./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI --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 64bit --witnessprinter.graph.data.programhash 30b5dcf93a79d8afe3c9f56fd3d0402dbbe862066109b91e0024871328b74c65 --- 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-5e519f3 [2022-11-03 02:28:28,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:28:28,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:28:28,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:28:28,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:28:28,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:28:28,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:28:28,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:28:28,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:28:28,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:28:28,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:28:28,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:28:28,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:28:28,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:28:28,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:28:28,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:28:28,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:28:28,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:28:28,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:28:28,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:28:28,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:28:28,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:28:28,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:28:28,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:28:28,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:28:28,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:28:28,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:28:28,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:28:28,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:28:28,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:28:28,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:28:28,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:28:28,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:28:28,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:28:28,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:28:28,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:28:28,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:28:28,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:28:28,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:28:28,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:28:28,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:28:28,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:28:28,699 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:28:28,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:28:28,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:28:28,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:28:28,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:28:28,701 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:28:28,701 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:28:28,701 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:28:28,701 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:28:28,702 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:28:28,702 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:28:28,702 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:28:28,702 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:28:28,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:28:28,703 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:28:28,703 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:28:28,703 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:28:28,703 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:28:28,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:28:28,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:28:28,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:28:28,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:28:28,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:28:28,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:28:28,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:28:28,706 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:28:28,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:28:28,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:28:28,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:28:28,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:28:28,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:28:28,707 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:28:28,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:28:28,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:28:28,708 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:28:28,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:28:28,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:28:28,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:28:28,708 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_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30b5dcf93a79d8afe3c9f56fd3d0402dbbe862066109b91e0024871328b74c65 [2022-11-03 02:28:28,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:28:28,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:28:28,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:28:28,951 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:28:28,952 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:28:28,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i [2022-11-03 02:28:29,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/data/711de759b/cf0058cdbebd4b73b921f3ebea850a27/FLAG071a2e568 [2022-11-03 02:28:30,300 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:28:30,302 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i [2022-11-03 02:28:30,380 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/data/711de759b/cf0058cdbebd4b73b921f3ebea850a27/FLAG071a2e568 [2022-11-03 02:28:30,438 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/data/711de759b/cf0058cdbebd4b73b921f3ebea850a27 [2022-11-03 02:28:30,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:28:30,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:28:30,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:28:30,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:28:30,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:28:30,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:28:30" (1/1) ... [2022-11-03 02:28:30,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ebf3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:30, skipping insertion in model container [2022-11-03 02:28:30,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:28:30" (1/1) ... [2022-11-03 02:28:30,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:28:30,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:28:36,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i[733916,733929] [2022-11-03 02:28:36,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:28:36,929 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:28:37,780 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i[733916,733929] [2022-11-03 02:28:37,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:28:38,182 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:28:38,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38 WrapperNode [2022-11-03 02:28:38,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:28:38,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:28:38,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:28:38,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:28:38,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38" (1/1) ... [2022-11-03 02:28:38,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38" (1/1) ... [2022-11-03 02:28:39,134 INFO L138 Inliner]: procedures = 546, calls = 11380, calls flagged for inlining = 250, calls inlined = 209, statements flattened = 14674 [2022-11-03 02:28:39,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:28:39,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:28:39,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:28:39,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:28:39,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38" (1/1) ... [2022-11-03 02:28:39,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38" (1/1) ... [2022-11-03 02:28:39,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38" (1/1) ... [2022-11-03 02:28:39,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38" (1/1) ... [2022-11-03 02:28:39,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38" (1/1) ... [2022-11-03 02:28:39,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38" (1/1) ... [2022-11-03 02:28:39,951 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38" (1/1) ... [2022-11-03 02:28:39,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38" (1/1) ... [2022-11-03 02:28:40,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:28:40,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:28:40,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:28:40,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:28:40,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38" (1/1) ... [2022-11-03 02:28:40,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:28:40,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:28:40,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:28:40,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:28:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:28:40,296 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:28:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:28:40,296 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:28:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2022-11-03 02:28:40,296 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2022-11-03 02:28:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure eth_zero_addr [2022-11-03 02:28:40,296 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_zero_addr [2022-11-03 02:28:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2022-11-03 02:28:40,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2022-11-03 02:28:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2022-11-03 02:28:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2022-11-03 02:28:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:28:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:28:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:28:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:28:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:28:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:28:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:28:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:28:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-03 02:28:40,298 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-03 02:28:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2022-11-03 02:28:40,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2022-11-03 02:28:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure __tolower [2022-11-03 02:28:40,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __tolower [2022-11-03 02:28:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2022-11-03 02:28:40,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2022-11-03 02:28:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_7 [2022-11-03 02:28:40,299 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_7 [2022-11-03 02:28:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:28:40,299 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:28:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 02:28:40,299 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 02:28:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2022-11-03 02:28:40,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2022-11-03 02:28:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2022-11-03 02:28:40,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2022-11-03 02:28:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 02:28:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 