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f02304a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29, skipping insertion in model container [2021-08-27 10:53:29,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:53:29" (1/1) ... [2021-08-27 10:53:29,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:53:29,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:53:29,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:53:29,727 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:53:29,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:53:29,745 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:53:29,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29 WrapperNode [2021-08-27 10:53:29,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:53:29,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:53:29,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:53:29,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:53:29,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29" (1/1) ... [2021-08-27 10:53:29,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29" (1/1) ... [2021-08-27 10:53:29,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:53:29,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:53:29,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:53:29,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:53:29,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29" (1/1) ... [2021-08-27 10:53:29,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29" (1/1) ... [2021-08-27 10:53:29,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29" (1/1) ... [2021-08-27 10:53:29,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29" (1/1) ... [2021-08-27 10:53:29,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29" (1/1) ... [2021-08-27 10:53:29,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29" (1/1) ... [2021-08-27 10:53:29,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29" (1/1) ... [2021-08-27 10:53:29,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:53:29,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:53:29,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:53:29,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:53:29,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29" (1/1) ... [2021-08-27 10:53:29,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:53:29,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:29,850 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 10:53:29,872 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 10:53:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:53:29,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:53:30,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:53:30,068 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 10:53:30,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:53:30 BoogieIcfgContainer [2021-08-27 10:53:30,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:53:30,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:53:30,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:53:30,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:53:30,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:53:29" (1/3) ... [2021-08-27 10:53:30,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c804712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:53:30, skipping insertion in model container [2021-08-27 10:53:30,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:29" (2/3) ... [2021-08-27 10:53:30,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c804712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:53:30, skipping insertion in model container [2021-08-27 10:53:30,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:53:30" (3/3) ... [2021-08-27 10:53:30,075 INFO L111 eAbstractionObserver]: Analyzing ICFG Ben-Amram-LMCS2010-Ex2.3.c [2021-08-27 10:53:30,079 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:53:30,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-27 10:53:30,115 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:53:30,121 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 10:53:30,121 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-27 10:53:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.75) internal successors, (21), 18 states have internal predecessors, (21), 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 10:53:30,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-27 10:53:30,140 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:30,140 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-27 10:53:30,140 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:53:30,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:30,144 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-08-27 10:53:30,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:30,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981733836] [2021-08-27 10:53:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:30,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:30,250 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 10:53:30,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:30,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981733836] [2021-08-27 10:53:30,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981733836] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:30,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:30,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:53:30,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732276948] [2021-08-27 10:53:30,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:53:30,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:30,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:53:30,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:30,269 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.75) internal successors, (21), 18 states have internal predecessors, (21), 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 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 10:53:30,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:30,351 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-08-27 10:53:30,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:53:30,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-08-27 10:53:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:30,358 INFO L225 Difference]: With dead ends: 40 [2021-08-27 10:53:30,358 INFO L226 Difference]: Without dead ends: 27 [2021-08-27 10:53:30,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:30,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-27 10:53:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-08-27 10:53:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 20 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 10:53:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-08-27 10:53:30,378 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 4 [2021-08-27 10:53:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:30,379 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-08-27 10:53:30,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 10:53:30,379 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-08-27 10:53:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-27 10:53:30,380 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:30,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-27 10:53:30,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:53:30,380 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:53:30,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:30,383 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-08-27 10:53:30,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:30,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421467991] [2021-08-27 10:53:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:30,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:30,421 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 10:53:30,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:30,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421467991] [2021-08-27 10:53:30,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421467991] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:30,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:30,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:53:30,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278166666] [2021-08-27 10:53:30,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:53:30,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:30,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:53:30,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:30,427 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 10:53:30,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:30,460 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-08-27 10:53:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:53:30,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-08-27 10:53:30,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:30,462 INFO L225 Difference]: With dead ends: 21 [2021-08-27 10:53:30,462 INFO L226 Difference]: Without dead ends: 19 [2021-08-27 