./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer --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-cad4683 [2019-11-16 00:43:10,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:43:10,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:43:10,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:43:10,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:43:10,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:43:10,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:43:10,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:43:10,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:43:10,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:43:10,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:43:10,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:43:10,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:43:10,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:43:10,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:43:10,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:43:10,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:43:10,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:43:10,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:43:10,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:43:10,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:43:10,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:43:10,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:43:10,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:43:10,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:43:10,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:43:10,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:43:10,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:43:10,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:43:10,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:43:10,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:43:10,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:43:10,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:43:10,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:43:10,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:43:10,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:43:10,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:43:10,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:43:10,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:43:10,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:43:10,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:43:10,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-16 00:43:10,746 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:43:10,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:43:10,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:43:10,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:43:10,748 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:43:10,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:43:10,748 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-16 00:43:10,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:43:10,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:43:10,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:43:10,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:43:10,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:43:10,750 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-16 00:43:10,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:43:10,750 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:43:10,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:43:10,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:43:10,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:43:10,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:43:10,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:43:10,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:43:10,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:43:10,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:43:10,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:43:10,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:43:10,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:43:10,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:43:10,753 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer 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 [2019-11-16 00:43:10,778 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:43:10,788 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:43:10,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:43:10,793 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:43:10,793 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:43:10,794 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2019-11-16 00:43:10,844 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer/data/a3f689fe5/6b1f1e9e80c0480e9727638ce93ea123/FLAGb398741dc [2019-11-16 00:43:11,231 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:43:11,233 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2019-11-16 00:43:11,239 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer/data/a3f689fe5/6b1f1e9e80c0480e9727638ce93ea123/FLAGb398741dc [2019-11-16 00:43:11,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer/data/a3f689fe5/6b1f1e9e80c0480e9727638ce93ea123 [2019-11-16 00:43:11,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:43:11,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:43:11,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:43:11,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:43:11,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:43:11,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:43:11" (1/1) ... [2019-11-16 00:43:11,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388146e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11, skipping insertion in model container [2019-11-16 00:43:11,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:43:11" (1/1) ... [2019-11-16 00:43:11,588 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:43:11,608 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:43:11,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:43:11,885 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:43:11,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:43:11,925 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:43:11,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11 WrapperNode [2019-11-16 00:43:11,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:43:11,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:43:11,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:43:11,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:43:11,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11" (1/1) ... [2019-11-16 00:43:11,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11" (1/1) ... [2019-11-16 00:43:11,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:43:11,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:43:11,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:43:11,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:43:11,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11" (1/1) ... [2019-11-16 00:43:11,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11" (1/1) ... [2019-11-16 00:43:11,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11" (1/1) ... [2019-11-16 00:43:11,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11" (1/1) ... [2019-11-16 00:43:11,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11" (1/1) ... [2019-11-16 00:43:12,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11" (1/1) ... [2019-11-16 00:43:12,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11" (1/1) ... [2019-11-16 00:43:12,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:43:12,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:43:12,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:43:12,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:43:12,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer/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 [2019-11-16 00:43:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-16 00:43:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-16 00:43:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:43:12,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:43:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-16 00:43:12,384 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:43:12,385 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-16 00:43:12,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:43:12 BoogieIcfgContainer [2019-11-16 00:43:12,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:43:12,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:43:12,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:43:12,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:43:12,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:43:11" (1/3) ... [2019-11-16 00:43:12,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6878f8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:43:12, skipping insertion in model container [2019-11-16 00:43:12,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:11" (2/3) ... [2019-11-16 00:43:12,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6878f8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:43:12, skipping insertion in model container [2019-11-16 00:43:12,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:43:12" (3/3) ... [2019-11-16 00:43:12,393 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrncmp.c [2019-11-16 00:43:12,404 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:43:12,409 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-16 00:43:12,418 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-16 00:43:12,436 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:43:12,436 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:43:12,436 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:43:12,436 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:43:12,436 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:43:12,437 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:43:12,437 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:43:12,437 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:43:12,450 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-11-16 00:43:12,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-16 00:43:12,455 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:43:12,456 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-16 00:43:12,458 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:43:12,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:43:12,463 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2019-11-16 00:43:12,468 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:43:12,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979073216] [2019-11-16 00:43:12,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:43:12,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:43:12,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:43:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:43:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:43:12,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979073216] [2019-11-16 00:43:12,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:43:12,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-16 00:43:12,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890981556] [2019-11-16 00:43:12,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:43:12,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:43:12,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:43:12,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:43:12,599 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2019-11-16 00:43:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:43:12,725 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2019-11-16 00:43:12,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:43:12,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-16 00:43:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:43:12,738 INFO L225 Difference]: With dead ends: 77 [2019-11-16 00:43:12,739 INFO L226 Difference]: Without dead ends: 52 [2019-11-16 00:43:12,742 INFO L600 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 [2019-11-16 00:43:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-16 00:43:12,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2019-11-16 00:43:12,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-16 00:43:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2019-11-16 00:43:12,771 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 4 [2019-11-16 00:43:12,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:43:12,771 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2019-11-16 00:43:12,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:43:12,771 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2019-11-16 00:43:12,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-16 00:43:12,772 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:43:12,772 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-16 00:43:12,773 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:43:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:43:12,773 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-16 00:43:12,773 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:43:12,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157668071] [2019-11-16 00:43:12,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:43:12,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:43:12,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:43:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:43:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:43:12,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157668071] [2019-11-16 00:43:12,793 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:43:12,793 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-16 00:43:12,793 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016717085] [2019-11-16 00:43:12,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:43:12,795 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:43:12,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:43:12,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:43:12,795 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 3 states. [2019-11-16 00:43:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:43:12,851 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-16 00:43:12,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:43:12,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-16 00:43:12,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:43:12,852 INFO L225 Difference]: With dead ends: 38 [2019-11-16 00:43:12,852 INFO L226 Difference]: Without dead ends: 34 [2019-11-16 00:43:12,853 INFO L600 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 [2019-11-16 00:43:12,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-16 00:43:12,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2019-11-16 00:43:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-16 00:43:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-16 00:43:12,857 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 4 [2019-11-16 00:43:12,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:43:12,858 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-16 00:43:12,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:43:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-16 00:43:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-16 00:43:12,858 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:43:12,858 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-16 00:43:12,859 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:43:12,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:43:12,859 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2019-11-16 00:43:12,859 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:43:12,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076115366] [2019-11-16 00:43:12,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:43:12,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:43:12,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:43:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:43:12,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:43:12,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076115366] [2019-11-16 00:43:12,877 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:43:12,877 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-16 00:43:12,877 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219346371] [2019-11-16 00:43:12,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:43:12,878 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:43:12,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:43:12,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:43:12,878 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-11-16 00:43:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:43:12,909 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-11-16 00:43:12,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:43:12,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-16 00:43:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:43:12,910 INFO L225 Difference]: With dead ends: 28 [2019-11-16 00:43:12,910 INFO L226 Difference]: Without dead ends: 24 [2019-11-16 00:43:12,911 INFO L600 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 [2019-11-16 00:43:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-16 00:43:12,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-16 00:43:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-16 00:43:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-16 00:43:12,915 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 5 [2019-11-16 00:43:12,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:43:12,915 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-16 00:43:12,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:43:12,915 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-16 00:43:12,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-16 00:43:12,916 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:43:12,916 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:43:12,916 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:43:12,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:43:12,917 INFO L82 PathProgramCache]: Analyzing trace with hash -442003725, now seen corresponding path program 1 times [2019-11-16 00:43:12,917 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:43:12,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529447286] [2019-11-16 00:43:12,917 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:43:12,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:43:12,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:43:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:43:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:43:13,017 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529447286] [2019-11-16 00:43:13,017 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:43:13,017 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:43:13,017 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347917364] [2019-11-16 00:43:13,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:43:13,018 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:43:13,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:43:13,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:43:13,019 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2019-11-16 00:43:13,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:43:13,054 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-11-16 00:43:13,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:43:13,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-11-16 00:43:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:43:13,057 INFO L225 Difference]: With dead ends: 24 [2019-11-16 00:43:13,057 INFO L226 Difference]: Without dead ends: 23 [2019-11-16 00:43:13,057 INFO L600 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 [2019-11-16 00:43:13,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-16 00:43:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-16 00:43:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-16 00:43:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-16 00:43:13,060 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2019-11-16 00:43:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:43:13,061 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-16 00:43:13,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:43:13,061 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-16 00:43:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-16 00:43:13,062 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:43:13,062 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:43:13,062 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:43:13,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:43:13,062 INFO L82 PathProgramCache]: Analyzing trace with hash -817213509, now seen corresponding path program 1 times [2019-11-16 00:43:13,063 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:43:13,063 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803358608] [2019-11-16 00:43:13,063 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:43:13,063 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:43:13,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:43:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:43:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:43:13,202 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:43:13,202 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-16 00:43:13,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:43:13 BoogieIcfgContainer [2019-11-16 00:43:13,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:43:13,233 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:43:13,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:43:13,233 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:43:13,234 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:43:12" (3/4) ... [2019-11-16 00:43:13,236 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-16 00:43:13,292 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7c847907-8097-4782-aa9d-4cf9268fbd10/bin/uautomizer/witness.graphml [2019-11-16 00:43:13,292 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:43:13,294 INFO L168 Benchmark]: Toolchain (without parser) took 1720.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -107.4 MB). Peak memory consumption was 43.6 MB. Max. memory is 11.5 GB. [2019-11-16 00:43:13,295 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:43:13,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-16 00:43:13,296 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.51 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. [2019-11-16 00:43:13,297 INFO L168 Benchmark]: Boogie Preprocessor took 36.92 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:43:13,297 INFO L168 Benchmark]: RCFGBuilder took 380.54 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:43:13,298 INFO L168 Benchmark]: TraceAbstraction took 845.61 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: 59.1 MB). Peak memory consumption was 59.1 MB. Max. memory is 11.5 GB. [2019-11-16 00:43:13,298 INFO L168 Benchmark]: Witness Printer took 59.34 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:43:13,301 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 352.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.51 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. * Boogie Preprocessor took 36.92 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 380.54 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 845.61 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: 59.1 MB). Peak memory consumption was 59.1 MB. Max. memory is 11.5 GB. * Witness Printer took 59.34 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: 5.4 MB). Peak memory consumption was 5.4 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: 0.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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...