02:28:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:28:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:28:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:28:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:28:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:28:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:28:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2022-11-03 02:28:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2022-11-03 02:28:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:28:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:28:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2022-11-03 02:28:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2022-11-03 02:28:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2022-11-03 02:28:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2022-11-03 02:28:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2022-11-03 02:28:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2022-11-03 02:28:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:28:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:28:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:28:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2022-11-03 02:28:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2022-11-03 02:28:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 02:28:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 02:28:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2022-11-03 02:28:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2022-11-03 02:28:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:28:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:28:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2022-11-03 02:28:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2022-11-03 02:28:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:28:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:28:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:28:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:28:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2022-11-03 02:28:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2022-11-03 02:28:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2022-11-03 02:28:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2022-11-03 02:28:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:28:40,319 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:28:40,319 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:28:40,319 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 02:28:40,319 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 02:28:40,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:28:40,319 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2022-11-03 02:28:40,320 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2022-11-03 02:28:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure pci_zalloc_consistent [2022-11-03 02:28:40,320 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_zalloc_consistent [2022-11-03 02:28:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2022-11-03 02:28:40,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2022-11-03 02:28:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:28:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:28:40,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:28:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2022-11-03 02:28:40,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2022-11-03 02:28:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2022-11-03 02:28:40,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2022-11-03 02:28:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:28:40,322 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:28:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:28:40,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:28:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 02:28:40,322 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 02:28:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:28:40,323 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:28:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2022-11-03 02:28:40,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2022-11-03 02:28:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:28:40,323 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:28:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2022-11-03 02:28:40,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2022-11-03 02:28:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2022-11-03 02:28:40,324 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2022-11-03 02:28:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2022-11-03 02:28:40,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2022-11-03 02:28:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:28:40,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:28:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_scan_event [2022-11-03 02:28:40,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_scan_event [2022-11-03 02:28:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:28:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2022-11-03 02:28:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:28:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2022-11-03 02:28:40,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2022-11-03 02:28:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:28:40,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:28:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:28:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-03 02:28:40,327 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-03 02:28:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:28:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2022-11-03 02:28:40,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2022-11-03 02:28:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_security_work [2022-11-03 02:28:40,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_security_work [2022-11-03 02:28:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2022-11-03 02:28:40,328 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2022-11-03 02:28:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 02:28:40,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 02:28:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2022-11-03 02:28:40,328 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2022-11-03 02:28:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:28:40,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:28:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2022-11-03 02:28:40,329 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2022-11-03 02:28:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2022-11-03 02:28:40,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2022-11-03 02:28:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-03 02:28:40,329 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-03 02:28:40,330 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2022-11-03 02:28:40,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2022-11-03 02:28:40,330 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2022-11-03 02:28:40,330 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2022-11-03 02:28:40,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:28:40,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:28:40,330 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2022-11-03 02:28:40,331 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2022-11-03 02:28:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2022-11-03 02:28:40,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2022-11-03 02:28:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2022-11-03 02:28:40,331 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2022-11-03 02:28:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 02:28:40,332 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 02:28:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:28:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:28:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:28:40,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:28:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2022-11-03 02:28:40,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2022-11-03 02:28:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-03 02:28:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-03 02:28:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2022-11-03 02:28:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2022-11-03 02:28:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2022-11-03 02:28:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2022-11-03 02:28:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2022-11-03 02:28:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2022-11-03 02:28:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2022-11-03 02:28:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2022-11-03 02:28:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 02:28:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 02:28:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2022-11-03 02:28:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2022-11-03 02:28:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2022-11-03 02:28:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2022-11-03 02:28:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2022-11-03 02:28:40,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2022-11-03 02:28:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:28:40,351 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:28:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:28:40,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:28:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-03 02:28:40,351 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-03 02:28:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2022-11-03 02:28:40,352 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2022-11-03 02:28:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2022-11-03 02:28:40,352 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2022-11-03 02:28:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:28:40,352 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:28:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wx_event_work [2022-11-03 02:28:40,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wx_event_work [2022-11-03 02:28:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hang_check [2022-11-03 02:28:40,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hang_check [2022-11-03 02:28:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:28:40,353 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:28:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:28:40,354 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:28:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rf_kill [2022-11-03 02:28:40,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rf_kill [2022-11-03 02:28:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:28:40,354 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:28:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2022-11-03 02:28:40,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2022-11-03 02:28:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:28:40,355 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:28:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:28:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2022-11-03 02:28:40,355 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2022-11-03 02:28:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:28:40,356 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:28:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2022-11-03 02:28:40,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2022-11-03 02:28:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_address [2022-11-03 02:28:40,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_address [2022-11-03 