./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test30-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test30-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6fbbb3f72a429bcf66c4c5832d8f584c26ac0d5 .............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:15:19,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:15:19,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:15:19,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:15:19,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:15:19,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:15:19,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:15:19,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:15:19,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:15:19,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:15:19,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:15:19,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:15:19,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:15:19,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:15:19,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:15:19,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:15:19,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:15:19,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:15:19,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:15:19,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:15:19,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:15:19,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:15:19,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:15:19,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:15:19,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:15:19,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:15:19,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:15:19,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:15:19,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:15:19,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:15:19,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:15:19,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:15:19,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:15:19,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:15:19,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:15:19,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:15:19,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:15:19,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:15:19,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:15:19,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:15:19,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:15:19,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:15:19,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:15:19,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:15:19,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:15:19,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:15:19,301 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:15:19,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:15:19,301 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:15:19,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:15:19,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:15:19,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:15:19,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:15:19,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:15:19,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:15:19,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:15:19,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:15:19,303 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:15:19,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:15:19,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:15:19,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:15:19,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:15:19,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:15:19,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:15:19,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:15:19,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:15:19,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:15:19,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:15:19,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:15:19,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:15:19,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:15:19,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6fbbb3f72a429bcf66c4c5832d8f584c26ac0d5 [2020-11-28 03:15:19,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:15:19,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:15:19,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:15:19,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:15:19,608 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:15:19,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test30-1.c [2020-11-28 03:15:19,689 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer/data/21bcd2e07/fee92a19018a43b191a76ccbad19053b/FLAGe51038531 [2020-11-28 03:15:20,120 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:15:20,121 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/sv-benchmarks/c/ldv-regression/test30-1.c [2020-11-28 03:15:20,126 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer/data/21bcd2e07/fee92a19018a43b191a76ccbad19053b/FLAGe51038531 [2020-11-28 03:15:20,511 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer/data/21bcd2e07/fee92a19018a43b191a76ccbad19053b [2020-11-28 03:15:20,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:15:20,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:15:20,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:20,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:15:20,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:15:20,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:20" (1/1) ... [2020-11-28 03:15:20,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186c622b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20, skipping insertion in model container [2020-11-28 03:15:20,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:20" (1/1) ... [2020-11-28 03:15:20,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:15:20,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:15:20,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:15:20,747 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:15:20,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:15:20,775 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:15:20,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20 WrapperNode [2020-11-28 03:15:20,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:20,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:15:20,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:15:20,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:15:20,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20" (1/1) ... [2020-11-28 03:15:20,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20" (1/1) ... [2020-11-28 03:15:20,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:15:20,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:15:20,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:15:20,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:15:20,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20" (1/1) ... [2020-11-28 03:15:20,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20" (1/1) ... [2020-11-28 03:15:20,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20" (1/1) ... [2020-11-28 03:15:20,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20" (1/1) ... [2020-11-28 03:15:20,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20" (1/1) ... [2020-11-28 03:15:20,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20" (1/1) ... [2020-11-28 03:15:20,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20" (1/1) ... [2020-11-28 03:15:20,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:15:20,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:15:20,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:15:20,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:15:20,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/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 [2020-11-28 03:15:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:15:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-28 03:15:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:15:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:15:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:15:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:15:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:15:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:15:21,205 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:15:21,205 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:15:21,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:21 BoogieIcfgContainer [2020-11-28 03:15:21,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:15:21,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:15:21,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:15:21,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:15:21,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:15:20" (1/3) ... [2020-11-28 