./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test07.c -s /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/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 3fb4305112f4412dd538a0b9d1d1441504f2d55d ............................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:08:53,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:08:53,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:08:53,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:08:53,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:08:53,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:08:53,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:08:53,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:08:53,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:08:53,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:08:53,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:08:53,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:08:53,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:08:53,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:08:53,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:08:53,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:08:53,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:08:53,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:08:53,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:08:53,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:08:53,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:08:53,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:08:53,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:08:53,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:08:53,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:08:53,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:08:53,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:08:53,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:08:53,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:08:53,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:08:53,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:08:53,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:08:53,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:08:53,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:08:53,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:08:53,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:08:53,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:08:53,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:08:53,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:08:53,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:08:53,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:08:53,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:08:53,723 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:08:53,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:08:53,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:08:53,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:08:53,725 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:08:53,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:08:53,726 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:08:53,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:08:53,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:08:53,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:08:53,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:08:53,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:08:53,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:08:53,727 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:08:53,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:08:53,728 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:08:53,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:08:53,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:08:53,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:08:53,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:08:53,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:08:53,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:08:53,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:08:53,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:08:53,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:08:53,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:08:53,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:08:53,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:08:53,731 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_14997f3e-ed31-45cb-9b1e-33311e00ed15/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 -> 3fb4305112f4412dd538a0b9d1d1441504f2d55d [2019-11-15 22:08:53,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:08:53,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:08:53,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:08:53,812 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:08:53,813 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:08:53,814 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test07.c [2019-11-15 22:08:53,877 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/bin/uautomizer/data/1a75e2b06/a9ba20be884243019ac7c15570b1d83b/FLAG1503caa17 [2019-11-15 22:08:54,311 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:08:54,312 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/sv-benchmarks/c/ldv-regression/test07.c [2019-11-15 22:08:54,319 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/bin/uautomizer/data/1a75e2b06/a9ba20be884243019ac7c15570b1d83b/FLAG1503caa17 [2019-11-15 22:08:54,705 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/bin/uautomizer/data/1a75e2b06/a9ba20be884243019ac7c15570b1d83b [2019-11-15 22:08:54,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:08:54,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:08:54,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:08:54,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:08:54,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:08:54,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:08:54" (1/1) ... [2019-11-15 22:08:54,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69750992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:54, skipping insertion in model container [2019-11-15 22:08:54,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:08:54" (1/1) ... [2019-11-15 22:08:54,728 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:08:54,747 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:08:55,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:08:55,112 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:08:55,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:08:55,153 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:08:55,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:55 WrapperNode [2019-11-15 22:08:55,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:08:55,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:08:55,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:08:55,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:08:55,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:55" (1/1) ... [2019-11-15 22:08:55,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:55" (1/1) ... [2019-11-15 22:08:55,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:08:55,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:08:55,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:08:55,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:08:55,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:55" (1/1) ... [2019-11-15 22:08:55,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:55" (1/1) ... [2019-11-15 22:08:55,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:55" (1/1) ... [2019-11-15 22:08:55,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:55" (1/1) ... [2019-11-15 22:08:55,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:55" (1/1) ... [2019-11-15 22:08:55,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:55" (1/1) ... [2019-11-15 22:08:55,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:55" (1/1) ... [2019-11-15 22:08:55,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:08:55,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:08:55,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:08:55,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:08:55,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/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 [2019-11-15 22:08:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:08:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:08:55,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:08:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:08:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-15 22:08:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:08:55,555 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:08:55,556 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 22:08:55,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:08:55 BoogieIcfgContainer [2019-11-15 22:08:55,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:08:55,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:08:55,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:08:55,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:08:55,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:08:54" (1/3) ... [2019-11-15 22:08:55,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7568f9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:08:55, skipping insertion in model container [2019-11-15 22:08:55,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:08:55" (2/3) ... [2019-11-15 22:08:55,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7568f9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:08:55, skipping insertion in model container [2019-11-15 22:08:55,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:08:55" (3/3) ... [2019-11-15 22:08:55,570 INFO L109 eAbstractionObserver]: Analyzing ICFG test07.c [2019-11-15 22:08:55,580 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:08:55,588 