./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test_while_int.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_while_int.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/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 5a78e5ac8a70d10b48fa6c5955c8640de4def14b .................................................................................................................................................................................................................................................................................................................. 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 0.1.24-678e011 [2019-11-20 04:19:52,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:19:52,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:19:52,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:19:52,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:19:52,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:19:52,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:19:52,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:19:52,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:19:52,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:19:52,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:19:52,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:19:52,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:19:52,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:19:52,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:19:52,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:19:52,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:19:52,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:19:52,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:19:52,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:19:52,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:19:52,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:19:52,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:19:52,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:19:52,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:19:52,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:19:52,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:19:52,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:19:52,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:19:52,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:19:52,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:19:52,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:19:52,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:19:52,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:19:52,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:19:52,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:19:52,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:19:52,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:19:52,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:19:52,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:19:52,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:19:52,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 04:19:53,017 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:19:53,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:19:53,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:19:53,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:19:53,019 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:19:53,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:19:53,020 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:19:53,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:19:53,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:19:53,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:19:53,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:19:53,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:19:53,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:19:53,022 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:19:53,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:19:53,022 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:19:53,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:19:53,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:19:53,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:19:53,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:19:53,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:19:53,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:19:53,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:19:53,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:19:53,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:19:53,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:19:53,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:19:53,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:19:53,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/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 -> 5a78e5ac8a70d10b48fa6c5955c8640de4def14b [2019-11-20 04:19:53,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:19:53,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:19:53,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:19:53,201 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:19:53,202 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:19:53,203 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test_while_int.i [2019-11-20 04:19:53,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/bin/uautomizer/data/0d80bd476/29b5ddde3e0e426aa4e0b204fa18e76d/FLAG0d8ff1520 [2019-11-20 04:19:53,701 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:19:53,702 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/sv-benchmarks/c/ldv-regression/test_while_int.i [2019-11-20 04:19:53,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/bin/uautomizer/data/0d80bd476/29b5ddde3e0e426aa4e0b204fa18e76d/FLAG0d8ff1520 [2019-11-20 04:19:54,102 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/bin/uautomizer/data/0d80bd476/29b5ddde3e0e426aa4e0b204fa18e76d [2019-11-20 04:19:54,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:19:54,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:19:54,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:19:54,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:19:54,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:19:54,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:19:54" (1/1) ... [2019-11-20 04:19:54,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba232f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54, skipping insertion in model container [2019-11-20 04:19:54,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:19:54" (1/1) ... [2019-11-20 04:19:54,125 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:19:54,143 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:19:54,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:19:54,360 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:19:54,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:19:54,385 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:19:54,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54 WrapperNode [2019-11-20 04:19:54,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:19:54,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:19:54,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:19:54,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:19:54,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54" (1/1) ... [2019-11-20 04:19:54,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54" (1/1) ... [2019-11-20 04:19:54,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:19:54,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:19:54,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:19:54,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:19:54,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54" (1/1) ... [2019-11-20 04:19:54,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54" (1/1) ... [2019-11-20 04:19:54,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54" (1/1) ... [2019-11-20 04:19:54,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54" (1/1) ... [2019-11-20 04:19:54,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54" (1/1) ... [2019-11-20 04:19:54,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54" (1/1) ... [2019-11-20 04:19:54,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54" (1/1) ... [2019-11-20 04:19:54,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:19:54,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:19:54,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:19:54,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:19:54,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:19:54,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:19:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:19:54,626 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:19:54,626 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-20 04:19:54,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:19:54 BoogieIcfgContainer [2019-11-20 04:19:54,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:19:54,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:19:54,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:19:54,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:19:54,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:19:54" (1/3) ... [2019-11-20 04:19:54,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569c312d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:19:54, skipping insertion in model container [2019-11-20 04:19:54,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:19:54" (2/3) ... [2019-11-20 04:19:54,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569c312d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:19:54, skipping insertion in model container [2019-11-20 04:19:54,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:19:54" (3/3) ... [2019-11-20 04:19:54,637 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2019-11-20 04:19:54,646 