./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur --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 a5dbdf40c5c8abdf745ea2973f48a7f1bd1d56b53cd410b7a2d364d83fc651a9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:10:59,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:10:59,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:10:59,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:10:59,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:10:59,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:10:59,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:10:59,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:10:59,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:10:59,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:10:59,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:10:59,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:10:59,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:10:59,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:10:59,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:10:59,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:10:59,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:10:59,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:10:59,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:10:59,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:10:59,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:10:59,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:10:59,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:10:59,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:10:59,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:10:59,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:10:59,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:10:59,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:10:59,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:10:59,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:10:59,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:10:59,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:10:59,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:10:59,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:10:59,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:10:59,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:10:59,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:10:59,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:10:59,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:10:59,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:10:59,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:10:59,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:10:59,862 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:10:59,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:10:59,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:10:59,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:10:59,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:10:59,864 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:10:59,864 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:10:59,864 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:10:59,864 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:10:59,864 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:10:59,865 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:10:59,865 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:10:59,865 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:10:59,865 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:10:59,865 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:10:59,866 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:10:59,866 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:10:59,866 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:10:59,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:10:59,867 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:10:59,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:10:59,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:10:59,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:10:59,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:10:59,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:10:59,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:10:59,869 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:10:59,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:10:59,869 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:10:59,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:10:59,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:10:59,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:10:59,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:10:59,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:10:59,870 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:10:59,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:10:59,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:10:59,871 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:10:59,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:10:59,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:10:59,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:10:59,872 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_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5dbdf40c5c8abdf745ea2973f48a7f1bd1d56b53cd410b7a2d364d83fc651a9 [2022-11-26 00:11:00,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:11:00,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:11:00,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:11:00,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:11:00,125 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:11:00,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/loop-lit/gj2007b.i [2022-11-26 00:11:03,294 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:11:03,510 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:11:03,511 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/sv-benchmarks/c/loop-lit/gj2007b.i [2022-11-26 00:11:03,518 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/data/b223095cd/627031950e134a20964fa19b0a11a0f4/FLAG59ca41e9a [2022-11-26 00:11:03,541 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/data/b223095cd/627031950e134a20964fa19b0a11a0f4 [2022-11-26 00:11:03,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:11:03,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:11:03,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:11:03,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:11:03,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:11:03,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b0a5b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03, skipping insertion in model container [2022-11-26 00:11:03,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:11:03,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:11:03,744 WARN L237 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_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/sv-benchmarks/c/loop-lit/gj2007b.i[895,908] [2022-11-26 00:11:03,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:11:03,764 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:11:03,778 WARN L237 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_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/sv-benchmarks/c/loop-lit/gj2007b.i[895,908] [2022-11-26 00:11:03,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:11:03,793 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:11:03,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03 WrapperNode [2022-11-26 00:11:03,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:11:03,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:11:03,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:11:03,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:11:03,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,824 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2022-11-26 00:11:03,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:11:03,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:11:03,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:11:03,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:11:03,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,856 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:11:03,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:11:03,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:11:03,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:11:03,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03" (1/1) ... [2022-11-26 00:11:03,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:11:03,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:11:03,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:11:03,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:11:03,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:11:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:11:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:11:03,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:11:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:11:03,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:11:04,032 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:11:04,034 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:11:04,168 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:11:04,199 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:11:04,200 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:11:04,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:11:04 BoogieIcfgContainer [2022-11-26 00:11:04,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:11:04,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:11:04,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:11:04,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:11:04,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:11:03" (1/3) ... [2022-11-26 00:11:04,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412c18de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:11:04, skipping insertion in model container [2022-11-26 00:11:04,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:03" (2/3) ... [2022-11-26 00:11:04,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412c18de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:11:04, skipping insertion in model container [2022-11-26 00:11:04,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:11:04" (3/3) ... [2022-11-26 00:11:04,213 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2022-11-26 00:11:04,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:11:04,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:11:04,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:11:04,327 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4182794d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:11:04,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:11:04,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:11:04,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:11:04,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:04,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:11:04,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:11:04,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:04,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2101338691, now