./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-023.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-023.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f84ecbe935a7bc7919ebeab0f8b3a08147b8e5773dfa8569f722fcc90f95c5e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:13:17,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:13:17,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:13:17,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:13:17,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:13:17,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:13:17,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:13:17,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:13:17,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:13:17,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:13:17,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:13:17,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:13:17,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:13:17,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:13:17,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:13:17,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:13:17,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:13:17,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:13:17,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:13:17,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:13:17,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:13:17,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:13:17,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:13:17,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:13:17,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:13:17,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:13:17,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:13:17,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:13:17,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:13:17,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:13:17,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:13:17,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:13:17,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:13:17,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:13:17,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:13:17,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:13:17,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:13:17,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:13:17,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:13:17,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:13:17,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:13:17,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 23:13:17,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:13:17,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:13:17,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:13:17,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:13:17,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:13:17,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:13:17,712 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:13:17,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:13:17,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:13:17,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:13:17,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:13:17,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:13:17,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:13:17,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:13:17,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:13:17,714 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:13:17,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:13:17,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:13:17,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:13:17,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:13:17,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:13:17,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:13:17,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:13:17,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:13:17,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:13:17,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:13:17,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:13:17,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:13:17,717 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:13:17,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:13:17,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:13:17,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:13:17,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f84ecbe935a7bc7919ebeab0f8b3a08147b8e5773dfa8569f722fcc90f95c5e [2021-11-02 23:13:17,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:13:18,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:13:18,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:13:18,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:13:18,017 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:13:18,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/xcsp/Dubois-023.c [2021-11-02 23:13:18,104 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/data/86d1d0ec8/8700083bb6e64fcea12bcd92ab9b5f29/FLAG93641e5fd [2021-11-02 23:13:18,626 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:13:18,627 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/sv-benchmarks/c/xcsp/Dubois-023.c [2021-11-02 23:13:18,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/data/86d1d0ec8/8700083bb6e64fcea12bcd92ab9b5f29/FLAG93641e5fd [2021-11-02 23:13:18,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/data/86d1d0ec8/8700083bb6e64fcea12bcd92ab9b5f29 [2021-11-02 23:13:18,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:13:18,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:13:18,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:13:18,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:13:18,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:13:18,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:13:18" (1/1) ... [2021-11-02 23:13:18,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e70253b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:18, skipping insertion in model container [2021-11-02 23:13:18,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:13:18" (1/1) ... [2021-11-02 23:13:18,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:13:19,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:13:19,421 WARN L228 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_af70a812-836e-4340-b6b9-941280a68788/sv-benchmarks/c/xcsp/Dubois-023.c[16452,16465] [2021-11-02 23:13:19,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:13:19,449 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:13:19,546 WARN L228 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_af70a812-836e-4340-b6b9-941280a68788/sv-benchmarks/c/xcsp/Dubois-023.c[16452,16465] [2021-11-02 23:13:19,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:13:19,568 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:13:19,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:19 WrapperNode [2021-11-02 23:13:19,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:13:19,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:13:19,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:13:19,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:13:19,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:19" (1/1) ... [2021-11-02 23:13:19,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:19" (1/1) ... [2021-11-02 23:13:19,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:13:19,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:13:19,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:13:19,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:13:19,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:19" (1/1) ... [2021-11-02 23:13:19,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:19" (1/1) ... [2021-11-02 23:13:19,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:19" (1/1) ... [2021-11-02 23:13:19,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:19" (1/1) ... [2021-11-02 23:13:19,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:19" (1/1) ... [2021-11-02 23:13:19,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:19" (1/1) ... [2021-11-02 