./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P --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 6150b3a515973ce4119efed812e463608b94129eea9915abf4784f091ce6f187 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:13:52,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:13:52,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:13:52,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:13:52,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:13:52,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:13:52,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:13:52,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:13:52,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:13:52,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:13:52,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:13:52,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:13:52,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:13:52,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:13:52,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:13:52,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:13:52,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:13:52,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:13:52,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:13:52,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:13:52,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:13:52,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:13:52,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:13:52,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:13:52,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:13:52,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:13:52,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:13:52,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:13:52,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:13:52,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:13:52,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:13:52,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:13:52,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:13:52,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:13:52,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:13:52,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:13:52,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:13:52,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:13:52,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:13:52,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:13:52,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:13:52,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:13:52,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:13:52,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:13:52,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:13:52,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:13:52,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:13:52,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:13:52,784 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:13:52,784 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:13:52,784 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:13:52,784 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:13:52,785 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:13:52,785 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:13:52,785 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:13:52,786 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:13:52,786 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:13:52,786 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:13:52,787 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:13:52,787 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:13:52,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:13:52,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:13:52,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:13:52,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:13:52,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:13:52,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:13:52,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:13:52,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:13:52,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:13:52,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:13:52,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:13:52,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:52,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:13:52,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:13:52,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:13:52,793 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:13:52,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:13:52,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:13:52,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:13:52,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:13:52,794 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6150b3a515973ce4119efed812e463608b94129eea9915abf4784f091ce6f187 [2021-11-20 23:13:53,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:13:53,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:13:53,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:13:53,168 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:13:53,169 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:13:53,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-20 23:13:53,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/data/9d558521b/615a396d6e7b4b7093de038eff5afe5a/FLAG8ffbcda70 [2021-11-20 23:13:54,173 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:13:54,175 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-20 23:13:54,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/data/9d558521b/615a396d6e7b4b7093de038eff5afe5a/FLAG8ffbcda70 [2021-11-20 23:13:54,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/data/9d558521b/615a396d6e7b4b7093de038eff5afe5a [2021-11-20 23:13:54,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:13:54,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:13:54,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:54,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:13:54,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:13:54,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:54" (1/1) ... [2021-11-20 23:13:54,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6062f8bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:54, skipping insertion in model container [2021-11-20 23:13:54,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:54" (1/1) ... [2021-11-20 23:13:54,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:13:54,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:13:56,673 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_c2e9f70b-4389-440a-9732-48cc811d6151/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[238462,238475] [2021-11-20 23:13:56,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:56,770 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:13:57,242 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_c2e9f70b-4389-440a-9732-48cc811d6151/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[238462,238475] [2021-11-20 23:13:57,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:57,420 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:13:57,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:57 WrapperNode [2021-11-20 23:13:57,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:57,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:57,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:13:57,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:13:57,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:57" (1/1) ... [2021-11-20 23:13:57,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:57" (1/1) ... [2021-11-20 23:13:57,730 INFO L137 Inliner]: procedures = 258, calls = 1803, calls flagged for inlining = 103, calls inlined = 99, statements flattened = 4499 [2021-11-20 23:13:57,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:57,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:13:57,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:13:57,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:13:57,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:57" (1/1) ... [2021-11-20 23:13:57,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:57" (1/1) ... [2021-11-20 23:13:57,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:57" (1/1) ... [2021-11-20 23:13:57,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:57" (1/1) ... [2021-11-20 23:13:57,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:57" (1/1) ... [2021-11-20 23:13:58,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:57" (1/1) ... [2021-11-20 23:13:58,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:57" (1/1) ... [2021-11-20 23:13:58,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:13:58,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:13:58,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:13:58,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:13:58,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:57" (1/1) ... [2021-11-20 