10:53:30,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-27 10:53:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-08-27 10:53:30,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 18 states have internal predecessors, (23), 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 10:53:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-08-27 10:53:30,470 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 4 [2021-08-27 10:53:30,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:30,470 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-08-27 10:53:30,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 10:53:30,471 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-08-27 10:53:30,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:53:30,471 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:30,471 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:53:30,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:53:30,472 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:53:30,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:30,475 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-08-27 10:53:30,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:30,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986414948] [2021-08-27 10:53:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:30,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:30,496 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 10:53:30,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:30,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986414948] [2021-08-27 10:53:30,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986414948] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:30,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:30,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:53:30,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106261279] [2021-08-27 10:53:30,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:53:30,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:30,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:53:30,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:30,502 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 10:53:30,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:30,518 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-08-27 10:53:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:53:30,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-08-27 10:53:30,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:30,521 INFO L225 Difference]: With dead ends: 19 [2021-08-27 10:53:30,521 INFO L226 Difference]: Without dead ends: 18 [2021-08-27 10:53:30,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:30,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-27 10:53:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-08-27 10:53:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.4) internal successors, (21), 17 states have internal predecessors, (21), 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 10:53:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-08-27 10:53:30,530 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 5 [2021-08-27 10:53:30,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:30,531 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-08-27 10:53:30,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 10:53:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-08-27 10:53:30,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:53:30,531 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:30,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:53:30,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 10:53:30,532 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 10:53:30,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:30,533 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-08-27 10:53:30,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:30,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516631293] [2021-08-27 10:53:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:30,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 10:53:30,546 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 10:53:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 10:53:30,564 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 10:53:30,565 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 10:53:30,566 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:30,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:30,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:30,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:30,570 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:30,570 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:30,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 10:53:30,575 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:53:30,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:53:30 BoogieIcfgContainer [2021-08-27 10:53:30,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:53:30,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:53:30,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:53:30,591 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:53:30,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:53:30" (3/4) ... [2021-08-27 10:53:30,594 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 10:53:30,618 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:53:30,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:53:30,622 INFO L168 Benchmark]: Toolchain (without parser) took 1027.03 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 51.1 MB in the beginning and 58.0 MB in the end (delta: -6.9 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:30,622 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 69.2 MB. Free memory is still 50.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:53:30,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.66 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 42.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:30,625 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.56 ms. Allocated memory is still 69.2 MB. Free memory was 42.3 MB in the beginning and 40.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:30,626 INFO L168 Benchmark]: Boogie Preprocessor took 48.94 ms. Allocated memory is still 69.2 MB. Free memory was 40.8 MB in the beginning and 52.6 MB in the end (delta: -11.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:30,627 INFO L168 Benchmark]: RCFGBuilder took 252.41 ms. Allocated memory is still 69.2 MB. Free memory was 52.3 MB in the beginning and 42.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:30,628 INFO L168 Benchmark]: TraceAbstraction took 517.50 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 41.5 MB in the beginning and 60.1 MB in the end (delta: -18.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:53:30,632 INFO L168 Benchmark]: Witness Printer took 28.60 ms. Allocated memory is still 83.9 MB. Free memory was 59.5 MB in the beginning and 58.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:53:30,636 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 69.2 MB. Free memory is still 50.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 152.66 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 42.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 20.56 ms. Allocated memory is still 69.2 MB. Free memory was 42.3 MB in the beginning and 40.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.94 ms. Allocated memory is still 69.2 MB. Free memory was 40.8 MB in the beginning and 52.6 MB in the end (delta: -11.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 252.41 ms. Allocated memory is still 69.2 MB. Free memory was 52.3 MB in the beginning and 42.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 517.50 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 41.5 MB in the beginning and 60.1 MB in the end (delta: -18.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 28.60 ms. Allocated memory is still 83.9 MB. Free memory was 59.5 MB in the beginning and 58.0 MB in the end (delta: 1.6 MB). There was no memory consumed. 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: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y, z; [L16] x = __VERIFIER_nondet_int() [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L20] COND TRUE x > 0 && y > 0 && z > 0 [L21] COND TRUE y > x [L22] y = z [L23] x = __VERIFIER_nondet_int() [L24] x - 1 - UnprovableResult [Line: 24]: 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: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: 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, 19 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 459.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 11.3ms, AutomataDifference: 163.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 29 SDslu, 14 SDs, 0 SdLazy, 29 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=1, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.7ms SsaConstructionTime, 37.4ms SatisfiabilityAnalysisTime, 69.6ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-27 10:53:30,670 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...