./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ab443682b8ebd5ebec1293e1098a08dcb4fa4fdb .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ab443682b8ebd5ebec1293e1098a08dcb4fa4fdb ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:02:58,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:02:58,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:02:58,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:02:58,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:02:58,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:02:58,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:02:58,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:02:58,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:02:58,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:02:58,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:02:58,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:02:58,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:02:58,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:02:58,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:02:58,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:02:58,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:02:58,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:02:58,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:02:58,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:02:58,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:02:58,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:02:58,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:02:58,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:02:58,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:02:58,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:02:58,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:02:58,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:02:58,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:02:58,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:02:58,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:02:58,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:02:58,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:02:58,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:02:58,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:02:58,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:02:58,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:02:58,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:02:58,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:02:58,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:02:58,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:02:58,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:02:58,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:02:58,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:02:58,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:02:58,473 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:02:58,473 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:02:58,473 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:02:58,473 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:02:58,473 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:02:58,473 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:02:58,473 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:02:58,473 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:02:58,474 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:02:58,474 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:02:58,474 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:02:58,474 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:02:58,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:02:58,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:02:58,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:02:58,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:02:58,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:02:58,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:02:58,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:02:58,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:02:58,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:02:58,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:02:58,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:02:58,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:02:58,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:02:58,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:02:58,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:02:58,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:02:58,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:02:58,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:02:58,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:02:58,477 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:02:58,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:02:58,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:02:58,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:02:58,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:02:58,478 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab443682b8ebd5ebec1293e1098a08dcb4fa4fdb [2020-12-09 08:02:58,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:02:58,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:02:58,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:02:58,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:02:58,687 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:02:58,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifeqn4.c [2020-12-09 08:02:58,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/data/c4330a872/958d38cb88834c28920b3c59afd8e8ea/FLAGb00bb4cbd [2020-12-09 08:02:59,103 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:02:59,104 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/sv-benchmarks/c/array-fpi/ifeqn4.c [2020-12-09 08:02:59,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/data/c4330a872/958d38cb88834c28920b3c59afd8e8ea/FLAGb00bb4cbd [2020-12-09 08:02:59,517 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/data/c4330a872/958d38cb88834c28920b3c59afd8e8ea [2020-12-09 08:02:59,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:02:59,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:02:59,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:02:59,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:02:59,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:02:59,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:02:59" (1/1) ... [2020-12-09 08:02:59,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ffc127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59, skipping insertion in model container [2020-12-09 08:02:59,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:02:59" (1/1) ... [2020-12-09 08:02:59,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:02:59,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:02:59,633 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/sv-benchmarks/c/array-fpi/ifeqn4.c[589,602] [2020-12-09 08:02:59,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:02:59,651 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:02:59,659 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/sv-benchmarks/c/array-fpi/ifeqn4.c[589,602] [2020-12-09 08:02:59,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:02:59,675 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:02:59,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59 WrapperNode [2020-12-09 08:02:59,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:02:59,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:02:59,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:02:59,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:02:59,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59" (1/1) ... [2020-12-09 08:02:59,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59" (1/1) ... [2020-12-09 08:02:59,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:02:59,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:02:59,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:02:59,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:02:59,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59" (1/1) ... [2020-12-09 08:02:59,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59" (1/1) ... [2020-12-09 08:02:59,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59" (1/1) ... [2020-12-09 08:02:59,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59" (1/1) ... [2020-12-09 08:02:59,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59" (1/1) ... [2020-12-09 08:02:59,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59" (1/1) ... [2020-12-09 08:02:59,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59" (1/1) ... [2020-12-09 08:02:59,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:02:59,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:02:59,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:02:59,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:02:59,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/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 [2020-12-09 08:02:59,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:02:59,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:02:59,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 08:02:59,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 08:02:59,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:02:59,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:02:59,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 08:03:00,137 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:03:00,137 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-09 08:03:00,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:03:00 BoogieIcfgContainer [2020-12-09 08:03:00,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:03:00,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:03:00,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:03:00,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:03:00,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:02:59" (1/3) ... [2020-12-09 08:03:00,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b049a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:03:00, skipping insertion in model container [2020-12-09 08:03:00,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:02:59" (2/3) ... [2020-12-09 08:03:00,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b049a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:03:00, skipping insertion in model container [2020-12-09 08:03:00,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:03:00" (3/3) ... [2020-12-09 08:03:00,145 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn4.c [2020-12-09 08:03:00,154 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:03:00,157 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 08:03:00,164 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 08:03:00,184 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:03:00,184 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:03:00,184 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:03:00,184 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:03:00,185 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:03:00,185 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:03:00,185 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:03:00,185 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:03:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 08:03:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 08:03:00,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:03:00,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:03:00,200 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:03:00,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:03:00,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1758921741, now seen corresponding path program 1 times [2020-12-09 08:03:00,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:03:00,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211989933] [2020-12-09 08:03:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:03:00,292 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:03:00,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010927436] [2020-12-09 08:03:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/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 [2020-12-09 08:03:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:03:00,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:03:00,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:03:00,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:03:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:03:00,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211989933] [2020-12-09 08:03:00,424 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:03:00,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010927436] [2020-12-09 08:03:00,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:03:00,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 08:03:00,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325920113] [2020-12-09 08:03:00,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:03:00,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:03:00,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:03:00,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:03:00,442 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-12-09 08:03:00,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:03:00,480 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2020-12-09 08:03:00,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:03:00,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 08:03:00,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:03:00,487 INFO L225 Difference]: With dead ends: 20 [2020-12-09 08:03:00,487 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 08:03:00,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:03:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 08:03:00,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-09 08:03:00,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 08:03:00,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-12-09 08:03:00,510 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2020-12-09 08:03:00,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:03:00,510 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-12-09 08:03:00,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:03:00,511 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-12-09 08:03:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:03:00,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:03:00,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:03:00,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 08:03:00,712 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:03:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:03:00,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1256161657, now seen corresponding path program 1 times [2020-12-09 08:03:00,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:03:00,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370690614] [2020-12-09 08:03:00,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:03:00,771 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:03:00,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387892075] [2020-12-09 08:03:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:03:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:03:00,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:03:00,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 08:03:00,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:03:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 08:03:01,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370690614] [2020-12-09 08:03:01,002 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:03:01,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387892075] [2020-12-09 08:03:01,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:03:01,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-09 08:03:01,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147049680] [2020-12-09 08:03:01,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:03:01,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:03:01,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:03:01,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:03:01,007 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 5 states. [2020-12-09 08:03:01,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:03:01,055 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-12-09 08:03:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:03:01,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 08:03:01,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:03:01,056 INFO L225 Difference]: With dead ends: 21 [2020-12-09 08:03:01,056 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 08:03:01,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:03:01,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 08:03:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2020-12-09 08:03:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 08:03:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-12-09 08:03:01,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2020-12-09 08:03:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:03:01,060 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-12-09 08:03:01,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:03:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-12-09 08:03:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 08:03:01,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:03:01,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:03:01,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:03:01,261 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:03:01,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:03:01,261 