23:13:58,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:58,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:13:58,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:13:58,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:13:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 23:13:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 23:13:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2021-11-20 23:13:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2021-11-20 23:13:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:13:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:13:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:13:58,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:13:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:13:58,174 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:13:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_delete [2021-11-20 23:13:58,175 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_delete [2021-11-20 23:13:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_wait [2021-11-20 23:13:58,175 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_wait [2021-11-20 23:13:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2021-11-20 23:13:58,175 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2021-11-20 23:13:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-20 23:13:58,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-20 23:13:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-20 23:13:58,176 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-20 23:13:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:13:58,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:13:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-11-20 23:13:58,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-11-20 23:13:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-20 23:13:58,177 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-20 23:13:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2021-11-20 23:13:58,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2021-11-20 23:13:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_50 [2021-11-20 23:13:58,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_50 [2021-11-20 23:13:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 23:13:58,179 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 23:13:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 23:13:58,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 23:13:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:13:58,179 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:13:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:13:58,180 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:13:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_detect_change [2021-11-20 23:13:58,180 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_detect_change [2021-11-20 23:13:58,181 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-20 23:13:58,181 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-20 23:13:58,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_cancel [2021-11-20 23:13:58,181 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_cancel [2021-11-20 23:13:58,181 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-20 23:13:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-20 23:13:58,182 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_init [2021-11-20 23:13:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_init [2021-11-20 23:13:58,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-20 23:13:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-20 23:13:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2021-11-20 23:13:58,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2021-11-20 23:13:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:13:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-20 23:13:58,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-20 23:13:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:13:58,185 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:13:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-11-20 23:13:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-11-20 23:13:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:13:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2021-11-20 23:13:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2021-11-20 23:13:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-20 23:13:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-20 23:13:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2021-11-20 23:13:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2021-11-20 23:13:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_disconnect [2021-11-20 23:13:58,188 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_disconnect [2021-11-20 23:13:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2021-11-20 23:13:58,188 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2021-11-20 23:13:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2021-11-20 23:13:58,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2021-11-20 23:13:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:13:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:13:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-20 23:13:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-20 23:13:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 23:13:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 23:13:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2021-11-20 23:13:58,191 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2021-11-20 23:13:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-20 23:13:58,191 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-20 23:13:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-20 23:13:58,192 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-20 23:13:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure add_offloaded_reg [2021-11-20 23:13:58,192 INFO L138 BoogieDeclarations]: Found implementation of procedure add_offloaded_reg [2021-11-20 23:13:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-20 23:13:58,193 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-20 23:13:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2021-11-20 23:13:58,194 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2021-11-20 23:13:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure roundup_to_multiple_of_64 [2021-11-20 23:13:58,194 INFO L138 BoogieDeclarations]: Found implementation of procedure roundup_to_multiple_of_64 [2021-11-20 23:13:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-20 23:13:58,195 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-20 23:13:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:13:58,196 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2021-11-20 23:13:58,196 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2021-11-20 23:13:58,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:13:58,197 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2021-11-20 23:13:58,197 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2021-11-20 23:13:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-20 23:13:58,198 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-20 23:13:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-11-20 23:13:58,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-11-20 23:13:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:13:58,199 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-11-20 23:13:58,199 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-11-20 23:13:58,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:13:58,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:13:58,200 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-20 23:13:58,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-20 23:13:58,201 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2021-11-20 23:13:58,204 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2021-11-20 23:13:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-20 23:13:58,205 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-20 23:13:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:13:58,207 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:13:58,208 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-20 23:13:58,208 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-20 23:13:58,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:13:58,208 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_response_error [2021-11-20 23:13:58,214 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_response_error [2021-11-20 23:13:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2021-11-20 23:13:58,215 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2021-11-20 23:13:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_free_host [2021-11-20 23:13:58,215 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_free_host [2021-11-20 23:13:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:13:58,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:13:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2021-11-20 