23:13:19,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:19" (1/1) ... [2021-11-02 23:13:19,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:13:19,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:13:19,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:13:19,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:13:19,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:19" (1/1) ... [2021-11-02 23:13:19,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:13:19,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:19,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:13:19,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:13:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:13:19,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:13:19,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:13:19,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:13:21,092 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:13:21,092 INFO L299 CfgBuilder]: Removed 372 assume(true) statements. [2021-11-02 23:13:21,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:13:21 BoogieIcfgContainer [2021-11-02 23:13:21,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:13:21,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:13:21,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:13:21,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:13:21,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:13:18" (1/3) ... [2021-11-02 23:13:21,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ada8468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:13:21, skipping insertion in model container [2021-11-02 23:13:21,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:19" (2/3) ... [2021-11-02 23:13:21,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ada8468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:13:21, skipping insertion in model container [2021-11-02 23:13:21,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:13:21" (3/3) ... [2021-11-02 23:13:21,123 INFO L111 eAbstractionObserver]: Analyzing ICFG Dubois-023.c [2021-11-02 23:13:21,132 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:13:21,133 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 23:13:21,178 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:13:21,184 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=PETRI_NET, 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 [2021-11-02 23:13:21,185 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 23:13:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 372 states have (on average 1.4973118279569892) internal successors, (557), 373 states have internal predecessors, (557), 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) [2021-11-02 23:13:21,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-02 23:13:21,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:21,241 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:13:21,241 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:13:21,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:21,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1422518603, now seen corresponding path program 1 times [2021-11-02 23:13:21,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:21,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341516580] [2021-11-02 23:13:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:21,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:21,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:21,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341516580] [2021-11-02 23:13:21,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341516580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:13:21,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:13:21,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 23:13:21,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239118525] [2021-11-02 23:13:21,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 23:13:21,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:21,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 23:13:21,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:13:21,735 INFO L87 Difference]: Start difference. First operand has 374 states, 372 states have (on average 1.4973118279569892) internal successors, (557), 373 states have internal predecessors, (557), 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 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 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) [2021-11-02 23:13:21,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:21,792 INFO L93 Difference]: Finished difference Result 742 states and 1108 transitions. [2021-11-02 23:13:21,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 23:13:21,793 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 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 370 [2021-11-02 23:13:21,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:21,816 INFO L225 Difference]: With dead ends: 742 [2021-11-02 23:13:21,816 INFO L226 Difference]: Without dead ends: 371 [2021-11-02 23:13:21,824 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:13:21,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-02 23:13:21,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-11-02 23:13:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.0) internal successors, (370), 370 states have internal predecessors, (370), 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) [2021-11-02 23:13:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 370 transitions. [2021-11-02 23:13:21,896 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 370 transitions. Word has length 370 [2021-11-02 23:13:21,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:21,897 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 370 transitions. [2021-11-02 23:13:21,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 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) [2021-11-02 23:13:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 370 transitions. [2021-11-02 23:13:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-02 23:13:21,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:21,908 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:13:21,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:13:21,908 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:13:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:21,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1816143283, now seen corresponding path program 1 times [2021-11-02 23:13:21,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:21,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629328981] [2021-11-02 23:13:21,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:21,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:13:22,888 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 23:13:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:13:23,773 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 23:13:23,774 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-02 23:13:23,776 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 23:13:23,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:13:23,780 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-02 23:13:23,785 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 23:13:23,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:13:23 BoogieIcfgContainer [2021-11-02 23:13:23,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 23:13:24,001 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 23:13:24,001 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 23:13:24,002 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 23:13:24,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:13:21" (3/4) ... [2021-11-02 23:13:24,005 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-02 23:13:24,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 23:13:24,008 INFO L168 Benchmark]: Toolchain (without parser) took 5048.14 ms. Allocated memory was 94.4 MB in the beginning and 176.2 MB in the end (delta: 81.8 MB). Free memory was 55.2 MB in the beginning and 90.7 MB in the end (delta: -35.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.1 GB. [2021-11-02 23:13:24,008 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory is still 72.