02:28:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:28:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2022-11-03 02:28:40,357 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2022-11-03 02:28:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2022-11-03 02:28:40,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2022-11-03 02:28:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2022-11-03 02:28:40,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2022-11-03 02:28:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2022-11-03 02:28:40,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2022-11-03 02:28:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 02:28:40,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 02:28:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_7 [2022-11-03 02:28:40,358 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_7 [2022-11-03 02:28:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-03 02:28:40,358 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-03 02:28:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:28:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2022-11-03 02:28:40,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2022-11-03 02:28:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 02:28:40,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 02:28:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2022-11-03 02:28:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2022-11-03 02:28:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2022-11-03 02:28:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2022-11-03 02:28:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:28:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:28:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:28:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:28:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2022-11-03 02:28:40,361 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2022-11-03 02:28:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:28:40,361 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:28:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2022-11-03 02:28:40,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2022-11-03 02:28:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2022-11-03 02:28:40,362 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2022-11-03 02:28:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2022-11-03 02:28:40,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2022-11-03 02:28:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_change_mtu [2022-11-03 02:28:40,362 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_change_mtu [2022-11-03 02:28:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-03 02:28:40,363 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-03 02:28:40,363 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2022-11-03 02:28:40,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2022-11-03 02:28:40,363 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 02:28:40,363 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 02:28:40,363 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-03 02:28:40,364 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-03 02:28:40,364 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2022-11-03 02:28:40,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2022-11-03 02:28:40,364 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2022-11-03 02:28:40,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2022-11-03 02:28:40,364 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2022-11-03 02:28:40,364 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2022-11-03 02:28:40,365 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:28:40,365 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:28:40,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:28:40,365 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-03 02:28:40,365 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-03 02:28:40,365 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2022-11-03 02:28:40,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2022-11-03 02:28:40,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:28:40,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:28:40,366 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2022-11-03 02:28:40,366 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2022-11-03 02:28:40,366 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2022-11-03 02:28:40,366 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2022-11-03 02:28:40,366 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2022-11-03 02:28:40,367 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2022-11-03 02:28:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:28:40,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:28:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_radio_kill_sw [2022-11-03 02:28:40,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_radio_kill_sw [2022-11-03 02:28:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2022-11-03 02:28:40,368 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2022-11-03 02:28:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-03 02:28:40,368 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-03 02:28:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 02:28:40,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 02:28:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 02:28:40,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 02:28:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2022-11-03 02:28:40,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2022-11-03 02:28:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_9 [2022-11-03 02:28:40,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_9 [2022-11-03 02:28:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 02:28:40,369 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 02:28:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 02:28:40,369 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 02:28:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 02:28:40,370 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 02:28:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 02:28:40,370 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 02:28:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2022-11-03 02:28:40,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2022-11-03 02:28:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 02:28:40,371 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 02:28:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2022-11-03 02:28:40,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2022-11-03 02:28:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2022-11-03 02:28:40,371 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2022-11-03 02:28:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:28:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2022-11-03 02:28:40,372 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2022-11-03 02:28:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-03 02:28:40,372 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-03 02:28:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2022-11-03 02:28:40,372 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2022-11-03 02:28:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2022-11-03 02:28:40,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2022-11-03 02:28:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-03 02:28:40,373 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-03 02:28:41,987 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:28:41,991 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:28:57,145 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:31:14,937 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:31:20,125 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:31:20,125 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:31:20,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:31:20 BoogieIcfgContainer [2022-11-03 02:31:20,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:31:20,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:31:20,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:31:20,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:31:20,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:28:30" (1/3) ... [2022-11-03 02:31:20,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c686c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:31:20, skipping insertion in model container [2022-11-03 02:31:20,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:38" (2/3) ... [2022-11-03 02:31:20,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c686c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:31:20, skipping insertion in model container [2022-11-03 02:31:20,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:31:20" (3/3) ... [2022-11-03 02:31:20,145 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i [2022-11-03 02:31:20,168 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:31:20,168 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:31:20,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:31:20,309 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;@3639a695, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:31:20,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:31:20,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 3075 states, 1980 states have (on average 1.3803030303030304) internal successors, (2733), 2029 states have internal predecessors, (2733), 936 states have call successors, (936), 158 states have call predecessors, (936), 157 states have return successors, (907), 904 states have call predecessors, (907), 907 states have call successors, (907) [2022-11-03 02:31:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2022-11-03 02:31:20,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:31:20,417 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 8, 8, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:31:20,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:31:20,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:31:20,424 INFO L85 PathProgramCache]: Analyzing trace with hash -532365865, now seen corresponding path program 1 times [2022-11-03 02:31:20,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:31:20,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398204662] [2022-11-03 02:31:20,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:20,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:31:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 10078 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10078 trivial. 