./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/jain_7-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/jain_7-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl --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 ec757148a991f4b3d1dfc96ef4137399e4a0f35295201340aed6c25a7180c165 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:45:50,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:45:50,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:45:50,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:45:50,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:45:50,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:45:50,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:45:50,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:45:50,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:45:50,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:45:50,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:45:50,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:45:50,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:45:50,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:45:50,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:45:50,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:45:50,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:45:50,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:45:50,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:45:50,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:45:50,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:45:50,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:45:50,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:45:50,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:45:50,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:45:50,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:45:50,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:45:50,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:45:50,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:45:50,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:45:50,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:45:50,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:45:50,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:45:50,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:45:50,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:45:50,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:45:50,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:45:50,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:45:50,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:45:50,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:45:50,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:45:50,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:45:50,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:45:50,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:45:50,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:45:50,772 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:45:50,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:45:50,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:45:50,779 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:45:50,779 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:45:50,780 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:45:50,780 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:45:50,780 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:45:50,780 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:45:50,780 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:45:50,780 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:45:50,781 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:45:50,781 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:45:50,781 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:45:50,781 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:45:50,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:45:50,782 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:45:50,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:45:50,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:45:50,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:45:50,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:45:50,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:45:50,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:45:50,784 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:45:50,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:45:50,784 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:45:50,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:45:50,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:45:50,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:45:50,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:50,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:45:50,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:45:50,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:45:50,786 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:45:50,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:45:50,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:45:50,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:45:50,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:45:50,787 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_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec757148a991f4b3d1dfc96ef4137399e4a0f35295201340aed6c25a7180c165 [2021-11-23 16:45:51,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:45:51,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:45:51,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:45:51,046 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:45:51,047 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:45:51,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/bitvector/jain_7-2.c [2021-11-23 16:45:51,112 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/data/94497b792/e696a1e82d634c47af8ca2d4021c1d45/FLAG9ae0ede4b [2021-11-23 16:45:51,559 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:45:51,560 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/sv-benchmarks/c/bitvector/jain_7-2.c [2021-11-23 16:45:51,581 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/data/94497b792/e696a1e82d634c47af8ca2d4021c1d45/FLAG9ae0ede4b [2021-11-23 16:45:51,963 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/data/94497b792/e696a1e82d634c47af8ca2d4021c1d45 [2021-11-23 16:45:51,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:45:51,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:45:51,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:51,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:45:51,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:45:51,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:51" (1/1) ... [2021-11-23 16:45:51,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b147317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:51, skipping insertion in model container [2021-11-23 16:45:51,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:51" (1/1) ... [2021-11-23 16:45:51,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:45:51,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:45:52,192 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/sv-benchmarks/c/bitvector/jain_7-2.c[675,688] [2021-11-23 16:45:52,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:52,218 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:45:52,231 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/sv-benchmarks/c/bitvector/jain_7-2.c[675,688] [2021-11-23 16:45:52,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:52,248 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:45:52,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:52 WrapperNode [2021-11-23 16:45:52,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:52,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:52,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:45:52,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:45:52,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:52" (1/1) ... [2021-11-23 16:45:52,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:52" (1/1) ... [2021-11-23 16:45:52,283 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2021-11-23 16:45:52,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:52,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:45:52,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:45:52,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:45:52,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:52" (1/1) ... [2021-11-23 16:45:52,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:52" (1/1) ... [2021-11-23 16:45:52,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:52" (1/1) ... [2021-11-23 16:45:52,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:52" (1/1) ... [2021-11-23 16:45:52,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:52" (1/1) ... [2021-11-23 16:45:52,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:52" (1/1) ... [2021-11-23 16:45:52,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:52" (1/1) ... [2021-11-23 16:45:52,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:45:52,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:45:52,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:45:52,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:45:52,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:52" (1/1) ... [2021-11-23 16:45:52,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:52,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:45:52,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:45:52,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:45:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:45:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:45:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:45:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:45:52,459 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:45:52,460 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:45:52,542 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:45:52,557 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$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) [2021-11-23 16:45:52,570 INFO L158 Benchmark]: Toolchain (without parser) took 592.62ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 68.7MB in the beginning and 94.1MB in the end (delta: -25.4MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2021-11-23 16:45:52,571 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 57.2MB in the beginning and 57.