./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_4.c --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_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_4.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/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 ef9ee2b82a40720ec57dc1562759dd601b686b38 ...................................................................................................................................................................................................................................................................... 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 08:56:47,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:47,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:47,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:47,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:47,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:47,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:47,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:47,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:47,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:47,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:47,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:47,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:47,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:47,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:47,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:47,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:48,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:48,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:48,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:48,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:48,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:48,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:48,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:48,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:48,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:48,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:48,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:48,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:48,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:48,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:48,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:48,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:48,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:48,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:48,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:48,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:48,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:48,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:48,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:48,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:48,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:56:48,043 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:48,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:48,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:48,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:48,045 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:48,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:48,045 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:48,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:48,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:48,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:48,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:56:48,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:48,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:56:48,046 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:48,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:48,047 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:48,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:56:48,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:48,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:48,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:48,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:48,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:48,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:48,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:48,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:56:48,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:48,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:48,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:56:48,049 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_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/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 -> ef9ee2b82a40720ec57dc1562759dd601b686b38 [2019-10-22 08:56:48,080 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:48,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:48,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:48,093 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:48,096 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:48,096 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/bin/uautomizer/../../sv-benchmarks/c/loops/while_infinite_loop_4.c [2019-10-22 08:56:48,142 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/bin/uautomizer/data/92146debe/520fed1ac72846e8bb169ea26009a6f1/FLAG43361515b [2019-10-22 08:56:48,531 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:48,532 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/sv-benchmarks/c/loops/while_infinite_loop_4.c [2019-10-22 08:56:48,537 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/bin/uautomizer/data/92146debe/520fed1ac72846e8bb169ea26009a6f1/FLAG43361515b [2019-10-22 08:56:48,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/bin/uautomizer/data/92146debe/520fed1ac72846e8bb169ea26009a6f1 [2019-10-22 08:56:48,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:48,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:48,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:48,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:48,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:48,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da10fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48, skipping insertion in model container [2019-10-22 08:56:48,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,566 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:48,585 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:48,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:48,731 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:48,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:48,836 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:48,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48 WrapperNode [2019-10-22 08:56:48,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:48,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:48,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:48,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:48,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:48,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:48,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:48,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:48,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... [2019-10-22 08:56:48,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:48,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:48,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:48,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:48,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/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 08:56:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:49,054 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:49,054 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-10-22 08:56:49,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:49 BoogieIcfgContainer [2019-10-22 08:56:49,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:49,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:49,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:49,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:49,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:48" (1/3) ... [2019-10-22 08:56:49,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4854314b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:49, skipping insertion in model container [2019-10-22 08:56:49,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:48" (2/3) ... [2019-10-22 08:56:49,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4854314b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:49, skipping insertion in model container [2019-10-22 08:56:49,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:49" (3/3) ... [2019-10-22 08:56:49,062 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4.c [2019-10-22 08:56:49,070 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:49,075 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 08:56:49,084 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 08:56:49,106 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:49,107 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:56:49,107 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:49,107 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:49,107 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:49,107 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:49,107 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:49,108 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:49,120 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-22 08:56:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:56:49,128 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:49,128 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:56:49,132 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:49,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:49,137 INFO L82 PathProgramCache]: Analyzing trace with hash 890491815, now seen corresponding path program 1 times [2019-10-22 08:56:49,145 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:49,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192289951] [2019-10-22 08:56:49,146 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,146 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,244 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 08:56:49,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192289951] [2019-10-22 08:56:49,246 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:49,246 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:56:49,247 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522432255] [2019-10-22 08:56:49,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:56:49,251 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:49,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:56:49,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:56:49,265 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-10-22 08:56:49,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:49,284 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2019-10-22 08:56:49,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:56:49,285 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 08:56:49,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:49,295 INFO L225 Difference]: With dead ends: 22 [2019-10-22 08:56:49,297 INFO L226 Difference]: Without dead ends: 8 [2019-10-22 08:56:49,300 INFO L600 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 [2019-10-22 08:56:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-10-22 08:56:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 08:56:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 08:56:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-10-22 08:56:49,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-10-22 08:56:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:49,333 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-10-22 08:56:49,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:56:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-10-22 08:56:49,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 08:56:49,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:49,333 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:49,334 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:49,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:49,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1810848111, now seen corresponding path program 1 times [2019-10-22 08:56:49,334 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:49,334 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793654202] [2019-10-22 08:56:49,335 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,335 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:49,377 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:49,378 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:56:49,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:49 BoogieIcfgContainer [2019-10-22 08:56:49,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:49,399 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:49,399 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:49,399 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:49,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:49" (3/4) ... [2019-10-22 08:56:49,403 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:56:49,433 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ded3d1c4-eae8-48e6-aa4b-ea974ecdf07e/bin/uautomizer/witness.graphml [2019-10-22 08:56:49,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:49,436 INFO L168 Benchmark]: Toolchain (without parser) took 883.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.7 MB). Free memory was 943.3 MB in the beginning and 1.2 GB in the end (delta: -211.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:49,436 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:49,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.7 MB). Free memory was 943.3 MB in the beginning and 1.2 GB in the end (delta: -255.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:49,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.87 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:49,438 INFO L168 Benchmark]: Boogie Preprocessor took 19.86 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:49,438 INFO L168 Benchmark]: RCFGBuilder took 168.92 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: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:49,439 INFO L168 Benchmark]: TraceAbstraction took 342.49 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:49,439 INFO L168 Benchmark]: Witness Printer took 34.67 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:49,442 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 284.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.7 MB). Free memory was 943.3 MB in the beginning and 1.2 GB in the end (delta: -255.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.87 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.86 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 168.92 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: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 342.49 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 34.67 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x=0; VAL [x=0] [L24] COND TRUE 1 VAL [x=0] [L14] COND TRUE 1 [L15] x=1 VAL [x=1] [L4] COND TRUE !(cond) VAL [x=1] [L5] __VERIFIER_error() VAL [x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 8 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=16occurred 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...