0 not checked. [2022-11-03 02:31:23,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:31:23,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398204662] [2022-11-03 02:31:23,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398204662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:31:23,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:31:23,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:31:23,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845716053] [2022-11-03 02:31:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:31:23,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:31:23,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:31:23,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:31:23,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:31:23,625 INFO L87 Difference]: Start difference. First operand has 3075 states, 1980 states have (on average 1.3803030303030304) internal successors, (2733), 2029 states have internal predecessors, (2733), 936 states have call successors, (936), 158 states have call predecessors, (936), 157 states have return successors, (907), 904 states have call predecessors, (907), 907 states have call successors, (907) Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-03 02:31:25,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:29,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:32,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:34,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:37,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:31:39,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:31:41,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:43,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:31:45,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:47,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:49,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:54,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:58,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:00,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:03,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:03,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:03,238 INFO L93 Difference]: Finished difference Result 7988 states and 11954 transitions. [2022-11-03 02:32:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:32:03,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 702 [2022-11-03 02:32:03,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:03,306 INFO L225 Difference]: With dead ends: 7988 [2022-11-03 02:32:03,307 INFO L226 Difference]: Without dead ends: 4956 [2022-11-03 02:32:03,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:03,331 INFO L413 NwaCegarLoop]: 4773 mSDtfsCounter, 2881 mSDsluCounter, 4508 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 5 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2887 SdHoareTripleChecker+Valid, 8841 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:03,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2887 Valid, 8841 Invalid, 974 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 956 Invalid, 13 Unknown, 0 Unchecked, 39.1s Time] [2022-11-03 02:32:03,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2022-11-03 02:32:03,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4948. [2022-11-03 02:32:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 3260 states have (on average 1.3757668711656441) internal successors, (4485), 3292 states have internal predecessors, (4485), 1432 states have call successors, (1432), 257 states have call predecessors, (1432), 255 states have return successors, (1434), 1423 states have call predecessors, (1434), 1431 states have call successors, (1434) [2022-11-03 02:32:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 7351 transitions. [2022-11-03 02:32:03,799 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 7351 transitions. Word has length 702 [2022-11-03 02:32:03,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:03,809 INFO L495 AbstractCegarLoop]: Abstraction has 4948 states and 7351 transitions. [2022-11-03 02:32:03,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-03 02:32:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 7351 transitions. [2022-11-03 02:32:03,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2022-11-03 02:32:03,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:03,868 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 8, 8, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:03,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:32:03,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:03,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:03,870 INFO L85 PathProgramCache]: Analyzing trace with hash 586150935, now seen corresponding path program 1 times [2022-11-03 02:32:03,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:03,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908040571] [2022-11-03 02:32:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:03,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10539 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10528 trivial. 0 not checked. [2022-11-03 02:32:06,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:06,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908040571] [2022-11-03 02:32:06,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908040571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:06,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:06,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:32:06,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778255228] [2022-11-03 02:32:06,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:06,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:32:06,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:32:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:06,037 INFO L87 Difference]: Start difference. First operand 4948 states and 7351 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-03 02:32:08,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:12,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:14,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:16,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:18,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:32:20,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:32:22,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:32:24,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:29,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:33,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:37,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:40,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:42,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:42,613 INFO L93 Difference]: Finished difference Result 9788 states and 14542 transitions. [2022-11-03 02:32:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:32:42,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 731 [2022-11-03 02:32:42,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:42,656 INFO L225 Difference]: With dead ends: 9788 [2022-11-03 02:32:42,657 INFO L226 Difference]: Without dead ends: 4948 [2022-11-03 02:32:42,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:42,687 INFO L413 NwaCegarLoop]: 4042 mSDtfsCounter, 0 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 0 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8081 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:42,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8081 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 905 Invalid, 11 Unknown, 0 Unchecked, 36.3s Time] [2022-11-03 02:32:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4948 states. [2022-11-03 02:32:42,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4948 to 4948. [2022-11-03 02:32:42,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 3260 states have (on average 1.3754601226993866) internal successors, (4484), 3292 states have internal predecessors, (4484), 1432 states have call successors, (1432), 257 states have call predecessors, (1432), 255 states have return successors, (1434), 1423 states have call predecessors, (1434), 1431 states have call successors, (1434) [2022-11-03 02:32:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 7350 transitions. [2022-11-03 02:32:42,947 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 7350 transitions. Word has length 731 [2022-11-03 02:32:42,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:42,951 INFO L495 AbstractCegarLoop]: Abstraction has 4948 states and 7350 transitions. [2022-11-03 02:32:42,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-03 02:32:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 7350 transitions. [2022-11-03 02:32:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2022-11-03 02:32:43,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:43,003 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 8, 8, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:43,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:32:43,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1354220637, now seen corresponding path program 1 times [2022-11-03 02:32:43,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:43,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103116740] [2022-11-03 02:32:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:43,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10120 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10102 trivial. 0 not checked. [2022-11-03 02:32:45,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:45,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103116740] [2022-11-03 02:32:45,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103116740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:45,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:45,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:32:45,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917676237] [2022-11-03 02:32:45,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:45,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:32:45,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:45,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:32:45,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:45,098 INFO L87 Difference]: Start difference. First operand 4948 states and 7350 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 02:32:47,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:50,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:52,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:55,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:00,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:33:01,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:06,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:08,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:10,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:12,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:15,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:18,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:21,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:22,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:22,989 INFO L93 Difference]: Finished difference Result 14252 states and 21161 transitions. [2022-11-03 02:33:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:33:22,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 763 [2022-11-03 02:33:22,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:23,056 INFO L225 Difference]: With dead ends: 14252 [2022-11-03 02:33:23,056 INFO L226 Difference]: Without dead ends: 9413 [2022-11-03 02:33:23,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:33:23,087 INFO L413 NwaCegarLoop]: 5402 mSDtfsCounter, 3777 mSDsluCounter, 4486 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3783 SdHoareTripleChecker+Valid, 9437 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:23,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3783 Valid, 9437 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1009 Invalid, 10 Unknown, 0 Unchecked, 37.5s Time] [2022-11-03 02:33:23,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9413 states. [2022-11-03 02:33:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9413 to 9402. [2022-11-03 02:33:23,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9402 states, 6210 states have (on average 1.3789049919484702) internal successors, (8563), 6277 states have internal predecessors, (8563), 2694 states have call successors, (2694), 500 states have call predecessors, (2694), 497 states have return successors, (2703), 2674 states have call predecessors, (2703), 2693 states have call successors, (2703) [2022-11-03 02:33:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9402 states to 9402 states and 13960 transitions. [2022-11-03 02:33:23,560 INFO L78 Accepts]: Start accepts. Automaton has 9402 states and 13960 transitions. Word has length 763 [2022-11-03 02:33:23,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:23,561 INFO L495 AbstractCegarLoop]: Abstraction has 9402 states and 13960 transitions. [2022-11-03 02:33:23,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 02:33:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand 9402 states and 13960 transitions. [2022-11-03 02:33:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2022-11-03 02:33:23,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:23,624 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 8, 8, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:23,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:33:23,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:23,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:23,626 INFO L85 PathProgramCache]: Analyzing trace with hash -466833193, now seen corresponding path program 1 times [2022-11-03 02:33:23,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:23,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433832922] [2022-11-03 02:33:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:23,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15589 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15589 trivial. 