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:45:52,573 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.59ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 68.5MB in the beginning and 105.1MB in the end (delta: -36.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 16:45:52,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.00ms. Allocated memory is still 130.0MB. Free memory was 105.1MB in the beginning and 103.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:45:52,574 INFO L158 Benchmark]: Boogie Preprocessor took 36.94ms. Allocated memory is still 130.0MB. Free memory was 103.5MB in the beginning and 103.0MB in the end (delta: 554.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:45:52,576 INFO L158 Benchmark]: RCFGBuilder took 236.44ms. Allocated memory is still 130.0MB. Free memory was 103.0MB in the beginning and 94.1MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:45:52,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 57.2MB in the beginning and 57.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.59ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 68.5MB in the beginning and 105.1MB in the end (delta: -36.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.00ms. Allocated memory is still 130.0MB. Free memory was 105.1MB in the beginning and 103.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.94ms. Allocated memory is still 130.0MB. Free memory was 103.5MB in the beginning and 103.0MB in the end (delta: 554.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 236.44ms. Allocated memory is still 130.0MB. Free memory was 103.0MB in the beginning and 94.1MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:45:52,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/jain_7-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl --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 ec757148a991f4b3d1dfc96ef4137399e4a0f35295201340aed6c25a7180c165 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:45:55,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:45:55,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:45:55,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:45:55,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:45:55,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:45:55,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:45:55,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:45:55,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:45:55,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:45:55,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:45:55,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:45:55,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:45:55,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:45:55,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:45:55,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:45:55,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:45:55,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:45:55,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:45:55,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:45:55,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:45:55,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:45:55,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:45:55,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:45:55,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:45:55,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:45:55,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:45:55,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:45:55,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:45:55,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:45:55,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:45:55,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:45:55,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:45:55,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:45:55,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:45:55,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:45:55,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:45:55,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:45:55,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:45:55,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:45:55,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:45:55,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:45:55,206 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:45:55,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:45:55,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:45:55,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:45:55,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:45:55,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:45:55,208 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:45:55,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:45:55,209 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:45:55,209 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:45:55,209 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:45:55,210 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:45:55,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:45:55,211 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:45:55,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:45:55,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:45:55,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:45:55,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:45:55,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:45:55,212 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:45:55,212 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:45:55,213 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:45:55,213 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:45:55,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:45:55,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:45:55,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:45:55,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:45:55,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:45:55,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:45:55,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:55,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:45:55,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:45:55,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:45:55,215 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:45:55,216 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:45:55,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:45:55,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:45:55,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:45:55,216 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec757148a991f4b3d1dfc96ef4137399e4a0f35295201340aed6c25a7180c165 [2021-11-23 16:45:55,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:45:55,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:45:55,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:45:55,664 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:45:55,666 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:45:55,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/bitvector/jain_7-2.c [2021-11-23 16:45:55,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/data/0f18c0786/9e54a75c64804099a17ed0e1f721f027/FLAG808183e1f [2021-11-23 16:45:56,324 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:45:56,324 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/sv-benchmarks/c/bitvector/jain_7-2.c [2021-11-23 16:45:56,331 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/data/0f18c0786/9e54a75c64804099a17ed0e1f721f027/FLAG808183e1f [2021-11-23 16:45:56,742 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/data/0f18c0786/9e54a75c64804099a17ed0e1f721f027 [2021-11-23 16:45:56,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:45:56,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:45:56,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:56,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:45:56,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:45:56,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:56" (1/1) ... [2021-11-23 16:45:56,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@208b9e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:56, skipping insertion in model container [2021-11-23 16:45:56,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:56" (1/1) ... [2021-11-23 16:45:56,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:45:56,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:45:56,950 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/sv-benchmarks/c/bitvector/jain_7-2.c[675,688] [2021-11-23 16:45:56,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:56,978 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:45:56,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/sv-benchmarks/c/bitvector/jain_7-2.c[675,688] [2021-11-23 16:45:57,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:57,031 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:45:57,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:57 WrapperNode [2021-11-23 16:45:57,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:57,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:57,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:45:57,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:45:57,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:57" (1/1) ... [2021-11-23 16:45:57,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:57" (1/1) ... [2021-11-23 16:45:57,078 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2021-11-23 16:45:57,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:57,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:45:57,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:45:57,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:45:57,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:57" (1/1) ... [2021-11-23 