./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54c9c3f123e280a35d761deadfd537de0a28f053 ................................................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-26 02:10:07,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:10:07,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:10:07,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:10:07,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:10:07,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:10:07,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:10:07,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:10:07,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:10:07,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:10:07,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:10:07,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:10:07,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:10:07,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:10:07,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:10:07,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:10:07,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:10:07,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:10:07,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:10:07,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:10:07,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:10:07,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:10:07,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:10:07,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:10:07,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:10:07,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:10:07,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:10:07,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:10:07,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:10:07,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:10:07,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:10:07,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:10:07,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:10:07,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:10:07,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:10:07,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:10:07,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:10:07,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:10:07,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:10:07,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:10:07,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:10:07,658 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:10:07,683 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:10:07,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:10:07,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:10:07,684 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:10:07,685 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:10:07,685 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:10:07,685 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:10:07,685 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:10:07,685 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:10:07,685 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:10:07,686 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:10:07,686 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:10:07,686 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:10:07,686 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:10:07,686 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:10:07,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:10:07,687 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:10:07,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:10:07,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:10:07,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:10:07,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:10:07,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:10:07,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:10:07,688 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:10:07,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:10:07,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:10:07,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:10:07,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:10:07,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:10:07,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:10:07,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:10:07,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:10:07,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:10:07,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:10:07,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:10:07,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:10:07,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:10:07,691 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan 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 -> Taipan 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 -> 54c9c3f123e280a35d761deadfd537de0a28f053 [2019-11-26 02:10:07,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:10:07,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:10:07,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:10:07,849 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:10:07,850 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:10:07,850 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test22-2.c [2019-11-26 02:10:07,898 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan/data/3987894da/f3f29733969842a7bd1a9d333ec2a1d0/FLAG6e9e7ceea [2019-11-26 02:10:08,285 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:10:08,286 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/sv-benchmarks/c/ldv-regression/test22-2.c [2019-11-26 02:10:08,292 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan/data/3987894da/f3f29733969842a7bd1a9d333ec2a1d0/FLAG6e9e7ceea [2019-11-26 02:10:08,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan/data/3987894da/f3f29733969842a7bd1a9d333ec2a1d0 [2019-11-26 02:10:08,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:10:08,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:10:08,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:10:08,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:10:08,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:10:08,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:10:08" (1/1) ... [2019-11-26 02:10:08,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d30fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08, skipping insertion in model container [2019-11-26 02:10:08,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:10:08" (1/1) ... [2019-11-26 02:10:08,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:10:08,347 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:10:08,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:10:08,648 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:10:08,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:10:08,678 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:10:08,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08 WrapperNode [2019-11-26 02:10:08,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:10:08,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:10:08,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:10:08,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:10:08,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08" (1/1) ... [2019-11-26 02:10:08,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08" (1/1) ... [2019-11-26 02:10:08,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:10:08,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:10:08,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:10:08,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:10:08,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08" (1/1) ... [2019-11-26 02:10:08,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08" (1/1) ... [2019-11-26 02:10:08,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08" (1/1) ... [2019-11-26 02:10:08,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08" (1/1) ... [2019-11-26 02:10:08,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08" (1/1) ... [2019-11-26 02:10:08,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08" (1/1) ... [2019-11-26 02:10:08,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08" (1/1) ... [2019-11-26 02:10:08,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:10:08,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:10:08,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:10:08,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:10:08,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan/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 [2019-11-26 02:10:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-26 02:10:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:10:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:10:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:10:08,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:10:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:10:09,319 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:10:09,319 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-26 02:10:09,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:10:09 BoogieIcfgContainer [2019-11-26 02:10:09,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:10:09,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:10:09,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:10:09,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:10:09,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:10:08" (1/3) ... [2019-11-26 02:10:09,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4b6a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:10:09, skipping insertion in model container [2019-11-26 02:10:09,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:10:08" (2/3) ... [2019-11-26 02:10:09,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4b6a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:10:09, skipping insertion in model container [2019-11-26 02:10:09,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:10:09" (3/3) ... [2019-11-26 02:10:09,327 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2019-11-26 02:10:09,335 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:10:09,341 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:10:09,351 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:10:09,370 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:10:09,371 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:10:09,371 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:10:09,371 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:10:09,371 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:10:09,371 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:10:09,371 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:10:09,371 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:10:09,381 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-26 02:10:09,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:10:09,385 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:10:09,385 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:10:09,386 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:10:09,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:10:09,389 INFO L82 PathProgramCache]: Analyzing trace with hash -820906194, now seen corresponding path program 1 times [2019-11-26 02:10:09,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:10:09,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886866451] [2019-11-26 02:10:09,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:10:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:10:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:10:09,523 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886866451] [2019-11-26 02:10:09,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:10:09,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:10:09,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42948329] [2019-11-26 02:10:09,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:10:09,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:10:09,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:10:09,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:10:09,544 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-26 02:10:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:10:09,558 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-26 02:10:09,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:10:09,560 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-26 02:10:09,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:10:09,568 INFO L225 Difference]: With dead ends: 18 [2019-11-26 02:10:09,569 INFO L226 Difference]: Without dead ends: 8 [2019-11-26 02:10:09,572 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:10:09,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-26 02:10:09,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-26 02:10:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-26 02:10:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-26 02:10:09,604 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-26 02:10:09,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:10:09,604 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-26 02:10:09,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:10:09,604 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-26 02:10:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:10:09,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:10:09,605 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:10:09,605 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:10:09,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:10:09,605 INFO L82 PathProgramCache]: Analyzing trace with hash 314486783, now seen corresponding path program 1 times [2019-11-26 02:10:09,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:10:09,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016507419] [2019-11-26 02:10:09,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:10:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:10:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:10:09,739 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:10:09,739 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:10:09,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:10:09 BoogieIcfgContainer [2019-11-26 02:10:09,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:10:09,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:10:09,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:10:09,771 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:10:09,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:10:09" (3/4) ... [2019-11-26 02:10:09,774 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:10:09,819 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0c69b96d-857c-4b5d-9173-f46444e71e74/bin/utaipan/witness.graphml [2019-11-26 02:10:09,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:10:09,822 INFO L168 Benchmark]: Toolchain (without parser) took 1509.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -117.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:10:09,822 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:10:09,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:10:09,823 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.85 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. [2019-11-26 02:10:09,824 INFO L168 Benchmark]: Boogie Preprocessor took 24.97 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:10:09,824 INFO L168 Benchmark]: RCFGBuilder took 580.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:10:09,825 INFO L168 Benchmark]: TraceAbstraction took 449.36 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:10:09,825 INFO L168 Benchmark]: Witness Printer took 48.72 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. [2019-11-26 02:10:09,827 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 363.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.85 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 24.97 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 580.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 449.36 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. * Witness Printer took 48.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [d1={6:0}, d2={5:0}] [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) VAL [d1={6:0}, d2={5:0}] [L38] COND FALSE !(i < *pa) [L27] EXPR s1->a [L27] return s1->a == i; [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() VAL [d1={6:0}, d2={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...