23:13:58,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2021-11-20 23:13:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-20 23:13:58,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-20 23:13:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:13:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_queue_poll_work [2021-11-20 23:13:58,217 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_queue_poll_work [2021-11-20 23:13:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2021-11-20 23:13:58,217 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2021-11-20 23:13:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-20 23:13:58,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-20 23:13:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-20 23:13:58,218 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-20 23:13:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2021-11-20 23:13:58,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2021-11-20 23:13:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:13:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_to_buffer [2021-11-20 23:13:58,218 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_to_buffer [2021-11-20 23:13:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_9 [2021-11-20 23:13:58,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_9 [2021-11-20 23:13:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:13:58,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:13:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:13:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure __download_offload_pseudocode [2021-11-20 23:13:58,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __download_offload_pseudocode [2021-11-20 23:13:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:13:58,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:13:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_4 [2021-11-20 23:13:58,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_4 [2021-11-20 23:13:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2021-11-20 23:13:58,221 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2021-11-20 23:13:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_InterfaceNumber [2021-11-20 23:13:58,221 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_InterfaceNumber [2021-11-20 23:13:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-20 23:13:58,221 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-20 23:13:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-20 23:13:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-20 23:13:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2021-11-20 23:13:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2021-11-20 23:13:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2021-11-20 23:13:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2021-11-20 23:13:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure new_system_port_status [2021-11-20 23:13:58,223 INFO L138 BoogieDeclarations]: Found implementation of procedure new_system_port_status [2021-11-20 23:13:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_request_done [2021-11-20 23:13:58,223 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_request_done [2021-11-20 23:13:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-20 23:13:58,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-20 23:13:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-20 23:13:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-20 23:13:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2021-11-20 23:13:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2021-11-20 23:13:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-11-20 23:13:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-11-20 23:13:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-20 23:13:58,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-20 23:13:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-20 23:13:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_47 [2021-11-20 23:13:58,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_47 [2021-11-20 23:13:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-11-20 23:13:58,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-11-20 23:13:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:13:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2021-11-20 23:13:58,226 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2021-11-20 23:13:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_priv [2021-11-20 23:13:58,227 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_priv [2021-11-20 23:13:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-20 23:13:58,227 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-20 23:13:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_deadwork_thread [2021-11-20 23:13:58,227 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_deadwork_thread [2021-11-20 23:13:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure check_vub300_port_status [2021-11-20 23:13:58,228 INFO L138 BoogieDeclarations]: Found implementation of procedure check_vub300_port_status [2021-11-20 23:13:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-20 23:13:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:13:58,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:13:58,988 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:13:59,004 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:14:00,464 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:14:04,329 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:14:06,009 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:14:06,009 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:14:06,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:06 BoogieIcfgContainer [2021-11-20 23:14:06,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:14:06,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:14:06,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:14:06,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:14:06,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:13:54" (1/3) ... [2021-11-20 23:14:06,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee3966f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:14:06, skipping insertion in model container [2021-11-20 23:14:06,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:57" (2/3) ... [2021-11-20 23:14:06,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee3966f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:14:06, skipping insertion in model container [2021-11-20 23:14:06,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:06" (3/3) ... [2021-11-20 23:14:06,023 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-20 23:14:06,029 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:14:06,029 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:14:06,088 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:14:06,096 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:14:06,096 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:14:06,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 1214 states, 746 states have (on average 1.3941018766756033) internal successors, (1040), 811 states have internal predecessors, (1040), 375 states have call successors, (375), 92 states have call predecessors, (375), 91 states have return successors, (366), 340 states have call predecessors, (366), 366 states have call successors, (366) [2021-11-20 23:14:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-20 23:14:06,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:06,190 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:14:06,190 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:14:06,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:06,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1070290393, now seen corresponding path program 1 times [2021-11-20 23:14:06,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:06,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965813253] [2021-11-20 23:14:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:06,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-20 23:14:07,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:07,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965813253] [2021-11-20 23:14:07,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965813253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:07,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:07,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:07,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670366199] [2021-11-20 23:14:07,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:07,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:07,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:07,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:07,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:07,126 INFO L87 Difference]: Start difference. First operand has 1214 states, 746 states have (on average 1.3941018766756033) internal successors, (1040), 811 states have internal predecessors, (1040), 375 states have call successors, (375), 92 states have call predecessors, (375), 91 states have return