16:45:57,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:57" (1/1) ... [2021-11-23 16:45:57,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:57" (1/1) ... [2021-11-23 16:45:57,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:57" (1/1) ... [2021-11-23 16:45:57,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:57" (1/1) ... [2021-11-23 16:45:57,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:57" (1/1) ... [2021-11-23 16:45:57,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:57" (1/1) ... [2021-11-23 16:45:57,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:45:57,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:45:57,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:45:57,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:45:57,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:57" (1/1) ... [2021-11-23 16:45:57,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:57,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:45:57,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:45:57,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:45:57,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:45:57,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:45:57,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:45:57,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:45:57,282 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:45:57,284 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:45:57,433 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:45:57,438 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:45:57,438 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 16:45:57,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:57 BoogieIcfgContainer [2021-11-23 16:45:57,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:45:57,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:45:57,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:45:57,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:45:57,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:45:56" (1/3) ... [2021-11-23 16:45:57,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604fe367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:45:57, skipping insertion in model container [2021-11-23 16:45:57,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:57" (2/3) ... [2021-11-23 16:45:57,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604fe367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:45:57, skipping insertion in model container [2021-11-23 16:45:57,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:57" (3/3) ... [2021-11-23 16:45:57,448 INFO L111 eAbstractionObserver]: Analyzing ICFG jain_7-2.c [2021-11-23 16:45:57,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:45:57,454 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:45:57,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:45:57,511 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 16:45:57,511 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:45:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:57,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 16:45:57,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:57,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 16:45:57,532 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:57,538 INFO L85 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-11-23 16:45:57,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:57,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148687606] [2021-11-23 16:45:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:57,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:57,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:57,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:57,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:45:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:57,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:45:57,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:57,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:57,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:57,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148687606] [2021-11-23 16:45:57,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148687606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:57,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:57,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 16:45:57,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843708483] [2021-11-23 16:45:57,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:57,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 16:45:57,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:58,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 16:45:58,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 16:45:58,045 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:58,106 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2021-11-23 16:45:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 16:45:58,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-23 16:45:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:58,121 INFO L225 Difference]: With dead ends: 20 [2021-11-23 16:45:58,122 INFO L226 Difference]: Without dead ends: 11 [2021-11-23 16:45:58,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 16:45:58,132 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:58,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:45:58,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-23 16:45:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2021-11-23 16:45:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:58,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-23 16:45:58,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2021-11-23 16:45:58,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:58,174 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-23 16:45:58,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:58,175 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-23 16:45:58,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 16:45:58,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:58,177 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:58,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:58,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:58,378 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:58,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash 300686882, now seen corresponding path program 1 times [2021-11-23 16:45:58,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:58,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194074215] [2021-11-23 16:45:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:58,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:58,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:58,382 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:58,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 16:45:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:58,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 16:45:58,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:58,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:46:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:03,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:03,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194074215] [2021-11-23 16:46:03,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194074215] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:46:03,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [357440059] [2021-11-23 16:46:03,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:03,170 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:46:03,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:46:03,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:46:03,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-23 16:46:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:03,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 16:46:03,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:03,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:46:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:09,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [357440059] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:46:09,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300960363] [2021-11-23 16:46:09,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:09,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:46:09,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:46:09,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 16:46:09,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 16:46:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:09,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 16:46:09,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:10,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:10,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:46:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:28,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300960363] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:46:28,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 16:46:28,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 12 [2021-11-23 16:46:28,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531835339] [2021-11-23 16:46:28,589 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 16:46:28,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 16:46:28,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 16:46:28,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=75, Unknown=13, NotChecked=0, Total=132 [2021-11-23 16:46:28,592 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:34,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:34,697 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-23 16:46:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:46:34,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 16:46:34,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:34,698 INFO L225 Difference]: With dead ends: 17 [2021-11-23 16:46:34,699 INFO L226 Difference]: Without dead ends: 15 [2021-11-23 16:46:34,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=51, Invalid=89, Unknown=16, NotChecked=0, Total=156 [2021-11-23 16:46:34,701 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:34,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 31 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2021-11-23 16:46:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-23 16:46:34,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-23 16:46:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-23 16:46:34,707 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-23 16:46:34,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:34,707 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-23 16:46:34,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:34,708 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-23 16:46:34,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 16:46:34,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:34,709 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2021-11-23 16:46:34,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-11-23 16:46:34,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-23 16:46:35,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-23 16:46:35,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:35,311 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:46:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:35,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1259862306, now seen corresponding path program 2 times [2021-11-23 16:46:35,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:35,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679877497] [2021-11-23 16:46:35,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 16:46:35,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:35,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:35,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:35,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 16:46:35,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 16:46:35,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 16:46:35,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 16:46:35,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:44,249 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 9 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:44,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:47:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 12 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:09,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:09,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679877497] [2021-11-23 16:47:09,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679877497] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:47:09,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [36510996] [2021-11-23 16:47:09,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 16:47:09,140 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:47:09,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:47:09,154 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:47:09,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-23 16:47:09,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 16:47:09,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 16:47:09,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 16:47:09,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 9 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:17,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:48:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 12 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:18,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [36510996] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:48:18,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91959949] [2021-11-23 16:48:18,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 16:48:18,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:48:18,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:48:18,960 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 16:48:18,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 16:48:19,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 16:48:19,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 16:48:19,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 16:48:19,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 7 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:27,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:49:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 12 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:46,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91959949] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:49:46,964 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 16:49:46,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 19 [2021-11-23 16:49:46,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525776843] [2021-11-23 16:49:46,964 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 16:49:46,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 16:49:46,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:46,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 16:49:46,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=161, Unknown=83, NotChecked=0, Total=342 [2021-11-23 16:49:46,967 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:05,070 WARN L227 SmtUtils]: Spent 12.07s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 16:50:23,324 WARN L227 SmtUtils]: Spent 12.07s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 16:51:08,687 WARN L227 SmtUtils]: Spent 28.51s on a formula simplification. DAG size of input: 88 DAG size of output: 85 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 16:51:43,346 WARN L227 SmtUtils]: Spent 10.16s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 16:52:07,761 WARN L227 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 50 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 16:52:50,094 WARN L227 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 16:53:14,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:53:14,269 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-11-23 16:53:14,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 16:53:14,270 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 16:53:14,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:53:14,270 INFO L225 Difference]: With dead ends: 29 [2021-11-23 16:53:14,270 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 16:53:14,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 396.6s TimeCoverageRelationStatistics Valid=215, Invalid=340, Unknown=147, NotChecked=0, Total=702 [2021-11-23 16:53:14,284 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:53:14,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 50 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2021-11-23 16:53:14,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 16:53:14,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-23 16:53:14,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:53:14,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-11-23 16:53:14,294 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2021-11-23 16:53:14,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:53:14,295 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-11-23 16:53:14,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:53:14,296 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-11-23 16:53:14,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 16:53:14,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:53:14,297 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2021-11-23 16:53:14,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 16:53:14,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 16:53:14,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-23 16:53:14,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt [2021-11-23 16:53:14,910 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:53:14,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:53:14,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1813057758, now seen corresponding path program 3 times [2021-11-23 16:53:14,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:53:14,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23935764] [2021-11-23 16:53:14,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 16:53:14,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:53:14,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:53:14,918 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:53:14,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 16:53:14,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-23 16:53:14,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 16:53:14,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 16:53:14,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:54:34,743 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 14 refuted. 63 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:54:34,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:56:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 7 refuted. 70 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:30,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:56:30,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23935764] [2021-11-23 16:56:30,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23935764] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:56:30,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [195891269] [2021-11-23 16:56:30,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 16:56:30,876 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:56:30,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:56:30,883 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:56:30,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3d60af-1f59-44fa-a420-93eb80daaa0b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-23 16:56:31,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-23 16:56:31,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 16:56:31,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 16:56:31,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:57:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 14 refuted. 63 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:57:49,637 INFO L328 TraceCheckSpWp]: Computing backward predicates...