./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87afddccfd1da763b81be9f487d95a8fd1750032 ........................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:54:45,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:45,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:45,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:45,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:45,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:45,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:45,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:45,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:45,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:45,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:45,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:45,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:45,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:45,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:45,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:45,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:45,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:45,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:45,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:45,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:45,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:45,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:45,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:45,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:45,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:45,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:45,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:45,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:45,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:45,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:45,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:45,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:45,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:45,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:45,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:45,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:45,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:45,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:45,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:45,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:45,741 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:54:45,767 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:45,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:45,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:45,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:45,768 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:45,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:45,768 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:54:45,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:45,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:54:45,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:45,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:54:45,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:54:45,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:54:45,770 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:54:45,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:45,770 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:45,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:54:45,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:45,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:45,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:54:45,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:54:45,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:45,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:45,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:54:45,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:54:45,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:45,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:54:45,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:54:45,772 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/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87afddccfd1da763b81be9f487d95a8fd1750032 [2019-10-22 08:54:45,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:45,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:45,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:45,825 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:45,825 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:45,825 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i [2019-10-22 08:54:45,873 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer/data/868393074/c1b0facc26e64626aef28f7962abc05d/FLAGfed676d82 [2019-10-22 08:54:46,255 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:46,255 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/sv-benchmarks/c/ldv-regression/test_while_int.c_1.i [2019-10-22 08:54:46,261 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer/data/868393074/c1b0facc26e64626aef28f7962abc05d/FLAGfed676d82 [2019-10-22 08:54:46,273 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer/data/868393074/c1b0facc26e64626aef28f7962abc05d [2019-10-22 08:54:46,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:46,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:46,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:46,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:46,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:46,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a449db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46, skipping insertion in model container [2019-10-22 08:54:46,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,295 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:46,309 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:46,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:46,469 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:46,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:46,588 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:46,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46 WrapperNode [2019-10-22 08:54:46,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:46,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:46,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:46,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:46,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:46,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:46,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:46,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:46,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:46,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:46,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:46,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:46,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/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 [2019-10-22 08:54:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:46,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:46,806 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:46,806 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 08:54:46,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:46 BoogieIcfgContainer [2019-10-22 08:54:46,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:46,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:54:46,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:54:46,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:54:46,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:54:46" (1/3) ... [2019-10-22 08:54:46,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b660d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:46, skipping insertion in model container [2019-10-22 08:54:46,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46" (2/3) ... [2019-10-22 08:54:46,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b660d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:46, skipping insertion in model container [2019-10-22 08:54:46,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:46" (3/3) ... [2019-10-22 08:54:46,814 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2019-10-22 08:54:46,822 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:54:46,828 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:54:46,839 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:54:46,859 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:54:46,860 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:54:46,860 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:54:46,860 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:46,860 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:46,860 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:54:46,860 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:46,860 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:54:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-10-22 08:54:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 08:54:46,878 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:46,879 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 08:54:46,880 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:46,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:46,885 INFO L82 PathProgramCache]: Analyzing trace with hash 963404, now seen corresponding path program 1 times [2019-10-22 08:54:46,893 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:46,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480132607] [2019-10-22 08:54:46,894 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:46,894 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:46,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:47,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480132607] [2019-10-22 08:54:47,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:47,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:47,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787937427] [2019-10-22 08:54:47,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:54:47,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:47,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:47,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:47,029 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-10-22 08:54:47,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:47,066 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2019-10-22 08:54:47,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:47,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-10-22 08:54:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:47,076 INFO L225 Difference]: With dead ends: 20 [2019-10-22 08:54:47,076 INFO L226 Difference]: Without dead ends: 8 [2019-10-22 08:54:47,079 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-10-22 08:54:47,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-10-22 08:54:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 08:54:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-10-22 08:54:47,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-10-22 08:54:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:47,107 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-10-22 08:54:47,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:54:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-10-22 08:54:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:54:47,108 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:47,108 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-10-22 08:54:47,108 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:47,108 INFO L82 PathProgramCache]: Analyzing trace with hash 925765417, now seen corresponding path program 1 times [2019-10-22 08:54:47,109 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:47,109 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415120733] [2019-10-22 08:54:47,109 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:47,109 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:47,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:47,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415120733] [2019-10-22 08:54:47,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503427375] [2019-10-22 08:54:47,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:47,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:54:47,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:47,218 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:47,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-10-22 08:54:47,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809144867] [2019-10-22 08:54:47,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:54:47,220 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:47,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:54:47,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:47,221 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-10-22 08:54:47,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:47,253 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-10-22 08:54:47,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:54:47,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-10-22 08:54:47,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:47,254 INFO L225 Difference]: With dead ends: 12 [2019-10-22 08:54:47,254 INFO L226 Difference]: Without dead ends: 10 [2019-10-22 08:54:47,255 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:47,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-10-22 08:54:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-10-22 08:54:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 08:54:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-10-22 08:54:47,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-10-22 08:54:47,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:47,258 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-10-22 08:54:47,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:54:47,258 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-10-22 08:54:47,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 08:54:47,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:47,259 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-10-22 08:54:47,460 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:47,460 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:47,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:47,461 INFO L82 PathProgramCache]: Analyzing trace with hash 602269638, now seen corresponding path program 2 times [2019-10-22 08:54:47,461 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:47,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745377945] [2019-10-22 08:54:47,461 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:47,462 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:47,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:47,487 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:47,487 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:54:47,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:54:47 BoogieIcfgContainer [2019-10-22 08:54:47,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:54:47,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:47,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:47,503 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:47,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:46" (3/4) ... [2019-10-22 08:54:47,506 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:54:47,553 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1c216d11-7b9b-4914-87c8-2fb3d851765e/bin/uautomizer/witness.graphml [2019-10-22 08:54:47,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:47,556 INFO L168 Benchmark]: Toolchain (without parser) took 1278.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:47,558 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:47,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.0 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -247.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:47,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:47,560 INFO L168 Benchmark]: Boogie Preprocessor took 17.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:47,561 INFO L168 Benchmark]: RCFGBuilder took 172.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:47,561 INFO L168 Benchmark]: TraceAbstraction took 694.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:47,562 INFO L168 Benchmark]: Witness Printer took 51.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:47,564 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 311.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.0 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -247.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 172.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 694.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * Witness Printer took 51.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i=0; [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 3 SDslu, 11 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 151 SizeOfPredicates, 1 NumberOfNonLiveVariables, 14 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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...