0 not checked. [2022-11-03 02:33:26,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:26,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433832922] [2022-11-03 02:33:26,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433832922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:26,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:26,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:33:26,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960045540] [2022-11-03 02:33:26,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:26,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:33:26,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:33:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:33:26,183 INFO L87 Difference]: Start difference. First operand 9402 states and 13960 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2022-11-03 02:33:28,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:31,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:34,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:36,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:39,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:33:40,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:33:42,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:33:48,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:50,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:51,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:53,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:56,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:59,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:01,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:05,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:06,252 INFO L93 Difference]: Finished difference Result 14978 states and 22422 transitions. [2022-11-03 02:34:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:34:06,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 851 [2022-11-03 02:34:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:06,351 INFO L225 Difference]: With dead ends: 14978 [2022-11-03 02:34:06,352 INFO L226 Difference]: Without dead ends: 14975 [2022-11-03 02:34:06,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:34:06,360 INFO L413 NwaCegarLoop]: 5217 mSDtfsCounter, 3844 mSDsluCounter, 3268 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3844 SdHoareTripleChecker+Valid, 8135 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:06,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3844 Valid, 8135 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 908 Invalid, 13 Unknown, 0 Unchecked, 39.7s Time] [2022-11-03 02:34:06,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14975 states. [2022-11-03 02:34:07,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14975 to 14836. [2022-11-03 02:34:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14836 states, 9948 states have (on average 1.3927422597507038) internal successors, (13855), 10095 states have internal predecessors, (13855), 4030 states have call successors, (4030), 880 states have call predecessors, (4030), 857 states have return successors, (4269), 3942 states have call predecessors, (4269), 4029 states have call successors, (4269) [2022-11-03 02:34:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14836 states to 14836 states and 22154 transitions. [2022-11-03 02:34:07,195 INFO L78 Accepts]: Start accepts. Automaton has 14836 states and 22154 transitions. Word has length 851 [2022-11-03 02:34:07,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:07,196 INFO L495 AbstractCegarLoop]: Abstraction has 14836 states and 22154 transitions. [2022-11-03 02:34:07,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2022-11-03 02:34:07,197 INFO L276 IsEmpty]: Start isEmpty. Operand 14836 states and 22154 transitions. [2022-11-03 02:34:07,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2022-11-03 02:34:07,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:07,303 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 8, 8, 7, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:07,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:34:07,304 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:07,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:07,304 INFO L85 PathProgramCache]: Analyzing trace with hash 151047073, now seen corresponding path program 1 times [2022-11-03 02:34:07,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:34:07,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107122220] [2022-11-03 02:34:07,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:07,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:34:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15654 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15654 trivial. 0 not checked. [2022-11-03 02:34:09,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:34:09,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107122220] [2022-11-03 02:34:09,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107122220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:09,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:09,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:34:09,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67204012] [2022-11-03 02:34:09,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:09,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:34:09,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:34:09,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:34:09,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:34:09,934 INFO L87 Difference]: Start difference. First operand 14836 states and 22154 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2022-11-03 02:34:12,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:15,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:18,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:20,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:21,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:34:22,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:34:25,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:34:27,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:31,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:33,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:35,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:37,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:39,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:42,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:45,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:48,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:50,020 INFO L93 Difference]: Finished difference Result 20224 states and 30324 transitions. [2022-11-03 02:34:50,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:34:50,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) Word has length 921 [2022-11-03 02:34:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:50,141 INFO L225 Difference]: With dead ends: 20224 [2022-11-03 02:34:50,142 INFO L226 Difference]: Without dead ends: 20221 [2022-11-03 02:34:50,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:34:50,153 INFO L413 NwaCegarLoop]: 5243 mSDtfsCounter, 3841 mSDsluCounter, 3267 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 1 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3841 SdHoareTripleChecker+Valid, 8161 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:50,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3841 Valid, 8161 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 917 Invalid, 12 Unknown, 0 Unchecked, 39.5s Time] [2022-11-03 02:34:50,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20221 states. [2022-11-03 02:34:51,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20221 to 20076. [2022-11-03 02:34:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20076 states, 13553 states have (on average 1.400427949531469) internal successors, (18980), 13797 states have internal predecessors, (18980), 5329 states have call successors, (5329), 1242 states have call predecessors, (5329), 1193 states have return successors, (5741), 5146 states have call predecessors, (5741), 5328 states have call successors, (5741) [2022-11-03 02:34:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20076 states to 20076 states and 30050 transitions. [2022-11-03 02:34:51,196 INFO L78 Accepts]: Start accepts. Automaton has 20076 states and 30050 transitions. Word has length 921 [2022-11-03 02:34:51,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:51,197 INFO L495 AbstractCegarLoop]: Abstraction has 20076 states and 30050 transitions. [2022-11-03 02:34:51,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2022-11-03 02:34:51,198 INFO L276 IsEmpty]: Start isEmpty. Operand 20076 states and 30050 transitions. [2022-11-03 02:34:51,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2022-11-03 02:34:51,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:51,294 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 9, 9, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:51,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:34:51,294 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:51,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:51,295 INFO L85 PathProgramCache]: Analyzing trace with hash 271973708, now seen corresponding path program 1 times [2022-11-03 02:34:51,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:34:51,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940719726] [2022-11-03 02:34:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:51,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:34:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 15647 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 15619 trivial. 0 not checked. [2022-11-03 02:34:55,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:34:55,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940719726] [2022-11-03 02:34:55,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940719726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:55,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:55,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:34:55,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353000381] [2022-11-03 02:34:55,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:55,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:34:55,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:34:55,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:34:55,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:34:55,484 INFO L87 Difference]: Start difference. First operand 20076 states and 30050 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 3 states have call successors, (86), 2 states have call predecessors, (86), 3 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2022-11-03 02:34:57,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:01,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:04,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:06,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:09,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:11,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:35:16,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:35:21,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:27,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:29,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:31,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:34,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:37,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:40,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:44,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:45,807 