successors, (366), 340 states have call predecessors, (366), 366 states have call successors, (366) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 23:14:09,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:14:13,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:13,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:13,347 INFO L93 Difference]: Finished difference Result 2266 states and 3363 transitions. [2021-11-20 23:14:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:13,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2021-11-20 23:14:13,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:13,404 INFO L225 Difference]: With dead ends: 2266 [2021-11-20 23:14:13,405 INFO L226 Difference]: Without dead ends: 2228 [2021-11-20 23:14:13,413 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:14:13,417 INFO L933 BasicCegarLoop]: 2036 mSDtfsCounter, 1514 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:13,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 3648 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 348 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-11-20 23:14:13,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-11-20 23:14:13,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2214. [2021-11-20 23:14:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 1379 states have (on average 1.3915881073241478) internal successors, (1919), 1484 states have internal predecessors, (1919), 666 states have call successors, (666), 171 states have call predecessors, (666), 168 states have return successors, (686), 604 states have call predecessors, (686), 661 states have call successors, (686) [2021-11-20 23:14:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3271 transitions. [2021-11-20 23:14:13,688 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3271 transitions. Word has length 88 [2021-11-20 23:14:13,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:13,689 INFO L470 AbstractCegarLoop]: Abstraction has 2214 states and 3271 transitions. [2021-11-20 23:14:13,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 23:14:13,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3271 transitions. [2021-11-20 23:14:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-20 23:14:13,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:13,698 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:14:13,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:14:13,699 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:14:13,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:13,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1181273512, now seen corresponding path program 1 times [2021-11-20 23:14:13,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:13,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135224549] [2021-11-20 23:14:13,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:13,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-20 23:14:14,033 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:14,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135224549] [2021-11-20 23:14:14,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135224549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:14,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:14,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:14,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705509930] [2021-11-20 23:14:14,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:14,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:14,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:14,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:14,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:14,043 INFO L87 Difference]: Start difference. First operand 2214 states and 3271 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 23:14:16,455 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:14:19,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:20,538 INFO L93 Difference]: Finished difference Result 4494 states and 6655 transitions. [2021-11-20 23:14:20,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:20,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2021-11-20 23:14:20,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:20,572 INFO L225 Difference]: With dead ends: 4494 [2021-11-20 23:14:20,573 INFO L226 Difference]: Without dead ends: 3286 [2021-11-20 23:14:20,588 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:14:20,590 INFO L933 BasicCegarLoop]: 2046 mSDtfsCounter, 1539 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:20,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1539 Valid, 3639 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 348 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2021-11-20 23:14:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-11-20 23:14:20,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 3273. [2021-11-20 23:14:20,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3273 states, 2043 states have (on average 1.3925599608418993) internal successors, (2845), 2196 states have internal predecessors, (2845), 978 states have call successors, (978), 255 states have call predecessors, (978), 251 states have return successors, (1055), 889 states have call predecessors, (1055), 973 states have call successors, (1055) [2021-11-20 23:14:20,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3273 states to 3273 states and 4878 transitions. [2021-11-20 23:14:20,813 INFO L78 Accepts]: Start accepts. Automaton has 3273 states and 4878 transitions. Word has length 89 [2021-11-20 23:14:20,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:20,815 INFO L470 AbstractCegarLoop]: Abstraction has 3273 states and 4878 transitions. [2021-11-20 23:14:20,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 23:14:20,816 INFO L276 IsEmpty]: Start isEmpty. Operand 3273 states and 4878 transitions. [2021-11-20 23:14:20,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-20 23:14:20,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:20,822 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:14:20,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:14:20,823 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:14:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:20,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2034694332, now seen corresponding path program 1 times [2021-11-20 23:14:20,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:20,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086677353] [2021-11-20 23:14:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:20,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-20 23:14:21,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:21,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086677353] [2021-11-20 23:14:21,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086677353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:21,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:21,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:21,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596661263] [2021-11-20 23:14:21,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:21,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:21,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:21,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:21,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:21,083 INFO L87 Difference]: Start difference. First operand 3273 states and 4878 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 23:14:23,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:14:26,840 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:27,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:27,257 INFO L93 Difference]: Finished difference Result 4927 states and 7472 transitions. [2021-11-20 23:14:27,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:27,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2021-11-20 23:14:27,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:27,307 INFO L225 Difference]: With dead ends: 4927 [2021-11-20 23:14:27,307 INFO L226 Difference]: Without dead ends: 4924 [2021-11-20 23:14:27,312 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:14:27,313 INFO L933 BasicCegarLoop]: 2084 mSDtfsCounter, 1452 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 3735 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:27,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1452 Valid, 3735 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-11-20 23:14:27,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4924 states. [2021-11-20 23:14:27,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4924 to 4882. [2021-11-20 23:14:27,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 3039 states have (on average 1.399473511023363) internal successors, (4253), 3302 states have internal predecessors, (4253), 1458 states have call successors, (1458), 398 states have call predecessors, (1458), 384 states have return successors, (1697), 1285 states have call predecessors, (1697), 1453 states have call successors, (1697) [2021-11-20 23:14:27,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 7408 transitions. [2021-11-20 23:14:27,688 