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:13:24,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 608.58 ms. Allocated memory is still 94.4 MB. Free memory was 54.9 MB in the beginning and 51.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-02 23:13:24,013 INFO L168 Benchmark]: Boogie Procedure Inliner took 141.96 ms. Allocated memory is still 94.4 MB. Free memory was 51.5 MB in the beginning and 40.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 23:13:24,018 INFO L168 Benchmark]: Boogie Preprocessor took 144.84 ms. Allocated memory is still 94.4 MB. Free memory was 40.2 MB in the beginning and 34.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-02 23:13:24,019 INFO L168 Benchmark]: RCFGBuilder took 1246.78 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 34.4 MB in the beginning and 60.8 MB in the end (delta: -26.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-11-02 23:13:24,020 INFO L168 Benchmark]: TraceAbstraction took 2887.24 ms. Allocated memory was 123.7 MB in the beginning and 176.2 MB in the end (delta: 52.4 MB). Free memory was 60.8 MB in the beginning and 90.7 MB in the end (delta: -29.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.1 GB. [2021-11-02 23:13:24,021 INFO L168 Benchmark]: Witness Printer took 4.64 ms. Allocated memory is still 176.2 MB. Free memory is still 90.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:13:24,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory is still 72.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 608.58 ms. Allocated memory is still 94.4 MB. Free memory was 54.9 MB in the beginning and 51.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 141.96 ms. Allocated memory is still 94.4 MB. Free memory was 51.5 MB in the beginning and 40.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 144.84 ms. Allocated memory is still 94.4 MB. Free memory was 40.2 MB in the beginning and 34.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1246.78 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 34.4 MB in the beginning and 60.8 MB in the end (delta: -26.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2887.24 ms. Allocated memory was 123.7 MB in the beginning and 176.2 MB in the end (delta: 52.4 MB). Free memory was 60.8 MB in the beginning and 90.7 MB in the end (delta: -29.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.64 ms. Allocated memory is still 176.2 MB. Free memory is still 90.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 486]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 482. Possible FailurePath: [L22] int cond0; [L23] int dummy = 0; [L24] int N; [L25] int var0; [L26] var0 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L29] int var1; [L30] var1 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L33] int var2; [L34] var2 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L37] int var3; [L38] var3 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L41] int var4; [L42] var4 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L45] int var5; [L46] var5 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L49] int var6; [L50] var6 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L53] int var7; [L54] var7 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L57] int var8; [L58] var8 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L61] int var9; [L62] var9 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L65] int var10; [L66] var10 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L69] int var11; [L70] var11 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L73] int var12; [L74] var12 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L77] int var13; [L78] var13 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L81] int var14; [L82] var14 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L85] int var15; [L86] var15 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L89] int var16; [L90] var16 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L93] int var17; [L94] var17 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L97] int var18; [L98] var18 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L101] int var19; [L102] var19 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L105] int var20; [L106] var20 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L109] int var21; [L110] var21 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L113] int var22; [L114] var22 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L117] int var23; [L118] var23 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L121] int var24; [L122] var24 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L125] int var25; [L126] var25 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L129] int var26; [L130] var26 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L133] int var27; [L134] var27 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L137] int var28; [L138] var28 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L141] int var29; [L142] var29 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L145] int var30; [L146] var30 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L149] int var31; [L150] var31 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L153] int var32; [L154] var32 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L157] int var33; [L158] var33 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L161] int var34; [L162] var34 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L165] int var35; [L166] var35 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L169] int var36; [L170] var36 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L173] int var37; [L174] var37 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L177] int var38; [L178] var38 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L181] int var39; [L182] var39 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L185] int var40; [L186] var40 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L189] int var41; [L190] var41 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L193] int var42; [L194] var42 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L197] int var43; [L198] var43 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L201] int var44; [L202] var44 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L205] int var45; [L206] var45 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L209] int var46; [L210] var46 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L213] int var47; [L214] var47 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L217] int var48; [L218] var48 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L221] int var49; [L222] var49 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L225] int var50; [L226] var50 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L229] int var51; [L230] var51 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L233] int var52; [L234] var52 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L237] int var53; [L238] var53 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L241] int var54; [L242] var54 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L245] int var55; [L246] var55 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L249] int var56; [L250] var56 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L253] int var57; [L254] var57 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L257] int var58; [L258] var58 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L261] int var59; [L262] var59 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L265] int var60; [L266] var60 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L269] int var61; [L270] var61 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L273] int var62; [L274] var62 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L277] int var63; [L278] var63 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L281] int var64; [L282] var64 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L285] int var65; [L286] var65 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L289] int var66; [L290] var66 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L293] int var67; [L294] var67 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L297] int var68; [L298] var68 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L301] int myvar0 = 1; [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L486] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 374 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 370 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=374occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 740 NumberOfCodeBlocks, 740 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 369 ConstructedInterpolants, 0 QuantifiedInterpolants, 369 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-02 23:13:24,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-023.