./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 30f4e4ab 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 0.1.24-30f4e4a [2019-11-28 02:52:20,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:52:20,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:52:20,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:52:20,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:52:20,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:52:20,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:52:20,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:52:20,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:52:20,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:52:20,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:52:20,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:52:20,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:52:20,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:52:20,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:52:20,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:52:20,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:52:20,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:52:20,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:52:20,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:52:20,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:52:20,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:52:20,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:52:20,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:52:20,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:52:20,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:52:20,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:52:20,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:52:20,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:52:20,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:52:20,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:52:20,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:52:20,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:52:20,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:52:20,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:52:20,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:52:20,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:52:20,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:52:20,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:52:20,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:52:20,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:52:20,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 02:52:20,569 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:52:20,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:52:20,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:52:20,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:52:20,571 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:52:20,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:52:20,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:52:20,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:52:20,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:52:20,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:52:20,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:52:20,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:52:20,574 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:52:20,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:52:20,575 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:52:20,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:52:20,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:52:20,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:52:20,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:52:20,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:52:20,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:52:20,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:52:20,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:52:20,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:52:20,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:52:20,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:52:20,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:52:20,578 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 02:52:20,932 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:52:20,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:52:20,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:52:20,954 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:52:20,954 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:52:20,955 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2019-11-28 02:52:21,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/071ce03e6/984ccf3aa98241578135c24fc81568d5/FLAGe64a866a2 [2019-11-28 02:52:21,421 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:52:21,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2019-11-28 02:52:21,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/071ce03e6/984ccf3aa98241578135c24fc81568d5/FLAGe64a866a2 [2019-11-28 02:52:21,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/071ce03e6/984ccf3aa98241578135c24fc81568d5 [2019-11-28 02:52:21,799 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:52:21,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:52:21,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:52:21,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:52:21,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:52:21,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:21" (1/1) ... [2019-11-28 02:52:21,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1197c1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:21, skipping insertion in model container [2019-11-28 02:52:21,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:21" (1/1) ... [2019-11-28 02:52:21,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:52:21,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:52:22,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:52:22,059 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:52:22,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:52:22,091 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:52:22,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:22 WrapperNode [2019-11-28 02:52:22,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:52:22,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:52:22,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:52:22,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:52:22,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:22" (1/1) ... [2019-11-28 02:52:22,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:22" (1/1) ... [2019-11-28 02:52:22,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:52:22,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:52:22,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:52:22,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:52:22,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:22" (1/1) ... [2019-11-28 02:52:22,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:22" (1/1) ... [2019-11-28 02:52:22,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:22" (1/1) ... [2019-11-28 02:52:22,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:22" (1/1) ... [2019-11-28 02:52:22,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:22" (1/1) ... [2019-11-28 02:52:22,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:22" (1/1) ... [2019-11-28 02:52:22,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:22" (1/1) ... [2019-11-28 02:52:22,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:52:22,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:52:22,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:52:22,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:52:22,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:22" (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 02:52:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:52:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 02:52:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:52:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:52:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:52:22,656 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:52:22,657 INFO L297 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-28 02:52:22,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:22 BoogieIcfgContainer [2019-11-28 02:52:22,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:52:22,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:52:22,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:52:22,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:52:22,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:52:21" (1/3) ... [2019-11-28 02:52:22,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9c544d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:22, skipping insertion in model container [2019-11-28 02:52:22,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:22" (2/3) ... [2019-11-28 02:52:22,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9c544d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:22, skipping insertion in model container [2019-11-28 02:52:22,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:22" (3/3) ... [2019-11-28 02:52:22,666 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrncmp.c [2019-11-28 02:52:22,675 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:52:22,681 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-28 02:52:22,692 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-28 02:52:22,713 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:52:22,713 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:52:22,714 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:52:22,714 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:52:22,714 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:52:22,714 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:52:22,714 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:52:22,714 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:52:22,729 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-11-28 02:52:22,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 02:52:22,734 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:22,735 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 02:52:22,735 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 02:52:22,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:22,739 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2019-11-28 02:52:22,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:22,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720393443] [2019-11-28 02:52:22,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:22,866 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 02:52:22,867 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720393443] [2019-11-28 02:52:22,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:22,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:52:22,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955331152] [2019-11-28 02:52:22,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:52:22,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:22,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:52:22,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:52:22,885 