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 7408 transitions. Word has length 90 [2021-11-20 23:14:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:27,690 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 7408 transitions. [2021-11-20 23:14:27,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 23:14:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 7408 transitions. [2021-11-20 23:14:27,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-20 23:14:27,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:27,694 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:14:27,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:14:27,695 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:14:27,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:27,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1349512741, now seen corresponding path program 1 times [2021-11-20 23:14:27,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:27,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850651490] [2021-11-20 23:14:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:27,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-20 23:14:27,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:27,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850651490] [2021-11-20 23:14:27,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850651490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:27,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:27,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:27,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163193188] [2021-11-20 23:14:27,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:27,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:27,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:27,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:27,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:27,900 INFO L87 Difference]: Start difference. First operand 4882 states and 7408 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 23:14:30,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:14:33,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:34,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:34,041 INFO L93 Difference]: Finished difference Result 5967 states and 8998 transitions. [2021-11-20 23:14:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:34,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2021-11-20 23:14:34,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:34,103 INFO L225 Difference]: With dead ends: 5967 [2021-11-20 23:14:34,103 INFO L226 Difference]: Without dead ends: 5964 [2021-11-20 23:14:34,109 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:14:34,111 INFO L933 BasicCegarLoop]: 2041 mSDtfsCounter, 1575 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 3603 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:34,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1576 Valid, 3603 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-11-20 23:14:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5964 states. [2021-11-20 23:14:34,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5964 to 5956. [2021-11-20 23:14:34,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5956 states, 3715 states have (on average 1.3989232839838492) internal successors, (5197), 4025 states have internal predecessors, (5197), 1775 states have call successors, (1775), 479 states have call predecessors, (1775), 465 states have return successors, (2015), 1577 states have call predecessors, (2015), 1770 states have call successors, (2015) [2021-11-20 23:14:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 8987 transitions. [2021-11-20 23:14:34,572 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 8987 transitions. Word has length 91 [2021-11-20 23:14:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:34,573 INFO L470 AbstractCegarLoop]: Abstraction has 5956 states and 8987 transitions. [2021-11-20 23:14:34,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 23:14:34,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 8987 transitions. [2021-11-20 23:14:34,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-20 23:14:34,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:34,584 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:14:34,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:14:34,584 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:14:34,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:34,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1114255263, now seen corresponding path program 1 times [2021-11-20 23:14:34,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:34,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13997450] [2021-11-20 23:14:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:34,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-20 23:14:34,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:34,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13997450] [2021-11-20 23:14:34,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13997450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:34,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:34,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:34,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470325478] [2021-11-20 23:14:34,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:34,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:34,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:34,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:34,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:34,800 INFO L87 Difference]: Start difference. First operand 5956 states and 8987 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 23:14:37,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:14:40,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:40,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:40,973 INFO L93 Difference]: Finished difference Result 5968 states and 8998 transitions. [2021-11-20 23:14:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:40,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2021-11-20 23:14:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:41,034 INFO L225 Difference]: With dead ends: 5968 [2021-11-20 23:14:41,034 INFO L226 Difference]: Without dead ends: 5958 [2021-11-20 23:14:41,041 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:14:41,042 INFO L933 BasicCegarLoop]: 2042 mSDtfsCounter, 1572 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 3607 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:41,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 3607 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 344 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-20 23:14:41,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5958 states. [2021-11-20 23:14:41,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5958 to 5950. [2021-11-20 23:14:41,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5950 states, 3709 states have (on average 1.3990293879751954) internal successors, (5189), 4020 states have internal predecessors, (5189), 1775 states have call successors, (1775), 479 states have call predecessors, (1775), 465 states have return successors, (2014), 1576 states have call predecessors, (2014), 1770 states have call successors, (2014) [2021-11-20 23:14:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 8978 transitions. [2021-11-20 23:14:41,549 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 8978 transitions. Word has length 92 [2021-11-20 23:14:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:41,551 INFO L470 AbstractCegarLoop]: Abstraction has 5950 states and 8978 transitions. [2021-11-20 23:14:41,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 23:14:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 8978 transitions. [2021-11-20 23:14:41,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-20 23:14:41,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:41,561 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:14:41,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:14:41,562 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:14:41,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1501500199, now seen corresponding path program 1 times [2021-11-20 23:14:41,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:41,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851901353] [2021-11-20 23:14:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:41,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:41,906 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-20 23:14:41,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:41,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851901353] [2021-11-20 23:14:41,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851901353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:41,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:41,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:14:41,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360902733] [2021-11-20 