./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/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 2078f73240fa6cada48e366db3f43ef0ebe005c4 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:16,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:16,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:16,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:16,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:16,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:16,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:16,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:16,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:16,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:16,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:16,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:16,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:16,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:16,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:16,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:16,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:16,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:16,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:16,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:16,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:16,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:16,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:16,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:16,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:16,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:16,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:16,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:16,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:16,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:16,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:16,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:16,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:16,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:16,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:16,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:16,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:16,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:16,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:16,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:16,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:16,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:16,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:16,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:16,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:16,661 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:16,661 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:16,661 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:16,662 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:16,662 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:16,662 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:16,662 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:16,663 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:16,663 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:16,664 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:16,664 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:16,664 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:16,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:16,665 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:16,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:16,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:16,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:16,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:16,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:16,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:16,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:16,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:16,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:16,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:16,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:16,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:16,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:16,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:16,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:16,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:16,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:16,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:16,669 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:16,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:16,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:16,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:16,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:16,670 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_6838b2c9-9152-4724-a3b1-6710adb33f60/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2078f73240fa6cada48e366db3f43ef0ebe005c4 [2020-11-22 13:05:16,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:16,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:16,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:16,950 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:16,951 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:16,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c [2020-11-22 13:05:17,043 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/bin/utaipan/data/b8df752ac/f7d689d68cc84b2e97ecd279e916f16d/FLAGb4efad9dc [2020-11-22 13:05:17,492 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:17,492 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c [2020-11-22 13:05:17,499 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/bin/utaipan/data/b8df752ac/f7d689d68cc84b2e97ecd279e916f16d/FLAGb4efad9dc [2020-11-22 13:05:17,856 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/bin/utaipan/data/b8df752ac/f7d689d68cc84b2e97ecd279e916f16d [2020-11-22 13:05:17,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:17,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:17,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:17,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:17,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:17,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:17" (1/1) ... [2020-11-22 13:05:17,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f53d895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:17, skipping insertion in model container [2020-11-22 13:05:17,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:17" (1/1) ... [2020-11-22 13:05:17,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:17,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:18,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:18,125 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:18,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:18,184 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:18,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18 WrapperNode [2020-11-22 13:05:18,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:18,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:18,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:18,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:18,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:18,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:18,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:18,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:18,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:18,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:18,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:18,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:18,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/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 [2020-11-22 13:05:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:18,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:19,016 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:19,016 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-22 13:05:19,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:19 BoogieIcfgContainer [2020-11-22 13:05:19,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:19,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:19,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:19,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:19,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:17" (1/3) ... [2020-11-22 13:05:19,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc69239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:19, skipping insertion in model container [2020-11-22 13:05:19,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (2/3) ... [2020-11-22 13:05:19,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc69239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:19, skipping insertion in model container [2020-11-22 13:05:19,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:19" (3/3) ... [2020-11-22 13:05:19,029 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound1.c [2020-11-22 13:05:19,045 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:19,051 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-22 13:05:19,066 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-22 13:05:19,093 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:19,093 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:19,093 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:19,093 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:19,093 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:19,093 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:19,093 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:19,094 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:19,115 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-11-22 13:05:19,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:05:19,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:19,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:05:19,132 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:19,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:19,147 INFO L82 PathProgramCache]: Analyzing trace with hash 117073761, now seen corresponding path program 1 times [2020-11-22 13:05:19,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:19,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613099309] [2020-11-22 13:05:19,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:19,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613099309] [2020-11-22 13:05:19,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:19,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:19,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725332941] [2020-11-22 