./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/trex02-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/trex02-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/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 07bb2313a3de352e598d6db901c754bf4b158c72 ................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:06:04,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:06:04,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:06:04,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:06:04,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:06:04,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:06:04,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:06:04,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:06:04,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:06:04,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:06:04,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:06:04,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:06:04,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:06:04,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:06:04,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:06:04,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:06:04,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:06:04,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:06:04,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:06:04,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:06:04,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:06:04,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:06:04,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:06:04,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:06:04,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:06:04,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:06:04,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:06:04,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:06:04,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:06:04,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:06:04,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:06:04,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:06:04,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:06:04,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:06:04,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:06:04,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:06:04,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:06:04,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:06:04,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:06:04,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:06:04,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:06:04,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:06:04,165 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:06:04,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:06:04,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:06:04,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:06:04,166 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:06:04,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:06:04,166 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:06:04,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:06:04,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:06:04,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:06:04,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:06:04,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:06:04,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:06:04,167 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:06:04,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:06:04,167 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:06:04,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:06:04,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:06:04,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:06:04,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:06:04,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:06:04,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:06:04,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:06:04,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:06:04,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:06:04,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:06:04,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:06:04,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:06:04,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:06:04,169 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_efafcd15-596e-400c-b3e0-4b964bf12f7d/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 -> 07bb2313a3de352e598d6db901c754bf4b158c72 [2019-12-07 17:06:04,271 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:06:04,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:06:04,283 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:06:04,284 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:06:04,284 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:06:04,285 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/bin/uautomizer/../../sv-benchmarks/c/loops/trex02-1.c [2019-12-07 17:06:04,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/bin/uautomizer/data/ed69521b9/f9a8cc93610a44e198560d5f4dac4b2b/FLAGe3c89de72 [2019-12-07 17:06:04,764 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:06:04,764 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/sv-benchmarks/c/loops/trex02-1.c [2019-12-07 17:06:04,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/bin/uautomizer/data/ed69521b9/f9a8cc93610a44e198560d5f4dac4b2b/FLAGe3c89de72 [2019-12-07 17:06:04,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/bin/uautomizer/data/ed69521b9/f9a8cc93610a44e198560d5f4dac4b2b [2019-12-07 17:06:04,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:06:04,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:06:04,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:06:04,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:06:04,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:06:04,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:06:04" (1/1) ... [2019-12-07 17:06:04,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be8e1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04, skipping insertion in model container [2019-12-07 17:06:04,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:06:04" (1/1) ... [2019-12-07 17:06:04,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:06:04,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:06:04,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:06:04,899 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:06:04,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:06:04,948 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:06:04,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04 WrapperNode [2019-12-07 17:06:04,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:06:04,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:06:04,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:06:04,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:06:04,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04" (1/1) ... [2019-12-07 17:06:04,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04" (1/1) ... [2019-12-07 17:06:04,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:06:04,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:06:04,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:06:04,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:06:04,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04" (1/1) ... [2019-12-07 17:06:04,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04" (1/1) ... [2019-12-07 17:06:04,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04" (1/1) ... [2019-12-07 17:06:04,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04" (1/1) ... [2019-12-07 17:06:04,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04" (1/1) ... [2019-12-07 17:06:04,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04" (1/1) ... [2019-12-07 17:06:04,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04" (1/1) ... [2019-12-07 17:06:04,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:06:04,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:06:04,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:06:04,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:06:04,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/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 [2019-12-07 17:06:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:06:05,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:06:05,113 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:06:05,113 INFO L287 CfgBuilder]: Removed 11 assume(true) statements. [2019-12-07 17:06:05,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:06:05 BoogieIcfgContainer [2019-12-07 17:06:05,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:06:05,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:06:05,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:06:05,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:06:05,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:06:04" (1/3) ... [2019-12-07 17:06:05,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1127a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:06:05, skipping insertion in model container [2019-12-07 17:06:05,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:04" (2/3) ... [2019-12-07 