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:08:55,608 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:08:55,632 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:08:55,632 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:08:55,632 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:08:55,632 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:08:55,633 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:08:55,633 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:08:55,633 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:08:55,633 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:08:55,654 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-15 22:08:55,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 22:08:55,660 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:08:55,661 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 22:08:55,665 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:08:55,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:08:55,671 INFO L82 PathProgramCache]: Analyzing trace with hash 889508715, now seen corresponding path program 1 times [2019-11-15 22:08:55,681 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:08:55,682 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731775629] [2019-11-15 22:08:55,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:08:55,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:08:55,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:08:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:08:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:08:55,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731775629] [2019-11-15 22:08:55,953 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:08:55,954 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:08:55,954 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891474346] [2019-11-15 22:08:55,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:08:55,959 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:08:55,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:08:55,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:08:55,975 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2019-11-15 22:08:56,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:08:56,070 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-15 22:08:56,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:08:56,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-15 22:08:56,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:08:56,080 INFO L225 Difference]: With dead ends: 20 [2019-11-15 22:08:56,080 INFO L226 Difference]: Without dead ends: 7 [2019-11-15 22:08:56,084 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:08:56,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-15 22:08:56,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-15 22:08:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 22:08:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2019-11-15 22:08:56,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2019-11-15 22:08:56,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:08:56,115 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2019-11-15 22:08:56,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:08:56,116 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2019-11-15 22:08:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 22:08:56,116 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:08:56,116 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 22:08:56,117 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:08:56,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:08:56,117 INFO L82 PathProgramCache]: Analyzing trace with hash 889568297, now seen corresponding path program 1 times [2019-11-15 22:08:56,118 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:08:56,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446541148] [2019-11-15 22:08:56,118 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:08:56,118 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:08:56,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:08:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:08:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:08:56,318 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446541148] [2019-11-15 22:08:56,318 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:08:56,318 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:08:56,318 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659274243] [2019-11-15 22:08:56,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:08:56,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:08:56,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:08:56,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:08:56,321 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 4 states. [2019-11-15 22:08:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:08:56,351 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-11-15 22:08:56,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:08:56,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-15 22:08:56,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:08:56,352 INFO L225 Difference]: With dead ends: 7 [2019-11-15 22:08:56,352 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 22:08:56,353 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:08:56,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 22:08:56,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 22:08:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 22:08:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:08:56,354 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-11-15 22:08:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:08:56,354 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:08:56,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:08:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:08:56,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 22:08:56,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 22:08:56,383 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 22:08:56,383 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-15 22:08:56,384 INFO L439 ceAbstractionStarter]: At program point L30(lines 17 37) the Hoare annotation is: false [2019-11-15 22:08:56,384 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 22:08:56,384 INFO L443 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2019-11-15 22:08:56,384 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 22:08:56,384 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2019-11-15 22:08:56,385 INFO L439 ceAbstractionStarter]: At program point L13(lines 7 15) the Hoare annotation is: (and (not (= 0 |ULTIMATE.start_f_#res|)) (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base)) [2019-11-15 22:08:56,385 INFO L443 ceAbstractionStarter]: For program point L9(lines 9 14) no Hoare annotation was computed. [2019-11-15 22:08:56,385 INFO L446 ceAbstractionStarter]: At program point L36(lines 17 37) the Hoare annotation is: true [2019-11-15 22:08:56,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:08:56 BoogieIcfgContainer [2019-11-15 22:08:56,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:08:56,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:08:56,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:08:56,406 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:08:56,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:08:55" (3/4) ... [2019-11-15 22:08:56,411 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 22:08:56,433 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-15 22:08:56,434 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 22:08:56,461 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0 == \result) && p2 == p1) && p2 == p1 [2019-11-15 22:08:56,486 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_14997f3e-ed31-45cb-9b1e-33311e00ed15/bin/uautomizer/witness.graphml [2019-11-15 22:08:56,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:08:56,488 INFO L168 Benchmark]: Toolchain (without parser) took 1778.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -115.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:08:56,489 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:08:56,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -188.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:08:56,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.19 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. [2019-11-15 22:08:56,491 INFO L168 Benchmark]: Boogie Preprocessor took 20.31 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. [2019-11-15 22:08:56,492 INFO L168 Benchmark]: RCFGBuilder took 331.07 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2019-11-15 22:08:56,492 INFO L168 Benchmark]: TraceAbstraction took 844.85 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: 49.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:08:56,493 INFO L168 Benchmark]: Witness Printer took 82.77 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. [2019-11-15 22:08:56,496 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 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 444.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -188.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.19 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 20.31 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 331.07 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 844.85 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: 49.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 11.5 GB. * Witness Printer took 82.77 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: - PositiveResult [Line: 35]: 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: 7]: Loop Invariant Derived loop invariant: (!(0 == \result) && p2 == p1) && p2 == p1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 4 SDslu, 7 SDs, 0 SdLazy, 16 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 445 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...