INFO L93 Difference]: Finished difference Result 40476 states and 61011 transitions. [2022-11-03 02:35:45,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:35:45,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 3 states have call successors, (86), 2 states have call predecessors, (86), 3 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) Word has length 928 [2022-11-03 02:35:45,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:45,918 INFO L225 Difference]: With dead ends: 40476 [2022-11-03 02:35:45,918 INFO L226 Difference]: Without dead ends: 20350 [2022-11-03 02:35:46,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:35:46,004 INFO L413 NwaCegarLoop]: 4057 mSDtfsCounter, 118 mSDsluCounter, 8949 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 15 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 12105 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:46,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 12105 Invalid, 1414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 1386 Invalid, 13 Unknown, 0 Unchecked, 49.5s Time] [2022-11-03 02:35:46,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20350 states. [2022-11-03 02:35:46,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20350 to 20308. [2022-11-03 02:35:47,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20308 states, 13728 states have (on average 1.3989656177156178) internal successors, (19205), 13978 states have internal predecessors, (19205), 5381 states have call successors, (5381), 1242 states have call predecessors, (5381), 1198 states have return successors, (5825), 5197 states have call predecessors, (5825), 5380 states have call successors, (5825) [2022-11-03 02:35:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20308 states to 20308 states and 30411 transitions. [2022-11-03 02:35:47,285 INFO L78 Accepts]: Start accepts. Automaton has 20308 states and 30411 transitions. Word has length 928 [2022-11-03 02:35:47,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:47,286 INFO L495 AbstractCegarLoop]: Abstraction has 20308 states and 30411 transitions. [2022-11-03 02:35:47,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 3 states have call successors, (86), 2 states have call predecessors, (86), 3 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2022-11-03 02:35:47,287 INFO L276 IsEmpty]: Start isEmpty. Operand 20308 states and 30411 transitions. [2022-11-03 02:35:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2022-11-03 02:35:47,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:47,383 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 9, 9, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:47,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:35:47,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:47,384 INFO L85 PathProgramCache]: Analyzing trace with hash 630179687, now seen corresponding path program 1 times [2022-11-03 02:35:47,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:47,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894576728] [2022-11-03 02:35:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:47,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 15659 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 15620 trivial. 0 not checked. [2022-11-03 02:35:52,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:52,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894576728] [2022-11-03 02:35:52,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894576728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:35:52,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102385010] [2022-11-03 02:35:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:52,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:52,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:52,388 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:52,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:35:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:59,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 25399 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:35:59,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:59,892 INFO L134 CoverageAnalysis]: Checked inductivity of 15659 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 15607 trivial. 0 not checked. [2022-11-03 02:35:59,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:59,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102385010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:59,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:35:59,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-03 02:35:59,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781259507] [2022-11-03 02:35:59,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:59,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:35:59,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:59,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:35:59,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:59,897 INFO L87 Difference]: Start difference. First operand 20308 states and 30411 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 3 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (83), 3 states have call predecessors, (83), 3 states have call successors, (83) [2022-11-03 02:36:02,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:05,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:08,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:10,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:12,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:36:16,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:36:19,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:21,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:25,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:27,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:29,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:31,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:34,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:37,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:41,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:42,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:42,484 INFO L93 Difference]: Finished difference Result 40602 states and 61131 transitions. [2022-11-03 02:36:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:36:42,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 3 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (83), 3 states have call predecessors, (83), 3 states have call successors, (83) Word has length 935 [2022-11-03 02:36:42,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:42,648 INFO L225 Difference]: With dead ends: 40602 [2022-11-03 02:36:42,648 INFO L226 Difference]: Without dead ends: 20403 [2022-11-03 02:36:42,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 937 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:36:42,773 INFO L413 NwaCegarLoop]: 4083 mSDtfsCounter, 42 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 8122 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:42,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 8122 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 908 Invalid, 13 Unknown, 0 Unchecked, 41.8s Time] [2022-11-03 02:36:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20403 states. [2022-11-03 02:36:44,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20403 to 20375. [2022-11-03 02:36:44,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20375 states, 13777 states have (on average 1.398853161065544) internal successors, (19272), 14032 states have internal predecessors, (19272), 5395 states have call successors, (5395), 1242 states have call predecessors, (5395), 1202 states have return successors, (5846), 5210 states have call predecessors, (5846), 5394 states have call successors, (5846) [2022-11-03 02:36:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20375 states to 20375 states and 30513 transitions. [2022-11-03 02:36:44,483 INFO L78 Accepts]: Start accepts. Automaton has 20375 states and 30513 transitions. Word has length 935 [2022-11-03 02:36:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:44,485 INFO L495 AbstractCegarLoop]: Abstraction has 20375 states and 30513 transitions. [2022-11-03 02:36:44,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 3 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (83), 3 states have call predecessors, (83), 3 states have call successors, (83) [2022-11-03 02:36:44,486 INFO L276 IsEmpty]: Start isEmpty. Operand 20375 states and 30513 transitions. [2022-11-03 02:36:44,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2022-11-03 02:36:44,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:44,654 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 9, 9, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:44,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:44,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:44,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:44,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:44,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1731535294, now seen corresponding path program 1 times [2022-11-03 02:36:44,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:44,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873114671] [2022-11-03 02:36:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:44,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 15659 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 15620 trivial. 0 not checked. [2022-11-03 02:36:50,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:50,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873114671] [2022-11-03 02:36:50,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873114671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:36:50,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469303524] [2022-11-03 02:36:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:50,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:50,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:50,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:50,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:36:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:58,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 26541 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:36:58,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15659 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 15595 trivial. 