./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/lcm1.c --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_9b4ac656-9f73-458c-8219-6fccc1e4d56c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/lcm1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/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 093505ea38d3426fa2a6ad5ac83682ac8063eb8d ..................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 11:21:42,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:21:42,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:21:43,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:21:43,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:21:43,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:21:43,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:21:43,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:21:43,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:21:43,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:21:43,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:21:43,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:21:43,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:21:43,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:21:43,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:21:43,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:21:43,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:21:43,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:21:43,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:21:43,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:21:43,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:21:43,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:21:43,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:21:43,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:21:43,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:21:43,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:21:43,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:21:43,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:21:43,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:21:43,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:21:43,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:21:43,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:21:43,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:21:43,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:21:43,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:21:43,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:21:43,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:21:43,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:21:43,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:21:43,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:21:43,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:21:43,071 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 11:21:43,097 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:21:43,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:21:43,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:21:43,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:21:43,110 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:21:43,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:21:43,110 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:21:43,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:21:43,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:21:43,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:21:43,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 11:21:43,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:21:43,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 11:21:43,112 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:21:43,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 11:21:43,112 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:21:43,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 11:21:43,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:21:43,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:21:43,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:21:43,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:21:43,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:21:43,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:21:43,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:21:43,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 11:21:43,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 11:21:43,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 11:21:43,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 11:21:43,117 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_9b4ac656-9f73-458c-8219-6fccc1e4d56c/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 -> 093505ea38d3426fa2a6ad5ac83682ac8063eb8d [2019-11-20 11:21:43,311 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:21:43,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:21:43,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:21:43,332 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:21:43,333 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:21:43,334 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/lcm1.c [2019-11-20 11:21:43,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/bin/uautomizer/data/8fa3bbc97/e1fe427d9bb94aa78547cc636e3c4f2e/FLAG8bede2e18 [2019-11-20 11:21:43,809 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:21:43,810 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/sv-benchmarks/c/nla-digbench/lcm1.c [2019-11-20 11:21:43,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/bin/uautomizer/data/8fa3bbc97/e1fe427d9bb94aa78547cc636e3c4f2e/FLAG8bede2e18 [2019-11-20 11:21:44,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/bin/uautomizer/data/8fa3bbc97/e1fe427d9bb94aa78547cc636e3c4f2e [2019-11-20 11:21:44,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:21:44,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 11:21:44,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:21:44,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:21:44,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:21:44,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:21:44" (1/1) ... [2019-11-20 11:21:44,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20998174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44, skipping insertion in model container [2019-11-20 11:21:44,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:21:44" (1/1) ... [2019-11-20 11:21:44,256 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:21:44,275 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:21:44,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:21:44,499 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:21:44,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:21:44,533 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:21:44,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44 WrapperNode [2019-11-20 11:21:44,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:21:44,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 11:21:44,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 11:21:44,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 11:21:44,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44" (1/1) ... [2019-11-20 11:21:44,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44" (1/1) ... [2019-11-20 11:21:44,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 11:21:44,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:21:44,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:21:44,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:21:44,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44" (1/1) ... [2019-11-20 11:21:44,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44" (1/1) ... [2019-11-20 11:21:44,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44" (1/1) ... [2019-11-20 11:21:44,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44" (1/1) ... [2019-11-20 11:21:44,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44" (1/1) ... [2019-11-20 11:21:44,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44" (1/1) ... [2019-11-20 11:21:44,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44" (1/1) ... [2019-11-20 11:21:44,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:21:44,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:21:44,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:21:44,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:21:44,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/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 11:21:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:21:44,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:21:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2019-11-20 11:21:45,003 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:21:45,003 INFO L285 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-20 11:21:45,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:21:45 BoogieIcfgContainer [2019-11-20 11:21:45,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:21:45,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:21:45,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:21:45,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:21:45,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:21:44" (1/3) ... [2019-11-20 11:21:45,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b760bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:21:45, skipping insertion in model container [2019-11-20 11:21:45,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:44" (2/3) ... [2019-11-20 11:21:45,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b760bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:21:45, skipping insertion in model container [2019-11-20 11:21:45,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:21:45" (3/3) ... [2019-11-20 11:21:45,013 INFO L109 eAbstractionObserver]: Analyzing ICFG lcm1.c [2019-11-20 11:21:45,023 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:21:45,029 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-20 11:21:45,041 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-20 11:21:45,063 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:21:45,063 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 11:21:45,063 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:21:45,063 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:21:45,064 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:21:45,064 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:21:45,064 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:21:45,064 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:21:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-20 11:21:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 11:21:45,084 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:21:45,084 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 11:21:45,085 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:21:45,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:21:45,091 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-20 11:21:45,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:21:45,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172264587] [2019-11-20 11:21:45,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:21:45,185 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 11:21:45,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354536610] [2019-11-20 11:21:45,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b4ac656-9f73-458c-8219-6fccc1e4d56c/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 11:22:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2019-11-20 11:22:20,727 WARN L168 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2019-11-20 11:22:20,727 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 11:22:20,932 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:22:20,947 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-11-20 11:22:20,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:22:20 BoogieIcfgContainer [2019-11-20 11:22:20,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:22:20,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:22:20,948 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:22:20,949 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:22:20,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:21:45" (3/4) ... [2019-11-20 11:22:20,952 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 11:22:20,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:22:20,954 INFO L168 Benchmark]: Toolchain (without parser) took 36712.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -142.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:22:20,955 INFO L168 Benchmark]: CDTParser took 0.27 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. [2019-11-20 11:22:20,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -190.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-11-20 11:22:20,956 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.90 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: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. [2019-11-20 11:22:20,957 INFO L168 Benchmark]: Boogie Preprocessor took 23.74 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-20 11:22:20,958 INFO L168 Benchmark]: RCFGBuilder took 410.39 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-11-20 11:22:20,958 INFO L168 Benchmark]: TraceAbstraction took 35942.40 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: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-20 11:22:20,959 INFO L168 Benchmark]: Witness Printer took 4.22 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 11:22:20,962 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 292.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -190.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.90 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: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.74 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 410.39 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 35942.40 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: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.22 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: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L18] unsigned a, b; [L19] unsigned x, y, u, v; [L20] a = __VERIFIER_nondet_unsigned_int() [L21] b = __VERIFIER_nondet_unsigned_int() [L28] x = a [L29] y = b [L30] u = b [L31] v = 0 [L33] COND TRUE 1 [L10] COND TRUE !(cond) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 5 error locations. Result: UNKNOWN, OverallTime: 35.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 35.5s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...