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2019-11-28 02:52:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:23,005 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2019-11-28 02:52:23,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:52:23,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 02:52:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:23,017 INFO L225 Difference]: With dead ends: 77 [2019-11-28 02:52:23,017 INFO L226 Difference]: Without dead ends: 52 [2019-11-28 02:52:23,021 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 02:52:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-28 02:52:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2019-11-28 02:52:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-28 02:52:23,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2019-11-28 02:52:23,055 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 4 [2019-11-28 02:52:23,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:23,056 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2019-11-28 02:52:23,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:52:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2019-11-28 02:52:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 02:52:23,056 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:23,057 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 02:52:23,059 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 02:52:23,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:23,060 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-28 02:52:23,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:23,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569085126] [2019-11-28 02:52:23,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:23,097 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 02:52:23,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569085126] [2019-11-28 02:52:23,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:23,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:52:23,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142915778] [2019-11-28 02:52:23,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:52:23,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:23,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:52:23,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:52:23,101 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 3 states. [2019-11-28 02:52:23,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:23,152 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-28 02:52:23,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:52:23,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 02:52:23,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:23,154 INFO L225 Difference]: With dead ends: 38 [2019-11-28 02:52:23,154 INFO L226 Difference]: Without dead ends: 34 [2019-11-28 02:52:23,155 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 02:52:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-28 02:52:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2019-11-28 02:52:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 02:52:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-28 02:52:23,162 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 4 [2019-11-28 02:52:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:23,162 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-28 02:52:23,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:52:23,163 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-28 02:52:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 02:52:23,163 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:23,163 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 02:52:23,164 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 02:52:23,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:23,164 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2019-11-28 02:52:23,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:23,165 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442394659] [2019-11-28 02:52:23,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:23,185 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 02:52:23,185 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442394659] [2019-11-28 02:52:23,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:23,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:52:23,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932591437] [2019-11-28 02:52:23,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:52:23,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:23,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:52:23,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:52:23,187 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-11-28 02:52:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:23,243 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-11-28 02:52:23,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:52:23,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 02:52:23,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:23,245 INFO L225 Difference]: With dead ends: 28 [2019-11-28 02:52:23,245 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 02:52:23,247 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 02:52:23,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 02:52:23,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-28 02:52:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 02:52:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-28 02:52:23,255 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 5 [2019-11-28 02:52:23,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:23,256 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-28 02:52:23,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:52:23,257 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-28 02:52:23,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 02:52:23,258 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:23,259 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 02:52:23,259 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 02:52:23,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:23,260 INFO L82 PathProgramCache]: Analyzing trace with hash -442003725, now seen corresponding path program 1 times [2019-11-28 02:52:23,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:23,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786320940] [2019-11-28 02:52:23,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:23,368 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 02:52:23,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786320940] [2019-11-28 02:52:23,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:23,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:52:23,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250577799] [2019-11-28 02:52:23,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:52:23,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:23,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:52:23,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:52:23,374 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2019-11-28 02:52:23,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:23,411 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-11-28 02:52:23,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:52:23,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-11-28 02:52:23,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:23,413 INFO L225 Difference]: With dead ends: 24 [2019-11-28 02:52:23,413 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 02:52:23,414 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 02:52:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 02:52:23,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 02:52:23,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 02:52:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-28 02:52:23,422 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2019-11-28 02:52:23,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:23,423 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-28 02:52:23,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:52:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-28 02:52:23,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 02:52:23,425 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:23,425 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 02:52:23,426 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 02:52:23,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:23,427 INFO L82 PathProgramCache]: Analyzing trace with hash -817213509, now seen corresponding path program 1 times [2019-11-28 02:52:23,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:23,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603754880] [2019-11-28 02:52:23,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:52:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:52:23,536 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:52:23,537 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:52:23,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:52:23 BoogieIcfgContainer [2019-11-28 02:52:23,577 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:52:23,577 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:52:23,578 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:52:23,578 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:52:23,578 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:22" (3/4) ... [2019-11-28 02:52:23,581 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:52:23,632 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:52:23,632 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:52:23,634 INFO L168 Benchmark]: Toolchain (without parser) took 1832.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 960.3 MB in the beginning and 1.0 GB in the end (delta: -80.2 MB). Peak memory consumption was 60.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:23,635 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:52:23,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.98 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:23,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:23,637 INFO L168 Benchmark]: Boogie Preprocessor took 45.18 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 02:52:23,638 INFO L168 Benchmark]: RCFGBuilder took 417.46 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:23,638 INFO L168 Benchmark]: TraceAbstraction took 917.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:23,639 INFO L168 Benchmark]: Witness Printer took 54.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:23,643 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 289.98 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 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 102.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.18 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. * RCFGBuilder took 417.46 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 917.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 11.5 GB. * Witness Printer took 54.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. 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: 0.8s, 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, 0.0s 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...