23:14:41,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:41,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:14:41,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:41,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:14:41,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:14:41,910 INFO L87 Difference]: Start difference. First operand 5950 states and 8978 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:14:47,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:15:00,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:08,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:08,755 INFO L93 Difference]: Finished difference Result 15561 states and 23617 transitions. [2021-11-20 23:15:08,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:15:08,756 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 135 [2021-11-20 23:15:08,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:08,821 INFO L225 Difference]: With dead ends: 15561 [2021-11-20 23:15:08,822 INFO L226 Difference]: Without dead ends: 9628 [2021-11-20 23:15:08,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:15:08,864 INFO L933 BasicCegarLoop]: 1622 mSDtfsCounter, 2278 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 6495 mSolverCounterSat, 1429 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2591 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 7926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1429 IncrementalHoareTripleChecker+Valid, 6495 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:08,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2591 Valid, 3208 Invalid, 7926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1429 Valid, 6495 Invalid, 2 Unknown, 0 Unchecked, 26.0s Time] [2021-11-20 23:15:08,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9628 states. [2021-11-20 23:15:09,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9628 to 9554. [2021-11-20 23:15:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9554 states, 5938 states have (on average 1.3954193331087907) internal successors, (8286), 6444 states have internal predecessors, (8286), 2827 states have call successors, (2827), 799 states have call predecessors, (2827), 788 states have return successors, (3271), 2529 states have call predecessors, (3271), 2822 states have call successors, (3271) [2021-11-20 23:15:09,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9554 states to 9554 states and 14384 transitions. [2021-11-20 23:15:09,473 INFO L78 Accepts]: Start accepts. Automaton has 9554 states and 14384 transitions. Word has length 135 [2021-11-20 23:15:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:09,474 INFO L470 AbstractCegarLoop]: Abstraction has 9554 states and 14384 transitions. [2021-11-20 23:15:09,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:15:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 9554 states and 14384 transitions. [2021-11-20 23:15:09,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-20 23:15:09,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:09,486 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:15:09,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:15:09,486 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:09,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:09,487 INFO L85 PathProgramCache]: Analyzing trace with hash 685955789, now seen corresponding path program 1 times [2021-11-20 23:15:09,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:09,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618930381] [2021-11-20 23:15:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:09,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-20 23:15:09,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:09,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618930381] [2021-11-20 23:15:09,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618930381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:09,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:09,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:15:09,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341508054] [2021-11-20 23:15:09,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:09,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:15:09,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:09,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:15:09,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:15:09,760 INFO L87 Difference]: Start difference. First operand 9554 states and 14384 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:15:14,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:15:27,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:34,069 INFO L93 Difference]: Finished difference Result 27087 states and 41563 transitions. [2021-11-20 23:15:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:15:34,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 136 [2021-11-20 23:15:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:34,188 INFO L225 Difference]: With dead ends: 27087 [2021-11-20 23:15:34,188 INFO L226 Difference]: Without dead ends: 17550 [2021-11-20 23:15:34,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:15:34,359 INFO L933 BasicCegarLoop]: 1637 mSDtfsCounter, 2278 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 6524 mSolverCounterSat, 1430 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 7956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 6524 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:34,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2593 Valid, 3266 Invalid, 7956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1430 Valid, 6524 Invalid, 2 Unknown, 0 Unchecked, 23.3s Time] [2021-11-20 23:15:34,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17550 states. [2021-11-20 23:15:35,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17550 to 17279. [2021-11-20 23:15:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17279 states, 10686 states have (on average 1.3890136627362906) internal successors, (14843), 11629 states have internal predecessors, (14843), 5051 states have call successors, (5051), 1519 states have call predecessors, (5051), 1541 states have return successors, (6320), 4549 states have call predecessors, (6320), 5046 states have call successors, (6320) [2021-11-20 23:15:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17279 states to 17279 states and 26214 transitions. [2021-11-20 23:15:35,695 INFO L78 Accepts]: Start accepts. Automaton has 17279 states and 26214 transitions. Word has length 136 [2021-11-20 23:15:35,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:35,696 INFO L470 AbstractCegarLoop]: Abstraction has 17279 states and 26214 transitions. [2021-11-20 23:15:35,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:15:35,696 INFO L276 IsEmpty]: Start isEmpty. Operand 17279 states and 26214 transitions. [2021-11-20 23:15:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-20 23:15:35,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:35,714 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:15:35,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:15:35,715 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:35,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash 750317142, now seen corresponding path program 1 times [2021-11-20 23:15:35,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:35,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954042058] [2021-11-20 23:15:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:35,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:36,002 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-20 23:15:36,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:36,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954042058] [2021-11-20 23:15:36,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954042058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:36,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:36,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:15:36,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728435728] [2021-11-20 23:15:36,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:36,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:15:36,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:36,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:15:36,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:15:36,005 INFO L87 Difference]: Start difference. First operand 17279 states and 26214 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-20 23:15:40,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:15:51,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:59,000 INFO L93 Difference]: Finished difference Result 34525 states and 53152 transitions. [2021-11-20 23:15:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:15:59,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 143 [2021-11-20 23:15:59,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:59,114 INFO L225 Difference]: With dead ends: 34525 [2021-11-20 23:15:59,115 INFO L226 Difference]: Without dead ends: 17032 [2021-11-20 23:15:59,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:15:59,206 INFO L933 BasicCegarLoop]: 1473 mSDtfsCounter, 2267 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 5818 mSolverCounterSat, 1396 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2583 