INFO L82 PathProgramCache]: Analyzing trace with hash 285260138, now seen corresponding path program 1 times [2020-12-09 08:03:01,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:03:01,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379717191] [2020-12-09 08:03:01,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:03:01,285 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:03:01,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463540080] [2020-12-09 08:03:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:03:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:03:01,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-09 08:03:01,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:01,373 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2020-12-09 08:03:01,374 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:03:01,376 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:03:01,376 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:03:01,376 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-09 08:03:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:03:01,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:03:01,414 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 08:03:01,414 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:03:01,456 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:03:01,457 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:03:01,458 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:03:01,465 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:03:01,494 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:03:01,495 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 47 [2020-12-09 08:03:01,496 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:03:01,500 INFO L443 ElimStorePlain]: Different costs {0=[v_arrayElimCell_2], 2=[v_arrayElimCell_1]} [2020-12-09 08:03:01,519 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse13 (mod (+ c_ULTIMATE.start_main_~i~0 4294967295) 4294967296)) (.cse14 (mod c_ULTIMATE.start_main_~i~0 4294967296))) (let ((.cse1 (<= .cse14 2147483647)) (.cse7 (<= .cse13 2147483647)) (.cse0 (= c_ULTIMATE.start_main_~i~0 0)) (.cse10 (< 2147483647 .cse14)) (.cse2 (< 2147483647 .cse13))) (and (or .cse0 .cse1 .cse2 (forall ((v_prenex_6 Int) (v_prenex_7 Int) (v_prenex_10 Int) (v_prenex_8 (Array Int (Array Int Int))) (v_prenex_9 Int)) (= (select (let ((.cse3 (select v_prenex_8 v_prenex_6))) (store .cse3 (+ (* (mod c_ULTIMATE.start_main_~i~0 4294967296) 8) v_prenex_10 (- 34359738368)) (let ((.cse4 (* (mod (+ c_ULTIMATE.start_main_~i~0 4294967295) 4294967296) 8))) (+ (select (select v_prenex_8 v_prenex_7) (+ .cse4 v_prenex_9)) (select .cse3 (+ .cse4 v_prenex_10)))))) v_prenex_10) 1))) (or .cse0 .cse1 (forall ((v_prenex_15 Int) (v_prenex_12 Int) (v_prenex_13 (Array Int (Array Int Int))) (v_prenex_11 Int) (v_prenex_14 Int)) (= (select (let ((.cse5 (select v_prenex_13 v_prenex_11))) (store .cse5 (+ (* (mod c_ULTIMATE.start_main_~i~0 4294967296) 8) v_prenex_15 (- 34359738368)) (let ((.cse6 (* (mod (+ c_ULTIMATE.start_main_~i~0 4294967295) 4294967296) 8))) (+ (select .cse5 (+ v_prenex_15 .cse6 (- 34359738368))) (select (select v_prenex_13 v_prenex_12) (+ v_prenex_14 .cse6 (- 34359738368))))))) v_prenex_15) 1)) .cse7) (or .cse0 (forall ((ULTIMATE.start_main_~b~0.base Int) (ULTIMATE.start_main_~a~0.base Int) (|#memory_int| (Array Int (Array Int Int))) (ULTIMATE.start_main_~a~0.offset Int) (ULTIMATE.start_main_~b~0.offset Int)) (= (select (let ((.cse8 (select |#memory_int| ULTIMATE.start_main_~b~0.base))) (store .cse8 (+ (* (mod c_ULTIMATE.start_main_~i~0 4294967296) 8) ULTIMATE.start_main_~b~0.offset) (let ((.cse9 (* (mod (+ c_ULTIMATE.start_main_~i~0 4294967295) 4294967296) 8))) (+ (select .cse8 (+ .cse9 ULTIMATE.start_main_~b~0.offset (- 34359738368))) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset .cse9 (- 34359738368))))))) ULTIMATE.start_main_~b~0.offset) 1)) .cse10 .cse7) (or (forall ((v_prenex_4 Int) (v_prenex_5 Int) (v_prenex_2 Int) (v_prenex_3 (Array Int (Array Int Int))) (v_prenex_1 Int)) (= (select (let ((.cse11 (select v_prenex_3 v_prenex_1))) (store .cse11 (+ (* (mod c_ULTIMATE.start_main_~i~0 4294967296) 8) v_prenex_5) (let ((.cse12 (* (mod (+ c_ULTIMATE.start_main_~i~0 4294967295) 4294967296) 8))) (+ (select (select v_prenex_3 v_prenex_2) (+ v_prenex_4 .cse12)) (select .cse11 (+ v_prenex_5 .cse12)))))) v_prenex_5) 1)) .cse0 .cse10 .cse2)))) is different from false [2020-12-09 08:03:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2020-12-09 08:03:01,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379717191] [2020-12-09 08:03:01,531 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:03:01,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463540080] [2020-12-09 08:03:01,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1068091380] [2020-12-09 08:03:01,547 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 08:03:01,547 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:03:01,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:03:01,555 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:03:01,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:03:01,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,053 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,177 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,231 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,443 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,462 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,478 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,556 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,609 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,630 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,774 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,797 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,861 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:02,883 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:03:03,011 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-12-09 08:03:03,143 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-09 08:03:03,276 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-09 08:03:03,511 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:03:03,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 08:03:03,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2020-12-09 08:03:03,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150997069] [2020-12-09 08:03:03,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 08:03:03,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:03:03,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 08:03:03,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=163, Unknown=1, NotChecked=26, Total=240 [2020-12-09 08:03:03,513 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 11 states. [2020-12-09 08:03:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:03:03,767 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-12-09 08:03:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 08:03:03,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 9 [2020-12-09 08:03:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:03:03,769 INFO L225 Difference]: With dead ends: 39 [2020-12-09 08:03:03,769 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 08:03:03,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=432, Unknown=1, NotChecked=44, Total=600 [2020-12-09 08:03:03,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 08:03:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 14. [2020-12-09 08:03:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 08:03:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-12-09 08:03:03,773 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2020-12-09 08:03:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:03:03,773 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-12-09 08:03:03,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 08:03:03,773 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-12-09 08:03:03,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 08:03:03,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:03:03,773 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:03:03,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:03:03,975 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:03:03,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:03:03,977 INFO L82 PathProgramCache]: Analyzing trace with hash 252084121, now seen corresponding path program 2 times [2020-12-09 08:03:03,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:03:03,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250315550] [2020-12-09 08:03:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:03:04,049 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:03:04,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596040768] [2020-12-09 08:03:04,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:03:04,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-09 