./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/cstrncmp.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 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 ............................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-11-28 20:24:53,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:24:53,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:24:53,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:24:53,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:24:53,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:24:53,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:24:53,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:24:53,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:24:53,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:24:53,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:24:53,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:24:53,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:24:53,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:24:53,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:24:53,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:24:53,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:24:53,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:24:53,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:24:53,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:24:53,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:24:53,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:24:53,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:24:53,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:24:53,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:24:53,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:24:53,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:24:53,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:24:53,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:24:53,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:24:53,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:24:53,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:24:53,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:24:53,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:24:53,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:24:53,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:24:53,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:24:53,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:24:53,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:24:53,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:24:53,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:24:53,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:24:53,837 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:24:53,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:24:53,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:24:53,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:24:53,840 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:24:53,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:24:53,840 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:24:53,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:24:53,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:24:53,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:24:53,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:24:53,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:24:53,842 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:24:53,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:24:53,843 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:24:53,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:24:53,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:24:53,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:24:53,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:24:53,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:24:53,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:24:53,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:24:53,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:24:53,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:24:53,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:24:53,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:24:53,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:24:53,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:24:53,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 [2019-11-28 20:24:54,145 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:24:54,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:24:54,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:24:54,171 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:24:54,171 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:24:54,172 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2019-11-28 20:24:54,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20f2e530/bf3eb1c3bc4c483986183c067e83618e/FLAG86b70b824 [2019-11-28 20:24:54,736 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:24:54,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2019-11-28 20:24:54,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20f2e530/bf3eb1c3bc4c483986183c067e83618e/FLAG86b70b824 [2019-11-28 20:24:55,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20f2e530/bf3eb1c3bc4c483986183c067e83618e [2019-11-28 20:24:55,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:24:55,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:24:55,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:55,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:24:55,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:24:55,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:55" (1/1) ... [2019-11-28 20:24:55,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26503c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55, skipping insertion in model container [2019-11-28 20:24:55,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:55" (1/1) ... [2019-11-28 20:24:55,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:24:55,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:24:55,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:55,366 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:24:55,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:55,406 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:24:55,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55 WrapperNode [2019-11-28 20:24:55,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:55,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:55,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:24:55,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:24:55,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55" (1/1) ... [2019-11-28 20:24:55,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55" (1/1) ... [2019-11-28 20:24:55,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:55,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:24:55,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:24:55,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:24:55,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55" (1/1) ... [2019-11-28 20:24:55,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55" (1/1) ... [2019-11-28 20:24:55,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55" (1/1) ... [2019-11-28 20:24:55,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55" (1/1) ... [2019-11-28 20:24:55,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55" (1/1) ... [2019-11-28 20:24:55,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55" (1/1) ... [2019-11-28 20:24:55,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55" (1/1) ... [2019-11-28 20:24:55,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:24:55,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:24:55,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:24:55,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:24:55,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:24:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:24:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 20:24:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:24:55,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:24:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:24:55,979 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:24:55,979 INFO L287 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-28 20:24:55,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:55 BoogieIcfgContainer [2019-11-28 20:24:55,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:24:55,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:24:55,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:24:55,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:24:55,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:24:55" (1/3) ... [2019-11-28 20:24:55,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fa5338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:55, skipping insertion in model container [2019-11-28 20:24:55,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:55" (2/3) ... [2019-11-28 20:24:55,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fa5338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:55, skipping insertion in model container [2019-11-28 20:24:55,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:55" (3/3) ... [2019-11-28 20:24:55,990 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrncmp.c [2019-11-28 20:24:55,999 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:24:56,011 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-28 20:24:56,024 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-28 20:24:56,049 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:24:56,049 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:24:56,049 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:24:56,049 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:24:56,049 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:24:56,049 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:24:56,050 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:24:56,050 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:24:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-11-28 20:24:56,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:24:56,073 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:56,074 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:24:56,075 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:56,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:56,082 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2019-11-28 20:24:56,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:56,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579058660] [2019-11-28 20:24:56,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:56,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579058660] [2019-11-28 20:24:56,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:56,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:24:56,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182972503] [2019-11-28 