03:15:21,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e537406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:21, skipping insertion in model container [2020-11-28 03:15:21,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:20" (2/3) ... [2020-11-28 03:15:21,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e537406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:21, skipping insertion in model container [2020-11-28 03:15:21,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:21" (3/3) ... [2020-11-28 03:15:21,232 INFO L111 eAbstractionObserver]: Analyzing ICFG test30-1.c [2020-11-28 03:15:21,252 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:15:21,257 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:15:21,277 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:15:21,311 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:15:21,312 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:15:21,312 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:15:21,312 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:15:21,312 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:15:21,312 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:15:21,312 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:15:21,312 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:15:21,335 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-28 03:15:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:15:21,343 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:21,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:15:21,344 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:15:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:21,351 INFO L82 PathProgramCache]: Analyzing trace with hash 889475945, now seen corresponding path program 1 times [2020-11-28 03:15:21,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:21,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612509387] [2020-11-28 03:15:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:21,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612509387] [2020-11-28 03:15:21,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:21,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:15:21,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022691808] [2020-11-28 03:15:21,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:15:21,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:21,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:15:21,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:21,793 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 5 states. [2020-11-28 03:15:21,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:21,846 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-11-28 03:15:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:15:21,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-28 03:15:21,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:21,852 INFO L225 Difference]: With dead ends: 14 [2020-11-28 03:15:21,853 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:15:21,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:15:21,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:15:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:15:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:15:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:15:21,889 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-11-28 03:15:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:21,889 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:15:21,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:15:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:15:21,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:15:21,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:15:21,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:15:21,908 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:15:21,908 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:15:21,908 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:15:21,908 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:15:21,908 INFO L270 CegarLoopResult]: At program point L28(lines 22 35) the Hoare annotation is: false [2020-11-28 03:15:21,908 INFO L274 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-11-28 03:15:21,909 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:15:21,909 INFO L274 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-11-28 03:15:21,909 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-28 03:15:21,909 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:15:21,909 INFO L270 CegarLoopResult]: At program point L34(lines 21 35) the Hoare annotation is: (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) [2020-11-28 03:15:21,920 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 03:15:21,921 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 03:15:21,924 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 03:15:21,924 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 03:15:21,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:15:21 BoogieIcfgContainer [2020-11-28 03:15:21,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:15:21,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:15:21,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:15:21,928 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:15:21,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:21" (3/4) ... [2020-11-28 03:15:21,932 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:15:21,941 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 03:15:21,942 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 03:15:21,942 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:15:21,942 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:15:21,981 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_abda2185-2692-40d6-8a0b-269d136c0d4a/bin/uautomizer/witness.graphml [2020-11-28 03:15:21,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:15:21,983 INFO L168 Benchmark]: Toolchain (without parser) took 1466.93 ms. Allocated memory is still 96.5 MB. Free memory was 66.6 MB in the beginning and 68.6 MB in the end (delta: -2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:21,984 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 79.7 MB. Free memory was 52.1 MB in the beginning and 52.1 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:21,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.44 ms. Allocated memory is still 96.5 MB. Free memory was 66.5 MB in the beginning and 74.3 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:21,985 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.59 ms. Allocated memory is still 96.5 MB. Free memory was 74.3 MB in the beginning and 72.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:21,986 INFO L168 Benchmark]: Boogie Preprocessor took 21.93 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 71.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:21,987 INFO L168 Benchmark]: RCFGBuilder took 373.29 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 57.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:21,987 INFO L168 Benchmark]: TraceAbstraction took 709.67 ms. Allocated memory is still 96.5 MB. Free memory was 57.6 MB in the beginning and 71.5 MB in the end (delta: -13.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:21,988 INFO L168 Benchmark]: Witness Printer took 53.84 ms. Allocated memory is still 96.5 MB. Free memory was 71.3 MB in the beginning and 68.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:21,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 79.7 MB. Free memory was 52.1 MB in the beginning and 52.1 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.44 ms. Allocated memory is still 96.5 MB. Free memory was 66.5 MB in the beginning and 74.3 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.59 ms. Allocated memory is still 96.5 MB. Free memory was 74.3 MB in the beginning and 72.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.93 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 71.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 373.29 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 57.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 709.67 ms. Allocated memory is still 96.5 MB. Free memory was 57.6 MB in the beginning and 71.5 MB in the end (delta: -13.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 53.84 ms. Allocated memory is still 96.5 MB. Free memory was 71.3 MB in the beginning and 68.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant [2020-11-28 03:15:22,001 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 03:15:22,001 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 03:15:22,001 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 03:15:22,002 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: unknown-#memory_int-unknown[a][a] == unknown-#memory_int-unknown[b][b] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 7 SDs, 0 SdLazy, 9 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 330 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...