08:03:04,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 08:03:04,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 08:03:04,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:03:04,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:03:04,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:03:04,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250315550] [2020-12-09 08:03:04,164 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:03:04,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596040768] [2020-12-09 08:03:04,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1529923262] [2020-12-09 08:03:04,166 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 08:03:04,166 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:03:04,166 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:03:04,167 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:03:04,167 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:03:04,213 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,429 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,473 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,484 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,495 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,635 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,675 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,688 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,748 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,781 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,788 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,794 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,894 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,916 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 08:03:04,982 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:03:05,431 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:03:05,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 08:03:05,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-09 08:03:05,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679556433] [2020-12-09 08:03:05,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 08:03:05,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:03:05,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 08:03:05,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-12-09 08:03:05,432 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 8 states. [2020-12-09 08:03:05,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:03:05,499 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-12-09 08:03:05,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:03:05,499 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-12-09 08:03:05,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:03:05,500 INFO L225 Difference]: With dead ends: 35 [2020-12-09 08:03:05,500 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 08:03:05,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-12-09 08:03:05,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 08:03:05,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 13. [2020-12-09 08:03:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 08:03:05,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-12-09 08:03:05,502 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2020-12-09 08:03:05,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:03:05,503 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-12-09 08:03:05,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 08:03:05,503 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-09 08:03:05,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 08:03:05,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:03:05,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:03:05,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:03:05,705 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:03:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:03:05,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1950532691, now seen corresponding path program 3 times [2020-12-09 08:03:05,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:03:05,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094034901] [2020-12-09 08:03:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:03:05,772 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:03:05,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326692562] [2020-12-09 08:03:05,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:03:05,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 08:03:05,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 08:03:05,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-09 08:03:05,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 08:03:06,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:03:06,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094034901] [2020-12-09 08:03:06,201 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:03:06,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326692562] [2020-12-09 08:03:06,201 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: incompatible size [2020-12-09 08:03:06,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [105199842] [2020-12-09 08:03:06,203 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 08:03:06,203 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:03:06,203 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:03:06,203 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:03:06,203 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:03:06,210 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3692e345 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:568) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:441) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:239) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:153) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 08:03:06,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:03:06,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 08:03:06,211 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 08:03:06,211 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 08:03:06,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:03:06,426 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 08:03:06,426 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 08:03:06,427 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 08:03:06,427 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 08:03:06,427 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 08:03:06,427 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 08:03:06,428 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 08:03:06,428 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 08:03:06,428 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 08:03:06,428 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 08:03:06,429 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 08:03:06,429 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 08:03:06,430 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 08:03:06,430 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 08:03:06,456 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 08:03:06,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:03:06 BoogieIcfgContainer [2020-12-09 08:03:06,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:03:06,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:03:06,459 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:03:06,459 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:03:06,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:03:00" (3/4) ... [2020-12-09 08:03:06,467 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 08:03:06,468 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:03:06,470 INFO L168 Benchmark]: Toolchain (without parser) took 6948.59 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 56.1 MB in the beginning and 94.2 MB in the end (delta: -38.2 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2020-12-09 08:03:06,471 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 96.5 MB. Free memory is still 72.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:03:06,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.15 ms. Allocated memory is still 96.5 MB. Free memory was 55.9 MB in the beginning and 69.8 MB in the end (delta: -13.9 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:03:06,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.21 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 68.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:03:06,476 INFO L168 Benchmark]: Boogie Preprocessor took 22.66 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 67.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:03:06,477 INFO L168 Benchmark]: RCFGBuilder took 414.87 ms. Allocated memory is still 96.5 MB. Free memory was 67.0 MB in the beginning and 55.