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:19:54,651 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 04:19:54,659 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 04:19:54,679 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:19:54,679 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:19:54,679 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:19:54,680 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:19:54,680 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:19:54,680 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:19:54,680 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:19:54,680 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:19:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-20 04:19:54,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 04:19:54,696 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:19:54,697 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 04:19:54,697 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:19:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:19:54,703 INFO L82 PathProgramCache]: Analyzing trace with hash 963404, now seen corresponding path program 1 times [2019-11-20 04:19:54,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:19:54,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890616214] [2019-11-20 04:19:54,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:19:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:19:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:19:54,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890616214] [2019-11-20 04:19:54,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:19:54,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 04:19:54,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294479884] [2019-11-20 04:19:54,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:19:54,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:19:54,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:19:54,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:19:54,897 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-11-20 04:19:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:19:54,948 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2019-11-20 04:19:54,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:19:54,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-20 04:19:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:19:54,958 INFO L225 Difference]: With dead ends: 19 [2019-11-20 04:19:54,959 INFO L226 Difference]: Without dead ends: 7 [2019-11-20 04:19:54,961 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:19:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-20 04:19:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-20 04:19:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 04:19:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-20 04:19:54,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-11-20 04:19:54,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:19:54,995 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-20 04:19:54,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:19:54,995 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-20 04:19:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 04:19:54,996 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:19:54,996 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-11-20 04:19:54,996 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:19:54,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:19:54,997 INFO L82 PathProgramCache]: Analyzing trace with hash 925765417, now seen corresponding path program 1 times [2019-11-20 04:19:54,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:19:54,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180262543] [2019-11-20 04:19:54,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:19:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:19:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:19:55,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180262543] [2019-11-20 04:19:55,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232210086] [2019-11-20 04:19:55,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/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 [2019-11-20 04:19:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:19:55,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 04:19:55,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:19:55,105 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:19:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:19:55,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:19:55,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-20 04:19:55,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166352227] [2019-11-20 04:19:55,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 04:19:55,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:19:55,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 04:19:55,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 04:19:55,142 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2019-11-20 04:19:55,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:19:55,196 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-20 04:19:55,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 04:19:55,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-20 04:19:55,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:19:55,198 INFO L225 Difference]: With dead ends: 12 [2019-11-20 04:19:55,199 INFO L226 Difference]: Without dead ends: 10 [2019-11-20 04:19:55,199 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-20 04:19:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-20 04:19:55,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-20 04:19:55,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 04:19:55,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-20 04:19:55,202 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-11-20 04:19:55,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:19:55,202 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-20 04:19:55,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 04:19:55,203 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-20 04:19:55,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 04:19:55,203 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:19:55,203 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-11-20 04:19:55,404 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:19:55,404 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:19:55,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:19:55,405 INFO L82 PathProgramCache]: Analyzing trace with hash 602269638, now seen corresponding path program 2 times [2019-11-20 04:19:55,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:19:55,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916407838] [2019-11-20 04:19:55,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:19:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:19:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:19:55,444 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:19:55,444 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 04:19:55,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:19:55 BoogieIcfgContainer [2019-11-20 04:19:55,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:19:55,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:19:55,459 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:19:55,460 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:19:55,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:19:54" (3/4) ... [2019-11-20 04:19:55,462 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 04:19:55,497 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8a2929e6-1382-44c1-9fc1-076c19b4146a/bin/uautomizer/witness.graphml [2019-11-20 04:19:55,498 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:19:55,499 INFO L168 Benchmark]: Toolchain (without parser) took 1392.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -118.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 11.5 GB. [2019-11-20 04:19:55,500 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:19:55,501 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -179.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-20 04:19:55,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.70 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. [2019-11-20 04:19:55,501 INFO L168 Benchmark]: Boogie Preprocessor took 14.57 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. [2019-11-20 04:19:55,502 INFO L168 Benchmark]: RCFGBuilder took 200.29 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-20 04:19:55,503 INFO L168 Benchmark]: TraceAbstraction took 830.68 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: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:19:55,503 INFO L168 Benchmark]: Witness Printer took 38.30 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. [2019-11-20 04:19:55,506 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 278.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -179.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.70 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 14.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 200.29 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 830.68 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: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 11.5 GB. * Witness Printer took 38.30 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: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] int i=0; [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 7 SDslu, 15 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 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, 1 StatesRemovedByMinimization, 1 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, 159 SizeOfPredicates, 3 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 9 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...