13:05:19,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:05:19,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:19,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:05:19,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:19,312 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-11-22 13:05:19,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:19,329 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-11-22 13:05:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:05:19,330 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-22 13:05:19,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:19,346 INFO L225 Difference]: With dead ends: 33 [2020-11-22 13:05:19,346 INFO L226 Difference]: Without dead ends: 15 [2020-11-22 13:05:19,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:19,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-22 13:05:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-22 13:05:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-22 13:05:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-22 13:05:19,387 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2020-11-22 13:05:19,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:19,387 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-22 13:05:19,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:05:19,388 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-11-22 13:05:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:05:19,388 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:19,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:05:19,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:19,389 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:19,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:19,392 INFO L82 PathProgramCache]: Analyzing trace with hash 115876164, now seen corresponding path program 1 times [2020-11-22 13:05:19,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:19,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963803519] [2020-11-22 13:05:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:19,430 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:05:19,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265069004] [2020-11-22 13:05:19,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/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 [2020-11-22 13:05:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:19,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 13:05:19,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:19,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:19,622 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:19,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963803519] [2020-11-22 13:05:19,638 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:05:19,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265069004] [2020-11-22 13:05:19,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:19,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:05:19,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865972394] [2020-11-22 13:05:19,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:05:19,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:19,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:05:19,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:19,642 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-11-22 13:05:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:21,936 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-22 13:05:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:21,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-22 13:05:21,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:21,938 INFO L225 Difference]: With dead ends: 33 [2020-11-22 13:05:21,938 INFO L226 Difference]: Without dead ends: 31 [2020-11-22 13:05:21,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:05:21,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-22 13:05:21,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 18. [2020-11-22 13:05:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 13:05:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-22 13:05:21,944 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 5 [2020-11-22 13:05:21,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:21,944 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-22 13:05:21,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:05:21,944 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-22 13:05:21,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:05:21,945 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:21,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:05:22,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 13:05:22,146 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:22,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:22,147 INFO L82 PathProgramCache]: Analyzing trace with hash -702832967, now seen corresponding path program 1 times [2020-11-22 13:05:22,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:22,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288927307] [2020-11-22 13:05:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:22,160 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:05:22,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817064399] [2020-11-22 13:05:22,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/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 [2020-11-22 13:05:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:22,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:05:22,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:22,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:22,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288927307] [2020-11-22 13:05:22,249 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:05:22,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817064399] [2020-11-22 13:05:22,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:22,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:05:22,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436456149] [2020-11-22 13:05:22,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:22,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:22,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:22,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:22,252 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-11-22 13:05:22,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:22,287 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-11-22 13:05:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:22,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 13:05:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:22,288 INFO L225 Difference]: With dead ends: 26 [2020-11-22 13:05:22,288 INFO L226 Difference]: Without dead ends: 18 [2020-11-22 13:05:22,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:22,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-22 13:05:22,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-22 13:05:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 13:05:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-22 13:05:22,292 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2020-11-22 13:05:22,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:22,293 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-22 13:05:22,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:22,293 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-22 13:05:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:05:22,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:22,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:22,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:22,510 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:22,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:22,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1081040302, now seen corresponding path program 1 times [2020-11-22 13:05:22,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:22,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334425135] [2020-11-22 13:05:22,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:22,523 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:05:22,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341409463] [2020-11-22 13:05:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/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 [2020-11-22 13:05:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:22,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-22 13:05:22,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:22,644 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-22 13:05:22,644 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:22,672 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-22 13:05:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:29,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:29,075 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:29,205 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-22 13:05:29,208 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:29,214 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:29,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334425135] [2020-11-22 13:05:29,239 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:05:29,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341409463] [2020-11-22 13:05:29,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:29,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 13:05:29,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321657463] [2020-11-22 13:05:29,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:05:29,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:29,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:05:29,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=61, Unknown=3, NotChecked=0, Total=90 [2020-11-22 13:05:29,242 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2020-11-22 13:05:29,383 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-22 13:05:29,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:29,900 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-11-22 13:05:29,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-22 13:05:29,902 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2020-11-22 13:05:29,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:29,903 INFO L225 Difference]: With dead ends: 42 [2020-11-22 13:05:29,903 INFO L226 Difference]: Without dead ends: 34 [2020-11-22 13:05:29,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=68, Invalid=139, Unknown=3, NotChecked=0, Total=210 [2020-11-22 13:05:29,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-22 