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:03:06,479 INFO L168 Benchmark]: TraceAbstraction took 6317.96 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 54.7 MB in the beginning and 94.2 MB in the end (delta: -39.6 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2020-12-09 08:03:06,481 INFO L168 Benchmark]: Witness Printer took 9.11 ms. Allocated memory is still 172.0 MB. Free memory is still 94.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:03:06,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 96.5 MB. Free memory is still 72.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 154.15 ms. Allocated memory is still 96.5 MB. Free memory was 55.9 MB in the beginning and 69.8 MB in the end (delta: -13.9 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 24.21 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 68.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.66 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 67.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 414.87 ms. Allocated memory is still 96.5 MB. Free memory was 67.0 MB in the beginning and 55.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6317.96 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 54.7 MB in the beginning and 94.2 MB in the end (delta: -39.6 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. * Witness Printer took 9.11 ms. Allocated memory is still 172.0 MB. Free memory is still 94.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND TRUE !cond [L27] long long i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 [L31] COND TRUE i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan 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 -> Taipan 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 -> ab443682b8ebd5ebec1293e1098a08dcb4fa4fdb [2020-12-09 08:03:08,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:03:08,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:03:08,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:03:08,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:03:08,408 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:03:08,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifeqn4.c [2020-12-09 08:03:08,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/data/22111a173/1b911de84fd04c7e917e7147a67ced38/FLAGe28a024f4 [2020-12-09 08:03:08,853 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:03:08,854 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/sv-benchmarks/c/array-fpi/ifeqn4.c [2020-12-09 08:03:08,861 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/data/22111a173/1b911de84fd04c7e917e7147a67ced38/FLAGe28a024f4 [2020-12-09 08:03:08,874 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/data/22111a173/1b911de84fd04c7e917e7147a67ced38 [2020-12-09 08:03:08,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:03:08,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:03:08,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:03:08,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:03:08,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:03:08,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:03:08" (1/1) ... [2020-12-09 08:03:08,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618fca62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:08, skipping insertion in model container [2020-12-09 08:03:08,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:03:08" (1/1) ... [2020-12-09 08:03:08,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:03:08,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:03:09,008 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/sv-benchmarks/c/array-fpi/ifeqn4.c[589,602] [2020-12-09 08:03:09,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:03:09,033 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:03:09,042 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/sv-benchmarks/c/array-fpi/ifeqn4.c[589,602] [2020-12-09 08:03:09,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:03:09,060 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:03:09,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:09 WrapperNode [2020-12-09 08:03:09,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:03:09,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:03:09,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:03:09,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:03:09,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:09" (1/1) ... [2020-12-09 08:03:09,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:09" (1/1) ... [2020-12-09 08:03:09,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:03:09,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:03:09,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:03:09,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:03:09,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:09" (1/1) ... [2020-12-09 08:03:09,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:09" (1/1) ... [2020-12-09 08:03:09,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:09" (1/1) ... [2020-12-09 08:03:09,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:09" (1/1) ... [2020-12-09 08:03:09,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:09" (1/1) ... [2020-12-09 08:03:09,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:09" (1/1) ... [2020-12-09 08:03:09,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:09" (1/1) ... [2020-12-09 08:03:09,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:03:09,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:03:09,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:03:09,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:03:09,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/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 [2020-12-09 08:03:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 08:03:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:03:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2020-12-09 08:03:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 08:03:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:03:09,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:03:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2020-12-09 08:03:09,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:03:09,470 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-09 08:03:09,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:03:09 BoogieIcfgContainer [2020-12-09 08:03:09,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:03:09,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:03:09,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:03:09,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:03:09,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:03:08" (1/3) ... [2020-12-09 08:03:09,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330f5829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:03:09, skipping insertion in model container [2020-12-09 08:03:09,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:03:09" (2/3) ... [2020-12-09 08:03:09,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330f5829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:03:09, skipping insertion in model container [2020-12-09 08:03:09,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:03:09" (3/3) ... [2020-12-09 08:03:09,486 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn4.c [2020-12-09 08:03:09,498 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:03:09,500 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 08:03:09,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 08:03:09,526 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:03:09,526 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:03:09,526 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:03:09,526 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:03:09,527 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:03:09,527 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:03:09,527 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:03:09,527 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:03:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-09 08:03:09,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 08:03:09,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:03:09,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:03:09,541 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:03:09,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:03:09,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2020-12-09 08:03:09,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:03:09,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416504751] [2020-12-09 08:03:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 08:03:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:03:09,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 08:03:09,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:03:09,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:03:09,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416504751] [2020-12-09 