20:24:56,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:56,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:56,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:56,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:56,260 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2019-11-28 20:24:56,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:56,403 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2019-11-28 20:24:56,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:56,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 20:24:56,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:56,417 INFO L225 Difference]: With dead ends: 77 [2019-11-28 20:24:56,418 INFO L226 Difference]: Without dead ends: 52 [2019-11-28 20:24:56,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:56,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-28 20:24:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2019-11-28 20:24:56,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-28 20:24:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2019-11-28 20:24:56,468 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 4 [2019-11-28 20:24:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:56,469 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2019-11-28 20:24:56,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2019-11-28 20:24:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:24:56,470 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:56,470 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:24:56,471 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:56,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:56,471 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-28 20:24:56,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:56,472 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010571869] [2019-11-28 20:24:56,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:56,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010571869] [2019-11-28 20:24:56,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:56,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:24:56,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178655912] [2019-11-28 20:24:56,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:56,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:56,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:56,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:56,500 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 3 states. [2019-11-28 20:24:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:56,561 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-28 20:24:56,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:56,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 20:24:56,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:56,563 INFO L225 Difference]: With dead ends: 38 [2019-11-28 20:24:56,563 INFO L226 Difference]: Without dead ends: 34 [2019-11-28 20:24:56,564 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:56,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-28 20:24:56,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2019-11-28 20:24:56,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 20:24:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-28 20:24:56,570 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 4 [2019-11-28 20:24:56,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:56,571 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-28 20:24:56,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-28 20:24:56,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 20:24:56,571 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:56,572 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 20:24:56,572 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:56,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:56,573 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2019-11-28 20:24:56,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:56,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258871179] [2019-11-28 20:24:56,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:56,596 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258871179] [2019-11-28 20:24:56,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:56,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:24:56,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93357113] [2019-11-28 20:24:56,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:56,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:56,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:56,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:56,599 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-11-28 20:24:56,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:56,638 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-11-28 20:24:56,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:56,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 20:24:56,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:56,640 INFO L225 Difference]: With dead ends: 28 [2019-11-28 20:24:56,640 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 20:24:56,641 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:56,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 20:24:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-28 20:24:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 20:24:56,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-28 20:24:56,646 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 5 [2019-11-28 20:24:56,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:56,647 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-28 20:24:56,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-28 20:24:56,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 20:24:56,648 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:56,648 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:56,648 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:56,649 INFO L82 PathProgramCache]: Analyzing trace with hash -442003725, now seen corresponding path program 1 times [2019-11-28 20:24:56,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:56,649 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567724744] [2019-11-28 20:24:56,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:56,753 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567724744] [2019-11-28 20:24:56,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:56,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:24:56,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489582362] [2019-11-28 20:24:56,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:24:56,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:56,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:24:56,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:24:56,755 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2019-11-28 20:24:56,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:56,801 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-11-28 20:24:56,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:24:56,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-11-28 20:24:56,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:56,804 INFO L225 Difference]: With dead ends: 24 [2019-11-28 20:24:56,804 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 20:24:56,805 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 20:24:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 20:24:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 20:24:56,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-28 20:24:56,810 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2019-11-28 20:24:56,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:56,810 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-28 20:24:56,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:24:56,813 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-28 20:24:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 20:24:56,813 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:56,814 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:56,814 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:56,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:56,815 INFO L82 PathProgramCache]: Analyzing trace with hash -817213509, now seen corresponding path program 1 times [2019-11-28 20:24:56,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:56,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962182722] [2019-11-28 20:24:56,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:24:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:24:56,965 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:24:56,965 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:24:56,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:24:56 BoogieIcfgContainer [2019-11-28 20:24:56,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:24:56,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:24:56,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:24:56,999 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:24:57,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:55" (3/4) ... [2019-11-28 20:24:57,002 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:24:57,054 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:24:57,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:24:57,057 INFO L168 Benchmark]: Toolchain (without parser) took 1935.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -96.4 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:57,058 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:24:57,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.15 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:57,060 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:57,060 INFO L168 Benchmark]: Boogie Preprocessor took 26.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:57,061 INFO L168 Benchmark]: RCFGBuilder took 423.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:57,062 INFO L168 Benchmark]: TraceAbstraction took 1017.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:57,062 INFO L168 Benchmark]: Witness Printer took 55.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:24:57,067 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 285.15 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 122.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 423.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1017.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. * Witness Printer took 55.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L28] unsigned char uc1, uc2; [L30] COND FALSE !(n == 0) [L33] n-- - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 10 error locations. Result: UNSAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 93 SDslu, 59 SDs, 0 SdLazy, 63 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 420 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...