./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/brs3f.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_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/brs3f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/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 5a6b49f9c2a6d2eda01ab26465c2ce5a73ff1827 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:13:53,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:53,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:53,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:53,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:53,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:53,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:53,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:53,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:53,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:53,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:53,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:53,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:53,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:53,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:53,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:53,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:53,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:53,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:53,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:53,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:53,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:53,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:53,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:53,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:53,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:53,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:53,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:53,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:53,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:53,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:53,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:53,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:53,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:53,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:53,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:53,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:53,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:53,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:53,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:53,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:53,184 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:13:53,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:53,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:53,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:53,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:53,239 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:53,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:53,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:13:53,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:53,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:13:53,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:53,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:13:53,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:13:53,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:13:53,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:13:53,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:53,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:53,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:13:53,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:53,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:53,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:13:53,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:13:53,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:53,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:53,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:13:53,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:13:53,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:53,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:13:53,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:13:53,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:53,248 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_49b9439e-cfe4-448c-8992-d7dafac6fd16/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a6b49f9c2a6d2eda01ab26465c2ce5a73ff1827 [2020-11-28 03:13:53,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:53,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:53,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:53,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:53,707 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:53,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer/../../sv-benchmarks/c/array-fpi/brs3f.c [2020-11-28 03:13:53,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer/data/8120c46dc/ce13c3476e12440e8b50e0690ee11374/FLAGa38f549b8 [2020-11-28 03:13:54,444 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:54,446 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/sv-benchmarks/c/array-fpi/brs3f.c [2020-11-28 03:13:54,460 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer/data/8120c46dc/ce13c3476e12440e8b50e0690ee11374/FLAGa38f549b8 [2020-11-28 03:13:54,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer/data/8120c46dc/ce13c3476e12440e8b50e0690ee11374 [2020-11-28 03:13:54,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:54,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:54,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:54,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:54,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:54,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:54" (1/1) ... [2020-11-28 03:13:54,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5328e528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:54, skipping insertion in model container [2020-11-28 03:13:54,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:54" (1/1) ... [2020-11-28 03:13:54,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:54,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:55,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:55,109 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:55,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:55,153 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:55,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55 WrapperNode [2020-11-28 03:13:55,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:55,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:55,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:55,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:55,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:55,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:55,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:55,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:55,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... [2020-11-28 03:13:55,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:55,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:55,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:55,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:55,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/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 03:13:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:13:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:13:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:13:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:13:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:55,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:13:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:13:55,845 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:55,846 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-28 03:13:55,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:55 BoogieIcfgContainer [2020-11-28 03:13:55,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:55,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:13:55,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:13:55,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:13:55,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:54" (1/3) ... [2020-11-28 03:13:55,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@caf6ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:55, skipping insertion in model container [2020-11-28 03:13:55,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:55" (2/3) ... [2020-11-28 03:13:55,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@caf6ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:55, skipping insertion in model container [2020-11-28 03:13:55,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:55" (3/3) ... [2020-11-28 03:13:55,863 INFO L111 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-11-28 03:13:55,881 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:13:55,886 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:13:55,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:13:55,943 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:13:55,944 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:13:55,944 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:13:55,944 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:55,944 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:55,945 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:13:55,945 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:55,945 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:13:55,967 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-28 03:13:55,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:13:55,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:55,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:55,975 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:55,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:55,988 INFO L82 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2020-11-28 03:13:56,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:56,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592524806] [2020-11-28 03:13:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:56,217 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 03:13:56,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592524806] [2020-11-28 03:13:56,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:56,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:13:56,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21318935] [2020-11-28 03:13:56,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:13:56,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:56,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:13:56,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:13:56,249 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-28 03:13:56,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:56,272 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-11-28 03:13:56,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:13:56,273 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:13:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:56,286 INFO L225 Difference]: With dead ends: 37 [2020-11-28 03:13:56,286 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 03:13:56,301 INFO L677 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 [2020-11-28 03:13:56,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 03:13:56,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:13:56,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:13:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-28 03:13:56,351 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2020-11-28 03:13:56,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:56,352 