08:03:09,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:03:09,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:03:09,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839201987] [2020-12-09 08:03:09,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 08:03:09,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:03:09,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 08:03:09,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:03:09,708 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-12-09 08:03:09,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:03:09,719 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2020-12-09 08:03:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 08:03:09,720 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-09 08:03:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:03:09,726 INFO L225 Difference]: With dead ends: 42 [2020-12-09 08:03:09,726 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 08:03:09,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:03:09,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 08:03:09,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-09 08:03:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 08:03:09,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-12-09 08:03:09,751 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-12-09 08:03:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:03:09,752 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-12-09 08:03:09,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 08:03:09,752 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-12-09 08:03:09,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 08:03:09,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:03:09,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:03:09,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 08:03:09,953 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:03:09,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:03:09,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2020-12-09 08:03:09,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:03:09,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11170286] [2020-12-09 08:03:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 08:03:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:03:10,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 08:03:10,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:03:10,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:03:10,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11170286] [2020-12-09 08:03:10,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:03:10,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:03:10,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056094021] [2020-12-09 08:03:10,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:03:10,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:03:10,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:03:10,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:03:10,165 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 5 states. [2020-12-09 08:03:10,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:03:10,396 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2020-12-09 08:03:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:03:10,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 08:03:10,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:03:10,403 INFO L225 Difference]: With dead ends: 45 [2020-12-09 08:03:10,403 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 08:03:10,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:03:10,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 08:03:10,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-12-09 08:03:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 08:03:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-09 08:03:10,408 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-12-09 08:03:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:03:10,408 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-09 08:03:10,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:03:10,408 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-09 08:03:10,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 08:03:10,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:03:10,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:03:10,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 08:03:10,611 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:03:10,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:03:10,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2020-12-09 08:03:10,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:03:10,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790849771] [2020-12-09 08:03:10,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 08:03:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:03:10,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 08:03:10,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:10,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:10,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:10,825 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2020-12-09 08:03:10,826 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:03:10,840 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:03:10,840 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:03:10,841 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:24 [2020-12-09 08:03:10,898 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 08:03:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 08:03:10,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:03:10,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790849771] [2020-12-09 08:03:10,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:03:10,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:03:10,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081339744] [2020-12-09 08:03:10,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:03:10,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:03:10,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:03:10,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:03:10,922 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2020-12-09 08:03:11,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:03:11,196 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-12-09 08:03:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 08:03:11,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-09 08:03:11,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:03:11,197 INFO L225 Difference]: With dead ends: 40 [2020-12-09 08:03:11,197 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 08:03:11,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:03:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 08:03:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-09 08:03:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 08:03:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-12-09 08:03:11,202 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-12-09 08:03:11,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:03:11,203 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-12-09 08:03:11,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:03:11,203 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-12-09 08:03:11,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 08:03:11,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:03:11,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:03:11,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 08:03:11,405 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:03:11,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:03:11,407 INFO L82 PathProgramCache]: Analyzing trace with hash 259417010, now seen corresponding path program 1 times [2020-12-09 08:03:11,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:03:11,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561982887] [2020-12-09 08:03:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 08:03:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:03:11,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 08:03:11,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:03:11,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:03:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:03:11,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561982887] [2020-12-09 08:03:11,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1466674803] [2020-12-09 08:03:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt [2020-12-09 08:03:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:03:12,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 08:03:12,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:03:12,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:03:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:03:12,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:03:12,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 