13:05:29,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 21. [2020-11-22 13:05:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-22 13:05:29,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-22 13:05:29,910 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 8 [2020-11-22 13:05:29,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:29,910 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-22 13:05:29,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:05:29,910 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-22 13:05:29,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:05:29,911 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:29,911 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-11-22 13:05:30,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:30,122 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:30,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:30,123 INFO L82 PathProgramCache]: Analyzing trace with hash 899793160, now seen corresponding path program 1 times [2020-11-22 13:05:30,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:30,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527639103] [2020-11-22 13:05:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:30,135 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:05:30,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540851463] [2020-11-22 13:05:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/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 [2020-11-22 13:05:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:30,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:05:30,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:30,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:30,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527639103] [2020-11-22 13:05:30,228 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:05:30,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540851463] [2020-11-22 13:05:30,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1122613955] [2020-11-22 13:05:30,252 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 13:05:30,253 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:05:30,257 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:05:30,263 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:05:30,263 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:05:30,349 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:05:31,571 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:05:31,820 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-11-22 13:05:32,086 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-11-22 13:05:32,516 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2020-11-22 13:05:32,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:05:32,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2020-11-22 13:05:32,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857388509] [2020-11-22 13:05:32,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:05:32,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:32,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:05:32,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:05:32,586 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-11-22 13:05:32,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:32,730 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-11-22 13:05:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:32,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-22 13:05:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:32,732 INFO L225 Difference]: With dead ends: 25 [2020-11-22 13:05:32,732 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 13:05:32,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:05:32,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 13:05:32,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2020-11-22 13:05:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-22 13:05:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-11-22 13:05:32,737 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 9 [2020-11-22 13:05:32,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:32,738 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-22 13:05:32,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:05:32,738 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-11-22 13:05:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:05:32,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:32,738 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:32,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:32,956 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:32,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:32,956 INFO L82 PathProgramCache]: Analyzing trace with hash 2123757429, now seen corresponding path program 1 times [2020-11-22 13:05:32,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:32,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547525153] [2020-11-22 13:05:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:32,972 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:05:32,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644195850] [2020-11-22 13:05:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/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 [2020-11-22 13:05:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:05:33,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:05:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:05:33,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:05:33,107 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:05:33,108 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:05:33,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2020-11-22 13:05:33,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:33 BoogieIcfgContainer [2020-11-22 13:05:33,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:33,342 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:33,342 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:33,342 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:33,343 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:19" (3/4) ... [2020-11-22 13:05:33,344 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:05:33,403 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6838b2c9-9152-4724-a3b1-6710adb33f60/bin/utaipan/witness.graphml [2020-11-22 13:05:33,403 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:33,405 INFO L168 Benchmark]: Toolchain (without parser) took 15544.31 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 54.1 MB in the beginning and 63.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:33,405 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 86.0 MB. Free memory was 60.2 MB in the beginning and 60.2 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:33,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.99 ms. Allocated memory is still 86.0 MB. Free memory was 54.0 MB in the beginning and 63.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:33,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.39 ms. Allocated memory is still 86.0 MB. Free memory was 63.6 MB in the beginning and 62.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:33,407 INFO L168 Benchmark]: Boogie Preprocessor took 38.65 ms. Allocated memory is still 86.0 MB. Free memory was 62.0 MB in the beginning and 60.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:33,407 INFO L168 Benchmark]: RCFGBuilder took 755.40 ms. Allocated memory is still 86.0 MB. Free memory was 60.7 MB in the beginning and 36.1 MB in the end (delta: 24.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:33,408 INFO L168 Benchmark]: TraceAbstraction took 14321.56 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 35.5 MB in the beginning and 65.3 MB in the end (delta: -29.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:33,408 INFO L168 Benchmark]: Witness Printer took 61.47 ms. Allocated memory is still 104.9 MB. Free memory was 65.3 MB in the beginning and 63.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:33,411 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 86.0 MB. Free memory was 60.2 MB in the beginning and 60.2 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.99 ms. Allocated memory is still 86.0 MB. Free memory was 54.0 MB in the beginning and 63.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.39 ms. Allocated memory is still 86.0 MB. Free memory was 63.6 MB in the beginning and 62.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.65 ms. Allocated memory is still 86.0 MB. Free memory was 62.0 MB in the beginning and 60.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 755.40 ms. Allocated memory is still 86.0 MB. Free memory was 60.7 MB in the beginning and 36.1 MB in the end (delta: 24.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14321.56 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 35.5 MB in the beginning and 65.3 MB in the end (delta: -29.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 61.47 ms. Allocated memory is still 104.9 MB. Free memory was 65.3 MB in the beginning and 63.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int counter = 0; [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<1 [L12] COND FALSE !(!(cond)) VAL [counter=1] [L36] COND FALSE !(!(a != 0 && b != 0)) [L39] COND FALSE !(a % 2 == 0 && b % 2 == 0) [L43] COND TRUE a % 2 == 1 && b % 2 == 0 [L44] a = a - 1 [L45] q = q + b * p VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND FALSE !(counter++<1) [L12] COND TRUE !(cond) VAL [counter=2] [L5] __assert_fail("0", "prod4br-ll.c", 5, "reach_error") VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.2s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 76 SDslu, 135 SDs, 0 SdLazy, 130 SolverSat, 24 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 30 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 1538 SizeOfPredicates, 24 NumberOfNonLiveVariables, 267 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 1319, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 6, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 11, TOOLS_POST_TIME[ms]: 271, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 11, TOOLS_QUANTIFIERELIM_TIME[ms]: 260, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 230, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 20, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 967, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 6, DOMAIN_ISBOTTOM_APPLICATIONS: 6, DOMAIN_ISBOTTOM_TIME[ms]: 25, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 35, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 35, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 55, DAG_COMPRESSION_RETAINED_NODES: 25, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...