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-28 03:13:56,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:13:56,352 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-11-28 03:13:56,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:13:56,354 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:56,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:56,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:13:56,355 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:56,359 INFO L82 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2020-11-28 03:13:56,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:56,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984793723] [2020-11-28 03:13:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:56,529 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 03:13:56,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984793723] [2020-11-28 03:13:56,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:56,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:13:56,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303743390] [2020-11-28 03:13:56,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:13:56,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:56,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:13:56,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:13:56,533 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2020-11-28 03:13:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:56,640 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-11-28 03:13:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:13:56,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:13:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:56,644 INFO L225 Difference]: With dead ends: 33 [2020-11-28 03:13:56,645 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 03:13:56,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:13:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 03:13:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-11-28 03:13:56,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:13:56,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-28 03:13:56,652 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2020-11-28 03:13:56,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:56,652 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-28 03:13:56,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:13:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-28 03:13:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:13:56,653 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:56,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:56,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:13:56,654 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:56,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:56,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2020-11-28 03:13:56,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:56,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605440857] [2020-11-28 03:13:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:13:56,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605440857] [2020-11-28 03:13:56,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:56,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:13:56,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481087713] [2020-11-28 03:13:56,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:13:56,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:56,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:13:56,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:56,845 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-11-28 03:13:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:56,962 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-11-28 03:13:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:13:56,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 03:13:56,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:56,964 INFO L225 Difference]: With dead ends: 27 [2020-11-28 03:13:56,964 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 03:13:56,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:13:56,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 03:13:56,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-28 03:13:56,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:13:56,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-28 03:13:56,971 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2020-11-28 03:13:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:56,972 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-28 03:13:56,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:13:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-28 03:13:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:13:56,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:56,974 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:56,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:13:56,974 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:56,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:56,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2020-11-28 03:13:56,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:56,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575236097] [2020-11-28 03:13:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:57,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:57,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575236097] [2020-11-28 03:13:57,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635534815] [2020-11-28 03:13:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:13:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:57,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:13:57,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:57,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:13:57,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-11-28 03:13:57,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078361828] [2020-11-28 03:13:57,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:13:57,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:57,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:13:57,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:13:57,378 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2020-11-28 03:13:57,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:57,578 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-11-28 03:13:57,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:13:57,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-11-28 03:13:57,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:57,581 INFO L225 Difference]: With dead ends: 43 [2020-11-28 03:13:57,581 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 03:13:57,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:13:57,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 03:13:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-11-28 03:13:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:13:57,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-11-28 03:13:57,590 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-11-28 03:13:57,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:57,590 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-11-28 03:13:57,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:13:57,591 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-11-28 03:13:57,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:13:57,593 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:57,594 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:57,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:13:57,795 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:57,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:57,796 INFO L82 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2020-11-28 03:13:57,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:57,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140784747] [2020-11-28 03:13:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:57,878 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:57,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:57,947 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:57,947 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:13:57,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:13:57,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:13:57 BoogieIcfgContainer [2020-11-28 03:13:57,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:13:57,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:58,006 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:58,006 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:58,006 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:55" (3/4) ... [2020-11-28 03:13:58,009 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:13:58,141 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_49b9439e-cfe4-448c-8992-d7dafac6fd16/bin/uautomizer/witness.graphml [2020-11-28 03:13:58,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:58,144 INFO L168 Benchmark]: Toolchain (without parser) took 3378.13 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 72.1 MB in the beginning and 109.1 MB in the end (delta: -37.0 MB). Peak memory consumption was 44.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:58,145 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 107.0 MB. Free memory was 77.9 MB in the beginning and 77.8 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:58,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.97 ms. Allocated memory is still 107.0 MB. Free memory was 71.9 MB in the beginning and 82.8 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:58,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.88 ms. Allocated memory is still 107.0 MB. Free memory was 82.8 MB in the beginning and 81.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:58,147 INFO L168 Benchmark]: Boogie Preprocessor took 31.25 ms. Allocated memory is still 107.0 MB. Free memory was 81.2 MB in the beginning and 80.2 MB in the end (delta: 993.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:58,160 INFO L168 Benchmark]: RCFGBuilder took 616.89 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 65.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:58,163 INFO L168 Benchmark]: TraceAbstraction took 2144.23 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 65.0 MB in the beginning and 55.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:58,163 INFO L168 Benchmark]: Witness Printer took 143.56 ms. Allocated memory is still 134.2 MB. Free memory was 55.7 MB in the beginning and 109.1 MB in the end (delta: -53.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:58,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 107.0 MB. Free memory was 77.9 MB in the beginning and 77.8 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 385.97 ms. Allocated memory is still 107.0 MB. Free memory was 71.9 MB in the beginning and 82.8 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.88 ms. Allocated memory is still 107.0 MB. Free memory was 82.8 MB in the beginning and 81.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.25 ms. Allocated memory is still 107.0 MB. Free memory was 81.2 MB in the beginning and 80.2 MB in the end (delta: 993.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 616.89 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 65.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2144.23 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 65.0 MB in the beginning and 55.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. * Witness Printer took 143.56 ms. Allocated memory is still 134.2 MB. Free memory was 55.7 MB in the beginning and 109.1 MB in the end (delta: -53.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=2] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [N=2] [L31] COND TRUE i