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f84ecbe935a7bc7919ebeab0f8b3a08147b8e5773dfa8569f722fcc90f95c5e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:13:26,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:13:26,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:13:26,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:13:26,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:13:26,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:13:26,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:13:26,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:13:26,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:13:26,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:13:26,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:13:26,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:13:26,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:13:26,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:13:26,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:13:26,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:13:26,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:13:26,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:13:26,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:13:26,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:13:26,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:13:26,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:13:26,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:13:26,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:13:26,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:13:26,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:13:26,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:13:26,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:13:26,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:13:26,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:13:26,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:13:26,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:13:26,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:13:26,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:13:26,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:13:26,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:13:26,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:13:26,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:13:26,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:13:26,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:13:26,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:13:26,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-02 23:13:26,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:13:26,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:13:26,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:13:26,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:13:26,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:13:26,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:13:26,633 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:13:26,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:13:26,633 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:13:26,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:13:26,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:13:26,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:13:26,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:13:26,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:13:26,635 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 23:13:26,636 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 23:13:26,636 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:13:26,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:13:26,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:13:26,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:13:26,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:13:26,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:13:26,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:13:26,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:13:26,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:13:26,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:13:26,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:13:26,638 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 23:13:26,638 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 23:13:26,639 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:13:26,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:13:26,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:13:26,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:13:26,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 23:13:26,640 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_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f84ecbe935a7bc7919ebeab0f8b3a08147b8e5773dfa8569f722fcc90f95c5e [2021-11-02 23:13:27,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:13:27,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:13:27,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:13:27,076 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:13:27,077 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:13:27,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/xcsp/Dubois-023.c [2021-11-02 23:13:27,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/data/0d3e9002e/ea1b923266ea474a9b0b2a50eaaf0aed/FLAG6bd23f41a [2021-11-02 23:13:27,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:13:27,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/sv-benchmarks/c/xcsp/Dubois-023.c [2021-11-02 23:13:27,885 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/data/0d3e9002e/ea1b923266ea474a9b0b2a50eaaf0aed/FLAG6bd23f41a [2021-11-02 23:13:27,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/data/0d3e9002e/ea1b923266ea474a9b0b2a50eaaf0aed [2021-11-02 23:13:27,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:13:27,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:13:27,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:13:27,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:13:27,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:13:27,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:13:27" (1/1) ... [2021-11-02 23:13:27,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f89afa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:27, skipping insertion in model container [2021-11-02 23:13:27,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:13:27" (1/1) ... [2021-11-02 23:13:27,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:13:27,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:13:28,385 WARN L228 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_af70a812-836e-4340-b6b9-941280a68788/sv-benchmarks/c/xcsp/Dubois-023.c[16452,16465] [2021-11-02 23:13:28,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:13:28,406 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:13:28,519 WARN L228 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_af70a812-836e-4340-b6b9-941280a68788/sv-benchmarks/c/xcsp/Dubois-023.c[16452,16465] [2021-11-02 23:13:28,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:13:28,549 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:13:28,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:28 WrapperNode [2021-11-02 23:13:28,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:13:28,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:13:28,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:13:28,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:13:28,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:28" (1/1) ... [2021-11-02 23:13:28,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:28" (1/1) ... [2021-11-02 23:13:28,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:13:28,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:13:28,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:13:28,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:13:28,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:28" (1/1) ... [2021-11-02 