7, 8] total 18 [2020-12-09 08:03:12,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665256463] [2020-12-09 08:03:12,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 08:03:12,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:03:12,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 08:03:12,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-12-09 08:03:12,223 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 8 states. [2020-12-09 08:03:12,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:03:12,796 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-12-09 08:03:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 08:03:12,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-09 08:03:12,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:03:12,802 INFO L225 Difference]: With dead ends: 60 [2020-12-09 08:03:12,802 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 08:03:12,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-12-09 08:03:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 08:03:12,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-12-09 08:03:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 08:03:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-12-09 08:03:12,808 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2020-12-09 08:03:12,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:03:12,808 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-12-09 08:03:12,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 08:03:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-12-09 08:03:12,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 08:03:12,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:03:12,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:03:13,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt [2020-12-09 08:03:13,211 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:03:13,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:03:13,213 INFO L82 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times [2020-12-09 08:03:13,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:03:13,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002044978] [2020-12-09 08:03:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 08:03:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:03:13,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 08:03:13,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:13,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,416 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2020-12-09 08:03:13,417 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:03:13,430 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:03:13,431 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:03:13,431 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:31 [2020-12-09 08:03:13,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,505 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 08:03:13,506 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 08:03:13,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:03:13,508 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 08:03:13,509 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 08:03:13,546 INFO L348 Elim1Store]: treesize reduction 16, result has 59.0 percent of original size [2020-12-09 08:03:13,546 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 184 treesize of output 165 [2020-12-09 08:03:13,552 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:03:13,612 INFO L625 ElimStorePlain]: treesize reduction 107, result has 60.1 percent of original size [2020-12-09 08:03:13,614 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 08:03:13,615 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:187, output treesize:161 [2020-12-09 08:03:13,743 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 08:03:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 08:03:13,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:03:19,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002044978] [2020-12-09 08:03:19,360 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: incompatible size [2020-12-09 08:03:19,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [66333865] [2020-12-09 08:03:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt [2020-12-09 08:03:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:03:19,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 08:03:19,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:19,569 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4dd4d6c1 [2020-12-09 08:03:19,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464919884] [2020-12-09 08:03:19,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d44e7e-cf7e-48e3-837e-6b3cea8a8ece/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:03:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:03:19,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 08:03:19,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:03:19,677 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4dd4d6c1 [2020-12-09 08:03:19,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:03:19,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 08:03:19,677 ERROR L205 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2020-12-09 08:03:19,677 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 08:03:20,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt [2020-12-09 08:03:20,299 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 08:03:20,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:03:20 BoogieIcfgContainer [2020-12-09 08:03:20,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:03:20,299 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:03:20,299 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:03:20,300 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:03:20,300 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:03:09" (3/4) ... [2020-12-09 08:03:20,302 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 08:03:20,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:03:20,303 INFO L168 Benchmark]: Toolchain (without parser) took 11424.80 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 48.5 MB in the beginning and 24.0 MB in the end (delta: 24.5 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2020-12-09 08:03:20,303 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 65.0 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:03:20,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.19 ms. Allocated memory is still 65.0 MB. Free memory was 48.1 MB in the beginning and 37.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:03:20,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.72 ms. Allocated memory is still 65.0 MB. Free memory was 37.1 MB in the beginning and 49.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:03:20,305 INFO L168 Benchmark]: Boogie Preprocessor took 28.02 ms. Allocated memory is still 65.0 MB. Free memory was 48.8 MB in the beginning and 47.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:03:20,305 INFO L168 Benchmark]: RCFGBuilder took 343.74 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 47.3 MB in the beginning and 71.2 MB in the end (delta: -23.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:03:20,306 INFO L168 Benchmark]: TraceAbstraction took 10818.84 ms. Allocated memory is still 88.1 MB. Free memory was 70.7 MB in the beginning and 24.8 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2020-12-09 08:03:20,306 INFO L168 Benchmark]: Witness Printer took 2.60 ms. Allocated memory is still 88.1 MB. Free memory was 24.8 MB in the beginning and 24.0 MB in the end (delta: 897.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:03:20,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 65.0 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 182.19 ms. Allocated memory is still 65.0 MB. Free memory was 48.1 MB in the beginning and 37.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.72 ms. Allocated memory is still 65.0 MB. Free memory was 37.1 MB in the beginning and 49.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.02 ms. Allocated memory is still 65.0 MB. Free memory was 48.8 MB in the beginning and 47.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 343.74 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 47.3 MB in the beginning and 71.2 MB in the end (delta: -23.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10818.84 ms. Allocated memory is still 88.1 MB. Free memory was 70.7 MB in the beginning and 24.8 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. * Witness Printer took 2.60 ms. Allocated memory is still 88.1 MB. Free memory was 24.8 MB in the beginning and 24.0 MB in the end (delta: 897.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] long long i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 [L31] COND TRUE i