./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/condgf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/condgf.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/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 fc9306c2ddc48de21e392013ec7086bf0d234b29 ..................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-69874e2 [2020-12-01 15:22:24,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:22:24,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:22:24,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:22:24,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:22:24,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:22:24,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:22:24,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:22:24,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:22:24,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:22:24,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:22:24,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:22:24,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:22:24,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:22:24,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:22:24,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:22:24,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:22:24,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:22:24,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:22:24,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:22:24,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:22:24,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:22:24,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:22:24,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:22:24,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:22:24,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:22:24,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:22:24,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:22:24,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:22:24,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:22:24,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:22:24,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:22:24,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:22:24,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:22:24,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:22:24,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:22:24,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:22:24,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:22:24,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:22:24,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:22:24,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:22:24,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:22:24,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:22:24,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:22:24,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:22:24,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:22:24,714 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:22:24,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:22:24,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:22:24,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:22:24,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:22:24,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:22:24,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:22:24,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:22:24,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:22:24,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:22:24,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:22:24,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:22:24,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:22:24,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:22:24,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:22:24,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:22:24,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:22:24,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:22:24,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:22:24,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:22:24,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:22:24,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:22:24,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:22:24,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:22:24,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:22:24,720 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_0d243e9f-b2b2-473f-8ed0-a69caf556e05/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc9306c2ddc48de21e392013ec7086bf0d234b29 [2020-12-01 15:22:24,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:22:24,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:22:24,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:22:24,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:22:24,989 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:22:24,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/bin/uautomizer/../../sv-benchmarks/c/array-fpi/condgf.c [2020-12-01 15:22:25,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/bin/uautomizer/data/fc9196860/f47365b88b9d42deb8fd4aa0abc2949a/FLAGdb4ae2d45 [2020-12-01 15:22:25,503 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:22:25,503 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/sv-benchmarks/c/array-fpi/condgf.c [2020-12-01 15:22:25,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/bin/uautomizer/data/fc9196860/f47365b88b9d42deb8fd4aa0abc2949a/FLAGdb4ae2d45 [2020-12-01 15:22:25,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/bin/uautomizer/data/fc9196860/f47365b88b9d42deb8fd4aa0abc2949a [2020-12-01 15:22:25,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:22:25,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:22:25,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:22:25,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:22:25,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:22:25,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:22:25" (1/1) ... [2020-12-01 15:22:25,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63359538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:25, skipping insertion in model container [2020-12-01 15:22:25,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:22:25" (1/1) ... [2020-12-01 15:22:25,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:22:25,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:22:26,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:22:26,137 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:22:26,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:22:26,170 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:22:26,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:26 WrapperNode [2020-12-01 15:22:26,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:22:26,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:22:26,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:22:26,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:22:26,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:26" (1/1) ... [2020-12-01 15:22:26,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:26" (1/1) ... [2020-12-01 15:22:26,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:22:26,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:22:26,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:22:26,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:22:26,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:26" (1/1) ... [2020-12-01 15:22:26,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:26" (1/1) ... [2020-12-01 15:22:26,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:26" (1/1) ... [2020-12-01 15:22:26,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:26" (1/1) ... [2020-12-01 15:22:26,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:26" (1/1) ... [2020-12-01 15:22:26,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:26" (1/1) ... [2020-12-01 15:22:26,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:26" (1/1) ... [2020-12-01 15:22:26,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:22:26,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:22:26,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:22:26,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:22:26,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/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 [2020-12-01 15:22:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:22:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:22:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:22:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 15:22:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:22:26,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:22:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:22:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:22:26,690 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:22:26,691 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 15:22:26,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:22:26 BoogieIcfgContainer [2020-12-01 15:22:26,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:22:26,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:22:26,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:22:26,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:22:26,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:22:25" (1/3) ... [2020-12-01 15:22:26,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5855a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:22:26, skipping insertion in model container [2020-12-01 15:22:26,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:26" (2/3) ... [2020-12-01 15:22:26,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5855a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:22:26, skipping insertion in model container [2020-12-01 15:22:26,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:22:26" (3/3) ... [2020-12-01 15:22:26,714 INFO L111 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-12-01 15:22:26,739 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:22:26,743 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:22:26,754 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:22:26,778 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:22:26,778 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:22:26,779 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:22:26,779 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:22:26,779 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:22:26,779 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:22:26,779 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:22:26,780 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:22:26,792 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-12-01 15:22:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:22:26,812 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:22:26,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:22:26,813 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:22:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:26,819 INFO L82 PathProgramCache]: Analyzing trace with hash -592817118, now seen corresponding path program 1 times [2020-12-01 15:22:26,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:26,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983999727] [2020-12-01 15:22:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:22:26,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983999727] [2020-12-01 15:22:26,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:22:26,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:22:26,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742067525] [2020-12-01 15:22:26,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:22:26,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:22:27,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:22:27,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:22:27,018 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-12-01 15:22:27,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:22:27,031 