23:13:28,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:28" (1/1) ... [2021-11-02 23:13:28,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:28" (1/1) ... [2021-11-02 23:13:28,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:28" (1/1) ... [2021-11-02 23:13:28,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:28" (1/1) ... [2021-11-02 23:13:28,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:28" (1/1) ... [2021-11-02 23:13:28,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:28" (1/1) ... [2021-11-02 23:13:28,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:13:28,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:13:28,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:13:28,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:13:28,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:28" (1/1) ... [2021-11-02 23:13:28,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:13:28,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:28,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:13:28,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:13:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:13:28,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:13:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 23:13:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:13:30,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:13:30,306 INFO L299 CfgBuilder]: Removed 372 assume(true) statements. [2021-11-02 23:13:30,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:13:30 BoogieIcfgContainer [2021-11-02 23:13:30,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:13:30,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:13:30,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:13:30,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:13:30,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:13:27" (1/3) ... [2021-11-02 23:13:30,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62763da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:13:30, skipping insertion in model container [2021-11-02 23:13:30,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:28" (2/3) ... [2021-11-02 23:13:30,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62763da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:13:30, skipping insertion in model container [2021-11-02 23:13:30,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:13:30" (3/3) ... [2021-11-02 23:13:30,321 INFO L111 eAbstractionObserver]: Analyzing ICFG Dubois-023.c [2021-11-02 23:13:30,327 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:13:30,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 23:13:30,394 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:13:30,402 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=PETRI_NET, 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 [2021-11-02 23:13:30,403 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 23:13:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 372 states have (on average 1.4973118279569892) internal successors, (557), 373 states have internal predecessors, (557), 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) [2021-11-02 23:13:30,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-02 23:13:30,481 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:30,483 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:13:30,484 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:13:30,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1422518603, now seen corresponding path program 1 times [2021-11-02 23:13:30,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:13:30,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379450243] [2021-11-02 23:13:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:30,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:13:30,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:13:30,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:13:30,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 23:13:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:31,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-02 23:13:31,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:31,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:13:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:32,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:13:32,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379450243] [2021-11-02 23:13:32,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379450243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:13:32,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:13:32,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 23:13:32,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552072375] [2021-11-02 23:13:32,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 23:13:32,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:13:32,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 23:13:32,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:13:32,674 INFO L87 Difference]: Start difference. First operand has 374 states, 372 states have (on average 1.4973118279569892) internal successors, (557), 373 states have internal predecessors, (557), 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 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 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) [2021-11-02 23:13:32,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:32,734 INFO L93 Difference]: Finished difference Result 742 states and 1108 transitions. [2021-11-02 23:13:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 23:13:32,736 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 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 370 [2021-11-02 23:13:32,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:32,762 INFO L225 Difference]: With dead ends: 742 [2021-11-02 23:13:32,762 INFO L226 Difference]: Without dead ends: 371 [2021-11-02 23:13:32,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:13:32,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-02 23:13:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-11-02 23:13:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.0) internal successors, (370), 370 states have internal predecessors, (370), 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) [2021-11-02 23:13:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 370 transitions. [2021-11-02 23:13:32,852 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 370 transitions. Word has length 370 [2021-11-02 23:13:32,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:32,854 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 370 transitions. [2021-11-02 23:13:32,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 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) [2021-11-02 23:13:32,855 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 370 transitions. [2021-11-02 23:13:32,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-02 23:13:32,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:32,869 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:13:32,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 23:13:33,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:13:33,090 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:13:33,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:33,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1816143283, now seen corresponding path program 1 times [2021-11-02 23:13:33,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:13:33,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021005703] [2021-11-02 23:13:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:33,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:13:33,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:13:33,098 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:13:33,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af70a812-836e-4340-b6b9-941280a68788/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 23:14:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:10,358 WARN L261 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 348 conjunts are in the unsatisfiable core [2021-11-02 23:14:10,403 INFO L286 TraceCheckSpWp]: Computing forward predicates...