0 not checked. [2022-11-03 02:36:59,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:59,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469303524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:59,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:36:59,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-03 02:36:59,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738702160] [2022-11-03 02:36:59,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:59,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:36:59,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:59,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:36:59,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:36:59,145 INFO L87 Difference]: Start difference. First operand 20375 states and 30513 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 4 states have call successors, (88), 2 states have call predecessors, (88), 3 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2022-11-03 02:37:01,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:04,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:08,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:10,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:12,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:15,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:37:17,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:37:19,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:37:21,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:37:26,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:31,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:33,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:35,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:39,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:41,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:46,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:47,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:47,590 INFO L93 Difference]: Finished difference Result 40322 states and 60755 transitions. [2022-11-03 02:37:47,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:37:47,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 4 states have call successors, (88), 2 states have call predecessors, (88), 3 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) Word has length 943 [2022-11-03 02:37:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:47,734 INFO L225 Difference]: With dead ends: 40322 [2022-11-03 02:37:47,735 INFO L226 Difference]: Without dead ends: 19964 [2022-11-03 02:37:47,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 944 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:47,866 INFO L413 NwaCegarLoop]: 4040 mSDtfsCounter, 18 mSDsluCounter, 8942 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 7 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12082 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:47,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12082 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1370 Invalid, 14 Unknown, 0 Unchecked, 47.6s Time] [2022-11-03 02:37:47,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19964 states. [2022-11-03 02:37:49,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19964 to 19964. [2022-11-03 02:37:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19964 states, 13470 states have (on average 1.3976243504083148) internal successors, (18826), 13735 states have internal predecessors, (18826), 5304 states have call successors, (5304), 1238 states have call predecessors, (5304), 1189 states have return successors, (5697), 5100 states have call predecessors, (5697), 5303 states have call successors, (5697) [2022-11-03 02:37:49,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19964 states to 19964 states and 29827 transitions. [2022-11-03 02:37:49,250 INFO L78 Accepts]: Start accepts. Automaton has 19964 states and 29827 transitions. Word has length 943 [2022-11-03 02:37:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:49,251 INFO L495 AbstractCegarLoop]: Abstraction has 19964 states and 29827 transitions. [2022-11-03 02:37:49,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 4 states have call successors, (88), 2 states have call predecessors, (88), 3 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2022-11-03 02:37:49,252 INFO L276 IsEmpty]: Start isEmpty. Operand 19964 states and 29827 transitions. [2022-11-03 02:37:49,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 938 [2022-11-03 02:37:49,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:49,353 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 9, 9, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:49,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:49,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:49,579 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:49,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash 596367792, now seen corresponding path program 1 times [2022-11-03 02:37:49,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:49,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486022289] [2022-11-03 02:37:49,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:49,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 15646 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 15617 trivial. 0 not checked. [2022-11-03 02:37:52,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:52,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486022289] [2022-11-03 02:37:52,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486022289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:52,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:52,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:37:52,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715600590] [2022-11-03 02:37:52,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:52,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:37:52,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:52,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:37:52,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:37:52,999 INFO L87 Difference]: Start difference. First operand 19964 states and 29827 transitions. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 4 states have internal predecessors, (206), 2 states have call successors, (90), 2 states have call predecessors, (90), 3 states have return successors, (86), 3 states have call predecessors, (86), 2 states have call successors, (86) [2022-11-03 02:37:55,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:00,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:03,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:05,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:08,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:38:10,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:38:11,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:38:13,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:38:14,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:38:16,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:38:22,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:23,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:30,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:32,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:34,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:36,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:39,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:42,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:45,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:50,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:51,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:51,530 INFO L93 Difference]: Finished difference Result 39820 states and 59711 transitions. [2022-11-03 02:38:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:38:51,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 4 states have internal predecessors, (206), 2 states have call successors, (90), 2 states have call predecessors, (90), 3 states have return successors, (86), 3 states have call predecessors, (86), 2 states have call successors, (86) Word has length 937 [2022-11-03 02:38:51,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:51,709 INFO L225 Difference]: With dead ends: 39820 [2022-11-03 02:38:51,710 INFO L226 Difference]: Without dead ends: 19965 [2022-11-03 02:38:51,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:38:51,788 INFO L413 NwaCegarLoop]: 4044 mSDtfsCounter, 12 mSDsluCounter, 13459 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 2 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 16144 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:51,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 16144 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1841 Invalid, 15 Unknown, 0 Unchecked, 57.9s Time] [2022-11-03 02:38:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19965 states. [2022-11-03 02:38:52,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19965 to 19954. [2022-11-03 02:38:52,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19954 states, 13462 states have (on average 1.3977120784430248) internal successors, (18816), 13735 states have internal predecessors, (18816), 5299 states have call successors, (5299), 1238 states have call predecessors, (5299), 1192 states have return successors, (5666), 5086 states have call predecessors, (5666), 5298 states have call successors, (5666) [2022-11-03 02:38:52,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19954 states to 19954 states and 29781 transitions. [2022-11-03 02:38:52,688 INFO L78 Accepts]: Start accepts. Automaton has 19954 states and 29781 transitions. Word has length 937 [2022-11-03 02:38:52,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:52,689 INFO L495 AbstractCegarLoop]: Abstraction has 19954 states and 29781 transitions. [2022-11-03 02:38:52,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 4 states have internal predecessors, (206), 2 states have call successors, (90), 2 states have call predecessors, (90), 3 states have return successors, (86), 3 states have call predecessors, (86), 2 states have call successors, (86) [2022-11-03 02:38:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 19954 states and 29781 transitions. [2022-11-03 02:38:52,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2022-11-03 02:38:52,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:52,782 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 9, 9, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:52,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:38:52,782 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:52,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1975665479, now seen corresponding path program 1 times [2022-11-03 02:38:52,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:52,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508935073] [2022-11-03 02:38:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:52,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 15647 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 15608 trivial. 0 not checked. [2022-11-03 02:38:56,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:56,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508935073] [2022-11-03 02:38:56,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508935073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:56,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341539718] [2022-11-03 02:38:56,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:56,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:56,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:56,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:56,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:39:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:05,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 25616 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:39:05,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:39:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 15647 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 15589 trivial. 0 not checked. [2022-11-03 02:39:05,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:39:05,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341539718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:05,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:39:05,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2022-11-03 02:39:05,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302992287] [2022-11-03 02:39:05,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:05,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:39:05,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:39:05,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:39:05,757 INFO L87 Difference]: Start difference. First operand 19954 states and 29781 transitions. Second operand has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 7 states have internal predecessors, (235), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (88), 5 states have call predecessors, (88), 3 states have call successors, (88) [2022-11-03 02:39:08,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:11,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:15,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:20,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:23,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:26,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:27,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:39:29,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:39:31,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:39:38,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:39:44,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:47,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:49,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:50,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:59,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:02,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:04,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:09,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:11,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:18,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:20,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:21,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:21,927 