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2020-12-01 15:22:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:22:27,033 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-01 15:22:27,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:22:27,041 INFO L225 Difference]: With dead ends: 47 [2020-12-01 15:22:27,041 INFO L226 Difference]: Without dead ends: 21 [2020-12-01 15:22:27,044 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 [2020-12-01 15:22:27,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-01 15:22:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-01 15:22:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-01 15:22:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-12-01 15:22:27,078 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-12-01 15:22:27,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:22:27,078 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-12-01 15:22:27,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:22:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-12-01 15:22:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:22:27,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:22:27,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:22:27,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:22:27,080 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:22:27,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:27,082 INFO L82 PathProgramCache]: Analyzing trace with hash 108247460, now seen corresponding path program 1 times [2020-12-01 15:22:27,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:27,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727742742] [2020-12-01 15:22:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:22:27,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727742742] [2020-12-01 15:22:27,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:22:27,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:22:27,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096323435] [2020-12-01 15:22:27,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:22:27,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:22:27,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:22:27,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:22:27,196 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 4 states. [2020-12-01 15:22:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:22:27,287 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2020-12-01 15:22:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:22:27,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-01 15:22:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:22:27,290 INFO L225 Difference]: With dead ends: 48 [2020-12-01 15:22:27,291 INFO L226 Difference]: Without dead ends: 34 [2020-12-01 15:22:27,293 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 [2020-12-01 15:22:27,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-01 15:22:27,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2020-12-01 15:22:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-01 15:22:27,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-12-01 15:22:27,302 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2020-12-01 15:22:27,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:22:27,302 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-12-01 15:22:27,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:22:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-12-01 15:22:27,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:22:27,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:22:27,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:22:27,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:22:27,304 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:22:27,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:27,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1242970242, now seen corresponding path program 1 times [2020-12-01 15:22:27,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:27,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198038701] [2020-12-01 15:22:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:22:27,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198038701] [2020-12-01 15:22:27,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792541024] [2020-12-01 15:22:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/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 [2020-12-01 15:22:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:27,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-01 15:22:27,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:22:28,009 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-01 15:22:28,017 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:22:28,030 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:22:28,039 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 15:22:28,040 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 15:22:28,055 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:22:28,058 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:22:28,059 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-12-01 15:22:28,112 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-01 15:22:28,121 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:22:28,128 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:22:28,134 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:22:28,135 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2020-12-01 15:22:28,321 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-12-01 15:22:28,324 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:22:28,332 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:22:28,335 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-01 15:22:28,336 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:22 [2020-12-01 15:22:28,461 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-12-01 15:22:28,464 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:22:28,470 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:22:28,475 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:22:28,475 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:29, output treesize:7 [2020-12-01 15:22:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:22:28,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:22:28,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2020-12-01 15:22:28,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064050335] [2020-12-01 15:22:28,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-01 15:22:28,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:22:28,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-01 15:22:28,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-12-01 15:22:28,534 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 18 states. [2020-12-01 15:22:29,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:22:29,397 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2020-12-01 15:22:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 15:22:29,398 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-12-01 15:22:29,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:22:29,400 INFO L225 Difference]: With dead ends: 61 [2020-12-01 15:22:29,400 INFO L226 Difference]: Without dead ends: 51 [2020-12-01 15:22:29,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2020-12-01 15:22:29,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-01 15:22:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2020-12-01 15:22:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 15:22:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-12-01 15:22:29,415 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 21 [2020-12-01 15:22:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:22:29,415 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-12-01 15:22:29,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-01 15:22:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-12-01 15:22:29,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:22:29,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:22:29,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:22:29,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-01 15:22:29,635 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:22:29,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:29,636 INFO L82 PathProgramCache]: Analyzing trace with hash 532037120, now seen corresponding path program 1 times [2020-12-01 15:22:29,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:29,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46158473] [2020-12-01 15:22:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:29,674 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:29,715 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:29,737 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:22:29,737 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:22:29,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:22:29,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:22:29 BoogieIcfgContainer [2020-12-01 15:22:29,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:22:29,775 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:22:29,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:22:29,775 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:22:29,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:22:26" (3/4) ... [2020-12-01 15:22:29,777 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 15:22:29,861 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0d243e9f-b2b2-473f-8ed0-a69caf556e05/bin/uautomizer/witness.graphml [2020-12-01 15:22:29,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:22:29,866 INFO L168 Benchmark]: Toolchain (without parser) took 3977.25 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 61.5 MB in the beginning and 100.7 MB in the end (delta: -39.2 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:29,867 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:22:29,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.16 ms. Allocated memory is still 92.3 MB. Free memory was 61.3 MB in the beginning and 68.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:29,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.05 ms. Allocated memory is still 92.3 MB. Free memory was 68.9 MB in the beginning and 67.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:29,872 INFO L168 Benchmark]: Boogie Preprocessor took 26.82 ms. Allocated memory is still 92.3 MB. Free memory was 67.3 MB in the beginning and 66.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:29,873 INFO L168 Benchmark]: RCFGBuilder took 455.52 ms. Allocated memory is still 92.3 MB. Free memory was 66.0 MB in the beginning and 50.2 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:29,874 INFO L168 Benchmark]: TraceAbstraction took 3080.08 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 49.8 MB in the beginning and 102.8 MB in the end (delta: -53.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:22:29,876 INFO L168 Benchmark]: Witness Printer took 90.22 ms. Allocated memory is still 134.2 MB. Free memory was 102.8 MB in the beginning and 100.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:29,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.16 ms. Allocated memory is still 92.3 MB. Free memory was 61.3 MB in the beginning and 68.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.05 ms. Allocated memory is still 92.3 MB. Free memory was 68.9 MB in the beginning and 67.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.82 ms. Allocated memory is still 92.3 MB. Free memory was 67.3 MB in the beginning and 66.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 455.52 ms. Allocated memory is still 92.3 MB. Free memory was 66.0 MB in the beginning and 50.2 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3080.08 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 49.8 MB in the beginning and 102.8 MB in the end (delta: -53.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 90.22 ms. Allocated memory is still 134.2 MB. Free memory was 102.8 MB in the beginning and 100.7 MB in the end (delta: 2.1 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=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i