seen corresponding path program 1 times [2022-11-26 00:11:04,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:04,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665010505] [2022-11-26 00:11:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:04,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:04,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:04,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665010505] [2022-11-26 00:11:04,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665010505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:04,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:04,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:11:04,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604043519] [2022-11-26 00:11:04,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:04,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:11:04,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:04,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:11:04,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:11:04,900 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:11:04,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:04,986 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2022-11-26 00:11:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:11:04,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-26 00:11:04,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:04,998 INFO L225 Difference]: With dead ends: 30 [2022-11-26 00:11:05,003 INFO L226 Difference]: Without dead ends: 17 [2022-11-26 00:11:05,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:11:05,014 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:05,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 24 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:11:05,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-26 00:11:05,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-11-26 00:11:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:11:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-11-26 00:11:05,093 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2022-11-26 00:11:05,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:05,094 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-11-26 00:11:05,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:11:05,095 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-11-26 00:11:05,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:11:05,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:05,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:05,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:11:05,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:11:05,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:05,100 INFO L85 PathProgramCache]: Analyzing trace with hash -736059133, now seen corresponding path program 1 times [2022-11-26 00:11:05,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:05,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900188133] [2022-11-26 00:11:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:05,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:05,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:05,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900188133] [2022-11-26 00:11:05,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900188133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:11:05,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441789261] [2022-11-26 00:11:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:05,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:11:05,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:11:05,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:11:05,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:11:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:05,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:11:05,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:11:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:05,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:11:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:05,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441789261] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:11:05,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2050514033] [2022-11-26 00:11:05,650 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-26 00:11:05,650 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:11:05,654 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:11:05,659 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:11:05,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:11:06,002 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 24 for LOIs [2022-11-26 00:11:06,044 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:11:06,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2050514033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:06,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:11:06,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5] total 13 [2022-11-26 00:11:06,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276900302] [2022-11-26 00:11:06,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:06,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:11:06,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:06,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:11:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:11:06,181 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:11:06,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:06,229 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-26 00:11:06,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:11:06,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:11:06,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:06,231 INFO L225 Difference]: With dead ends: 22 [2022-11-26 00:11:06,231 INFO L226 Difference]: Without dead ends: 18 [2022-11-26 00:11:06,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:11:06,233 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:06,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 15 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:11:06,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-26 00:11:06,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2022-11-26 00:11:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:11:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-26 00:11:06,239 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2022-11-26 00:11:06,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:06,240 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-26 00:11:06,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:11:06,240 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-26 00:11:06,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:11:06,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:06,241 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:06,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:11:06,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:11:06,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:11:06,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash 127668256, now seen corresponding path program 1 times [2022-11-26 00:11:06,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:06,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441029366] [2022-11-26 00:11:06,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:06,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:06,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:06,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441029366] [2022-11-26 00:11:06,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441029366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:06,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:06,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:11:06,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071642332] [2022-11-26 00:11:06,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:06,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:11:06,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:11:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:11:06,603 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:11:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:06,713 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-11-26 00:11:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:11:06,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-26 00:11:06,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:06,715 INFO L225 Difference]: With dead ends: 23 [2022-11-26 00:11:06,715 INFO L226 Difference]: Without dead ends: 13 [2022-11-26 00:11:06,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:11:06,717 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:06,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:11:06,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-26 00:11:06,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-26 00:11:06,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:11:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-26 00:11:06,723 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-11-26 00:11:06,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:06,724 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-26 00:11:06,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:11:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-26 00:11:06,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:11:06,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:06,725 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:06,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:11:06,726 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:11:06,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1802983270, now seen corresponding path program 1 times [2022-11-26 00:11:06,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:06,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700983615] [2022-11-26 00:11:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:06,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:06,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:06,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700983615] [2022-11-26 00:11:06,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700983615] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:11:06,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085349000] [2022-11-26 00:11:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:06,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:11:06,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:11:06,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:11:06,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:11:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:06,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 