INFO L93 Difference]: Finished difference Result 39887 states and 60063 transitions. [2022-11-03 02:40:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:40:21,928 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 7 states have internal predecessors, (235), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (88), 5 states have call predecessors, (88), 3 states have call successors, (88) Word has length 966 [2022-11-03 02:40:21,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:22,016 INFO L225 Difference]: With dead ends: 39887 [2022-11-03 02:40:22,016 INFO L226 Difference]: Without dead ends: 20036 [2022-11-03 02:40:22,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 973 GetRequests, 962 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:40:22,098 INFO L413 NwaCegarLoop]: 4036 mSDtfsCounter, 10 mSDsluCounter, 31356 mSDsCounter, 0 mSdLazyCounter, 3691 mSolverCounterSat, 4 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32236 SdHoareTripleChecker+Invalid, 3711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3691 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:22,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 32236 Invalid, 3711 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 3691 Invalid, 16 Unknown, 0 Unchecked, 75.3s Time] [2022-11-03 02:40:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20036 states. [2022-11-03 02:40:22,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20036 to 20000. [2022-11-03 02:40:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20000 states, 13496 states have (on average 1.3967101363366923) internal successors, (18850), 13768 states have internal predecessors, (18850), 5303 states have call successors, (5303), 1238 states have call predecessors, (5303), 1200 states have return successors, (5813), 5099 states have call predecessors, (5813), 5302 states have call successors, (5813) [2022-11-03 02:40:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20000 states to 20000 states and 29966 transitions. [2022-11-03 02:40:22,953 INFO L78 Accepts]: Start accepts. Automaton has 20000 states and 29966 transitions. Word has length 966 [2022-11-03 02:40:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:22,954 INFO L495 AbstractCegarLoop]: Abstraction has 20000 states and 29966 transitions. [2022-11-03 02:40:22,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 7 states have internal predecessors, (235), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (88), 5 states have call predecessors, (88), 3 states have call successors, (88) [2022-11-03 02:40:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 20000 states and 29966 transitions. [2022-11-03 02:40:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2022-11-03 02:40:23,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:23,185 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 9, 9, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:40:23,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-03 02:40:23,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:40:23,386 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:23,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:23,387 INFO L85 PathProgramCache]: Analyzing trace with hash -548873412, now seen corresponding path program 1 times [2022-11-03 02:40:23,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:23,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827766616] [2022-11-03 02:40:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:23,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 15647 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 15608 trivial. 0 not checked. [2022-11-03 02:40:26,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:26,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827766616] [2022-11-03 02:40:26,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827766616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:40:26,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396427804] [2022-11-03 02:40:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:26,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:40:26,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:40:26,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:40:26,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:40:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:35,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 25612 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:40:35,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:40:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 15647 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 15589 trivial. 0 not checked. [2022-11-03 02:40:35,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:40:35,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396427804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:35,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:40:35,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2022-11-03 02:40:35,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4037413] [2022-11-03 02:40:35,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:35,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:40:35,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:40:35,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:40:35,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:40:35,717 INFO L87 Difference]: Start difference. First operand 20000 states and 29966 transitions. Second operand has 9 states, 9 states have (on average 26.0) internal successors, (234), 7 states have internal predecessors, (234), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (88), 5 states have call predecessors, (88), 3 states have call successors, (88) [2022-11-03 02:40:37,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:41,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:47,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:50,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:53,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:56,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:40:58,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:40:59,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:01,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:03,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:05,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:08,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:10,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:12,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:16,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:23,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:25,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:27,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:29,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:31,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:39,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:42,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:44,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:49,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:51,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:58,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:01,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:01,698 INFO L93 Difference]: Finished difference Result 39943 states and 60247 transitions. [2022-11-03 02:42:01,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:42:01,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.0) internal successors, (234), 7 states have internal predecessors, (234), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (88), 5 states have call predecessors, (88), 3 states have call successors, (88) Word has length 965 [2022-11-03 02:42:01,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:01,783 INFO L225 Difference]: With dead ends: 39943 [2022-11-03 02:42:01,783 INFO L226 Difference]: Without dead ends: 20046 [2022-11-03 02:42:01,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 961 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:42:01,982 INFO L413 NwaCegarLoop]: 4037 mSDtfsCounter, 10 mSDsluCounter, 31370 mSDsCounter, 0 mSdLazyCounter, 3693 mSolverCounterSat, 4 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32244 SdHoareTripleChecker+Invalid, 3718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3693 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:01,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 32244 Invalid, 3718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 3693 Invalid, 21 Unknown, 0 Unchecked, 85.2s Time] [2022-11-03 02:42:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20046 states. [2022-11-03 02:42:02,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20046 to 20005. [2022-11-03 02:42:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20005 states, 13501 states have (on average 1.3965632175394416) internal successors, (18855), 13768 states have internal predecessors, (18855), 5303 states have call successors, (5303), 1238 states have call predecessors, (5303), 1200 states have return successors, (5802), 5104 states have call predecessors, (5802), 5302 states have call successors, (5802) [2022-11-03 02:42:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20005 states to 20005 states and 29960 transitions. [2022-11-03 02:42:02,712 INFO L78 Accepts]: Start accepts. Automaton has 20005 states and 29960 transitions. Word has length 965 [2022-11-03 02:42:02,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:02,714 INFO L495 AbstractCegarLoop]: Abstraction has 20005 states and 29960 transitions. [2022-11-03 02:42:02,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.0) internal successors, (234), 7 states have internal predecessors, (234), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (88), 5 states have call predecessors, (88), 3 states have call successors, (88) [2022-11-03 02:42:02,714 INFO L276 IsEmpty]: Start isEmpty. Operand 20005 states and 29960 transitions. [2022-11-03 02:42:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2022-11-03 02:42:02,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:02,783 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 9, 9, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:02,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-03 02:42:02,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 02:42:02,984 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:02,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:02,985 INFO L85 PathProgramCache]: Analyzing trace with hash 329225683, now seen corresponding path program 1 times [2022-11-03 02:42:02,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:02,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009315517] [2022-11-03 02:42:02,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:02,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:42:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15647 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 15608 trivial. 0 not checked. [2022-11-03 02:42:06,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:42:06,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009315517] [2022-11-03 02:42:06,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009315517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:42:06,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114973636] [2022-11-03 02:42:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:06,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:06,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:42:06,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:42:06,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906b247c-03e1-4391-9751-258ebdeccd2e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process