17:06:05,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1127a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:06:05, skipping insertion in model container [2019-12-07 17:06:05,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:06:05" (3/3) ... [2019-12-07 17:06:05,119 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-1.c [2019-12-07 17:06:05,125 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:06:05,128 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:06:05,135 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:06:05,149 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:06:05,150 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:06:05,150 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:06:05,150 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:06:05,150 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:06:05,150 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:06:05,150 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:06:05,150 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:06:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 17:06:05,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 17:06:05,162 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:06:05,163 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 17:06:05,163 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:06:05,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:06:05,167 INFO L82 PathProgramCache]: Analyzing trace with hash 889999271, now seen corresponding path program 1 times [2019-12-07 17:06:05,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:06:05,172 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884764188] [2019-12-07 17:06:05,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:06:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:06:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:06:05,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884764188] [2019-12-07 17:06:05,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:06:05,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:06:05,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946162815] [2019-12-07 17:06:05,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 17:06:05,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:06:05,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:06:05,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:06:05,255 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-12-07 17:06:05,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:06:05,265 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-12-07 17:06:05,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:06:05,266 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-12-07 17:06:05,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:06:05,272 INFO L225 Difference]: With dead ends: 18 [2019-12-07 17:06:05,272 INFO L226 Difference]: Without dead ends: 8 [2019-12-07 17:06:05,274 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:06:05,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-12-07 17:06:05,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-12-07 17:06:05,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 17:06:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-12-07 17:06:05,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2019-12-07 17:06:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:06:05,295 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-12-07 17:06:05,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 17:06:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-12-07 17:06:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 17:06:05,296 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:06:05,296 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 17:06:05,296 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:06:05,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:06:05,296 INFO L82 PathProgramCache]: Analyzing trace with hash 889641779, now seen corresponding path program 1 times [2019-12-07 17:06:05,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:06:05,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352860583] [2019-12-07 17:06:05,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:06:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:06:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:06:05,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352860583] [2019-12-07 17:06:05,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:06:05,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:06:05,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156571912] [2019-12-07 17:06:05,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:06:05,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:06:05,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:06:05,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:06:05,334 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-12-07 17:06:05,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:06:05,354 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2019-12-07 17:06:05,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:06:05,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-12-07 17:06:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:06:05,355 INFO L225 Difference]: With dead ends: 8 [2019-12-07 17:06:05,355 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:06:05,355 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:06:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:06:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:06:05,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:06:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:06:05,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-12-07 17:06:05,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:06:05,356 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:06:05,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:06:05,356 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:06:05,356 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:06:05,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 17:06:05,365 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 17:06:05,365 INFO L246 CegarLoopResult]: For program point L23(lines 23 24) no Hoare annotation was computed. [2019-12-07 17:06:05,365 INFO L246 CegarLoopResult]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2019-12-07 17:06:05,365 INFO L249 CegarLoopResult]: At program point L15-1(lines 15 25) the Hoare annotation is: true [2019-12-07 17:06:05,365 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-12-07 17:06:05,365 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 17:06:05,365 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 17:06:05,365 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 17:06:05,365 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-12-07 17:06:05,365 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-12-07 17:06:05,366 INFO L249 CegarLoopResult]: At program point L4-2(lines 1 30) the Hoare annotation is: true [2019-12-07 17:06:05,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:06:05 BoogieIcfgContainer [2019-12-07 17:06:05,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:06:05,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:06:05,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:06:05,372 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:06:05,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:06:05" (3/4) ... [2019-12-07 17:06:05,374 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:06:05,381 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 17:06:05,381 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 17:06:05,410 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_efafcd15-596e-400c-b3e0-4b964bf12f7d/bin/uautomizer/witness.graphml [2019-12-07 17:06:05,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:06:05,411 INFO L168 Benchmark]: Toolchain (without parser) took 631.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 942.0 MB in the beginning and 1.0 GB in the end (delta: -104.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:06:05,412 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:06:05,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:05,413 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.67 ms. Allocated memory is still 1.1 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. [2019-12-07 17:06:05,413 INFO L168 Benchmark]: Boogie Preprocessor took 11.52 ms. Allocated memory is still 1.1 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. [2019-12-07 17:06:05,413 INFO L168 Benchmark]: RCFGBuilder took 132.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:05,414 INFO L168 Benchmark]: TraceAbstraction took 256.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:05,414 INFO L168 Benchmark]: Witness Printer took 38.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:05,417 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.67 ms. Allocated memory is still 1.1 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. * Boogie Preprocessor took 11.52 ms. Allocated memory is still 1.1 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 132.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 256.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. * Witness Printer took 38.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 1 SDslu, 6 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 correct! Received shutdown request...