00:11:06,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:11:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:07,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:11:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:07,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085349000] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:11:07,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [290246450] [2022-11-26 00:11:07,110 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-26 00:11:07,110 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:11:07,110 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:11:07,111 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:11:07,111 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:11:07,270 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 48 for LOIs [2022-11-26 00:11:07,372 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:11:07,819 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '324#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:11:07,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:11:07,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:11:07,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-26 00:11:07,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553572199] [2022-11-26 00:11:07,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:11:07,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:11:07,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:07,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:11:07,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:11:07,822 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 00:11:07,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:07,903 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-26 00:11:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:11:07,904 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 12 [2022-11-26 00:11:07,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:07,904 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:11:07,904 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:11:07,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:11:07,906 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:07,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 14 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:11:07,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:11:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:11:07,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-26 00:11:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:11:07,908 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-11-26 00:11:07,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:07,909 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:11:07,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 00:11:07,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:11:07,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:11:07,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:11:07,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:11:08,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:11:08,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-26 00:11:08,554 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-26 00:11:08,555 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~m~0#1|)) (.cse2 (= |#NULL.offset| 0)) (.cse3 (<= 0 |#StackHeapBarrier|)) (.cse1 (<= |ULTIMATE.start_main_~n~0#1| 0)) (.cse4 (= |#NULL.base| 0)) (.cse5 (<= 0 (+ |ULTIMATE.start_main_~n~0#1| 2147483648)))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~x~0#1| 0) .cse3 .cse4 .cse5) (and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (< |ULTIMATE.start_main_~m~0#1| (+ |ULTIMATE.start_main_~x~0#1| 1)) .cse0 (not (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~n~0#1|)) .cse2 .cse3 (or .cse1 (< |ULTIMATE.start_main_~m~0#1| |ULTIMATE.start_main_~n~0#1|)) .cse4 .cse5))) [2022-11-26 00:11:08,555 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-26 00:11:08,555 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 33) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (< |ULTIMATE.start_main_~m~0#1| (+ |ULTIMATE.start_main_~x~0#1| 1)) (<= 0 |ULTIMATE.start_main_~m~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (or (<= |ULTIMATE.start_main_~n~0#1| 0) (< |ULTIMATE.start_main_~m~0#1| |ULTIMATE.start_main_~n~0#1|)) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_main_~n~0#1| 2147483648))) [2022-11-26 00:11:08,555 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 33) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~m~0#1|)) (.cse2 (= |#NULL.offset| 0)) (.cse3 (<= 0 |#StackHeapBarrier|)) (.cse1 (<= |ULTIMATE.start_main_~n~0#1| 0)) (.cse4 (= |#NULL.base| 0)) (.cse5 (<= 0 (+ |ULTIMATE.start_main_~n~0#1| 2147483648)))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~x~0#1| 0) .cse3 .cse4 .cse5) (and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (< |ULTIMATE.start_main_~m~0#1| (+ |ULTIMATE.start_main_~x~0#1| 1)) .cse0 (not (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~n~0#1|)) .cse2 .cse3 (or .cse1 (< |ULTIMATE.start_main_~m~0#1| |ULTIMATE.start_main_~n~0#1|)) .cse4 .cse5))) [2022-11-26 00:11:08,555 INFO L902 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: true [2022-11-26 00:11:08,556 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-11-26 00:11:08,556 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-11-26 00:11:08,556 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-11-26 00:11:08,556 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-11-26 00:11:08,556 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-11-26 00:11:08,556 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-11-26 00:11:08,560 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-26 00:11:08,562 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:11:08,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:11:08 BoogieIcfgContainer [2022-11-26 00:11:08,577 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:11:08,577 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:11:08,577 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:11:08,578 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:11:08,578 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:11:04" (3/4) ... [2022-11-26 00:11:08,581 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:11:08,587 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-26 00:11:08,590 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-26 00:11:08,590 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-26 00:11:08,590 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-26 00:11:08,591 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:11:08,621 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:11:08,621 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:11:08,621 INFO L158 Benchmark]: Toolchain (without parser) took 5074.55ms. Allocated memory is still 174.1MB. Free memory was 130.3MB in the beginning and 78.9MB in the end (delta: 51.5MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. [2022-11-26 00:11:08,622 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 125.8MB. Free memory was 69.7MB in the beginning and 69.6MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:11:08,622 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.50ms. Allocated memory is still 174.1MB. Free memory was 130.3MB in the beginning and 119.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:11:08,622 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.23ms. Allocated memory is still 174.1MB. Free memory was 119.9MB in the beginning and 118.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:11:08,623 INFO L158 Benchmark]: Boogie Preprocessor took 39.49ms. Allocated memory is still 174.1MB. Free memory was 118.5MB in the beginning and 117.7MB in the end (delta: 715.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:11:08,623 INFO L158 Benchmark]: RCFGBuilder took 336.37ms. Allocated memory is still 174.1MB. Free memory was 117.7MB in the beginning and 106.5MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 00:11:08,623 INFO L158 Benchmark]: TraceAbstraction took 4371.60ms. Allocated memory is still 174.1MB. Free memory was 105.9MB in the beginning and 81.0MB in the end (delta: 24.9MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2022-11-26 00:11:08,624 INFO L158 Benchmark]: Witness Printer took 43.53ms. Allocated memory is still 174.1MB. Free memory was 81.0MB in the beginning and 78.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:11:08,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 125.8MB. Free memory was 69.7MB in the beginning and 69.6MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.50ms. Allocated memory is still 174.1MB. Free memory was 130.3MB in the beginning and 119.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.23ms. Allocated memory is still 174.1MB. Free memory was 119.9MB in the beginning and 118.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.49ms. Allocated memory is still 174.1MB. Free memory was 118.5MB in the beginning and 117.7MB in the end (delta: 715.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 336.37ms. Allocated memory is still 174.1MB. Free memory was 117.7MB in the beginning and 106.5MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4371.60ms. Allocated memory is still 174.1MB. Free memory was 105.9MB in the beginning and 81.0MB in the end (delta: 24.9MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Witness Printer took 43.53ms. Allocated memory is still 174.1MB. Free memory was 81.0MB in the beginning and 78.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 133 IncrementalHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 23 mSDtfsCounter, 133 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=1, InterpolantAutomatonStates: 27, 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, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 20 NumberOfFragments, 159 HoareAnnotationTreeSize, 11 FomulaSimplifications, 256 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 631 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 220 SizeOfPredicates, 6 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 8/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 6, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 7, TOOLS_POST_TIME: 0.3s, TOOLS_POST_CALL_APPLICATIONS: 1, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 8, TOOLS_QUANTIFIERELIM_TIME: 0.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 22, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 6, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 35, DAG_COMPRESSION_RETAINED_NODES: 25, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((n <= 2147483647 && m < x + 1) && 0 <= m) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && (n <= 0 || m < n)) && #NULL == 0) && 0 <= n + 2147483648 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-26 00:11:08,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1fd9e1-2f6c-4c5e-b14f-1e467ee0ce31/bin/utaipan-ByfvJB40ur/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 Writing output log to file Ultimate.log Result: TRUE