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 7216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1396 IncrementalHoareTripleChecker+Valid, 5818 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:59,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2583 Valid, 2680 Invalid, 7216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1396 Valid, 5818 Invalid, 2 Unknown, 0 Unchecked, 21.9s Time] [2021-11-20 23:15:59,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17032 states. [2021-11-20 23:16:00,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17032 to 17004. [2021-11-20 23:16:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17004 states, 10559 states have (on average 1.3807178710105124) internal successors, (14579), 11413 states have internal predecessors, (14579), 4919 states have call successors, (4919), 1508 states have call predecessors, (4919), 1525 states have return successors, (5877), 4433 states have call predecessors, (5877), 4914 states have call successors, (5877) [2021-11-20 23:16:00,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17004 states to 17004 states and 25375 transitions. [2021-11-20 23:16:00,672 INFO L78 Accepts]: Start accepts. Automaton has 17004 states and 25375 transitions. Word has length 143 [2021-11-20 23:16:00,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:00,673 INFO L470 AbstractCegarLoop]: Abstraction has 17004 states and 25375 transitions. [2021-11-20 23:16:00,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-20 23:16:00,674 INFO L276 IsEmpty]: Start isEmpty. Operand 17004 states and 25375 transitions. [2021-11-20 23:16:00,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-20 23:16:00,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:00,687 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:16:00,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:16:00,688 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:16:00,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:00,689 INFO L85 PathProgramCache]: Analyzing trace with hash 230465017, now seen corresponding path program 1 times [2021-11-20 23:16:00,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:00,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846146353] [2021-11-20 23:16:00,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:00,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-20 23:16:00,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:00,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846146353] [2021-11-20 23:16:00,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846146353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:00,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:00,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:16:00,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790213557] [2021-11-20 23:16:00,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:00,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:16:00,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:00,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:16:00,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:16:00,987 INFO L87 Difference]: Start difference. First operand 17004 states and 25375 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:16:06,094 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:16:19,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:27,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:27,456 INFO L93 Difference]: Finished difference Result 50543 states and 75726 transitions. [2021-11-20 23:16:27,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:16:27,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 138 [2021-11-20 23:16:27,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:27,667 INFO L225 Difference]: With dead ends: 50543 [2021-11-20 23:16:27,667 INFO L226 Difference]: Without dead ends: 33537 [2021-11-20 23:16:27,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:16:27,752 INFO L933 BasicCegarLoop]: 1616 mSDtfsCounter, 2278 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 6482 mSolverCounterSat, 1419 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 7903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1419 IncrementalHoareTripleChecker+Valid, 6482 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:27,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2593 Valid, 3190 Invalid, 7903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1419 Valid, 6482 Invalid, 2 Unknown, 0 Unchecked, 24.7s Time] [2021-11-20 23:16:27,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33537 states. [2021-11-20 23:16:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33537 to 33227. [2021-11-20 23:16:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33227 states, 20517 states have (on average 1.368913583857289) internal successors, (28086), 22150 states have internal predecessors, (28086), 9461 states have call successors, (9461), 3177 states have call predecessors, (9461), 3248 states have return successors, (11272), 8562 states have call predecessors, (11272), 9456 states have call successors, (11272) [2021-11-20 23:16:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33227 states to 33227 states and 48819 transitions. [2021-11-20 23:16:30,096 INFO L78 Accepts]: Start accepts. Automaton has 33227 states and 48819 transitions. Word has length 138 [2021-11-20 23:16:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:30,098 INFO L470 AbstractCegarLoop]: Abstraction has 33227 states and 48819 transitions. [2021-11-20 23:16:30,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:16:30,099 INFO L276 IsEmpty]: Start isEmpty. Operand 33227 states and 48819 transitions. [2021-11-20 23:16:30,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-20 23:16:30,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:30,114 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:16:30,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:16:30,114 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:16:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:30,115 INFO L85 PathProgramCache]: Analyzing trace with hash -486279964, now seen corresponding path program 1 times [2021-11-20 23:16:30,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:30,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841064325] [2021-11-20 23:16:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:30,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-20 23:16:30,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:30,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841064325] [2021-11-20 23:16:30,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841064325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:30,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:30,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:16:30,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203340350] [2021-11-20 23:16:30,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:30,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:16:30,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:30,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:16:30,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:16:30,246 INFO L87 Difference]: Start difference. First operand 33227 states and 48819 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-20 23:16:32,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:16:36,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:38,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:38,826 INFO L93 Difference]: Finished difference Result 96801 states and 141734 transitions. [2021-11-20 23:16:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:16:38,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 139 [2021-11-20 23:16:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:39,302 INFO L225 Difference]: With dead ends: 96801 [2021-11-20 23:16:39,302 INFO L226 Difference]: Without dead ends: 63591 [2021-11-20 23:16:39,428 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:16:39,429 INFO L933 BasicCegarLoop]: 2050 mSDtfsCounter, 1428 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:39,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1429 Valid, 3600 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 359 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2021-11-20 23:16:39,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63591 states. [2021-11-20 23:16:42,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63591 to 63562. [2021-11-20 23:16:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63562 states, 39210 states have (on average 1.3636572302983934) internal successors, (53469), 42264 states have internal predecessors, (53469), 17890 states have call successors, (17890), 6318 states have call predecessors, (17890), 6461 states have return successors, (21517), 16252 states have call predecessors, (21517), 17885 states have call successors, (21517) [2021-11-20 23:16:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63562 states to 63562 states and 92876 transitions. [2021-11-20 23:16:42,970 INFO L78 Accepts]: Start accepts. Automaton has 63562 states and 92876 transitions. Word has length 139 [2021-11-20 23:16:43,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:43,345 INFO L470 AbstractCegarLoop]: Abstraction has 63562 states and 92876 transitions. [2021-11-20 23:16:43,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-20 23:16:43,346 INFO L276 IsEmpty]: Start isEmpty. Operand 63562 states and 92876 transitions. [2021-11-20 23:16:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-20 23:16:43,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:43,387 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:16:43,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:16:43,388 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:16:43,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:43,388 INFO L85 PathProgramCache]: Analyzing trace with hash 750596287, now seen corresponding path program 1 times [2021-11-20 23:16:43,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:43,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108928734] [2021-11-20 23:16:43,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:43,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-20 23:16:43,581 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:43,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108928734] [2021-11-20 23:16:43,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108928734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:43,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:43,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:16:43,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728118893] [2021-11-20 23:16:43,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:43,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:16:43,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:16:43,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:16:43,584 INFO L87 Difference]: Start difference. First operand 63562 states and 92876 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 23:16:46,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:16:52,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:54,564 INFO L93 Difference]: Finished difference Result 186849 states and 271790 transitions. [2021-11-20 23:16:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:16:54,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 136 [2021-11-20 23:16:54,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:55,158 INFO L225 Difference]: With dead ends: 186849 [2021-11-20 23:16:55,158 INFO L226 Difference]: Without dead ends: 123304 [2021-11-20 23:16:55,586 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:16:55,587 INFO L933 BasicCegarLoop]: 2119 mSDtfsCounter, 1515 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:55,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 3642 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 363 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-20 23:16:55,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123304 states. [2021-11-20 23:17:01,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123304 to 123279. [2021-11-20 23:17:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123279 states, 76190 states have (on average 1.3646804042525267) internal successors, (103975), 82211 states have internal predecessors, (103975), 34357 states have call successors, (34357), 12428 states have call predecessors, (34357), 12731 states have return successors, (40521), 31183 states have call predecessors, (40521), 34352 states have call successors, (40521) [2021-11-20 23:17:02,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123279 states to 123279 states and 178853 transitions. [2021-11-20 23:17:02,398 INFO L78 Accepts]: Start accepts. Automaton has 123279 states and 178853 transitions. Word has length 136 [2021-11-20 23:17:02,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:02,398 INFO L470 AbstractCegarLoop]: Abstraction has 123279 states and 178853 transitions. [2021-11-20 23:17:02,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 23:17:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 123279 states and 178853 transitions. [2021-11-20 23:17:02,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-20 23:17:02,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:02,418 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:17:02,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:17:02,418 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:17:02,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:02,419 INFO L85 PathProgramCache]: Analyzing trace with hash 734400207, now seen corresponding path program 1 times [2021-11-20 23:17:02,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:02,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046931873] [2021-11-20 23:17:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:02,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-20 23:17:03,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:03,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046931873] [2021-11-20 23:17:03,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046931873] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:03,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84648570] [2021-11-20 23:17:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:03,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:03,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:03,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:03,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:17:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:04,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:17:04,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-20 23:17:04,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:17:04,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84648570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:04,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:17:04,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-20 23:17:04,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223925209] [2021-11-20 23:17:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:04,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:17:04,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:17:04,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:17:04,519 INFO L87 Difference]: Start difference. First operand 123279 states and 178853 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-20 23:17:07,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:17:11,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:14,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:14,018 INFO L93 Difference]: Finished difference Result 133403 states and 191899 transitions. [2021-11-20 23:17:14,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:17:14,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2021-11-20 23:17:14,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:14,413 INFO L225 Difference]: With dead ends: 133403 [2021-11-20 23:17:14,413 INFO L226 Difference]: Without dead ends: 62103 [2021-11-20 23:17:14,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:17:14,668 INFO L933 BasicCegarLoop]: 2018 mSDtfsCounter, 1575 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 3576 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:14,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1576 Valid, 3576 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 351 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-11-20 23:17:14,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62103 states. [2021-11-20 23:17:17,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62103 to 62095. [2021-11-20 23:17:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62095 states, 38666 states have (on average 1.3723426265970102) internal successors, (53063), 41607 states have internal predecessors, (53063), 17473 states have call successors, (17473), 5944 states have call predecessors, (17473), 5955 states have return successors, (19861), 15795 states have call predecessors, (19861), 17468 states have call successors, (19861) [2021-11-20 23:17:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62095 states to 62095 states and 90397 transitions. [2021-11-20 23:17:18,315 INFO L78 Accepts]: Start accepts. Automaton has 62095 states and 90397 transitions. Word has length 124 [2021-11-20 23:17:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:18,316 INFO L470 AbstractCegarLoop]: Abstraction has 62095 states and 90397 transitions. [2021-11-20 23:17:18,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-20 23:17:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 62095 states and 90397 transitions. [2021-11-20 23:17:18,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-20 23:17:18,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:18,331 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-20 23:17:18,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 23:17:18,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 23:17:18,545 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:17:18,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:18,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1852367773, now seen corresponding path program 1 times [2021-11-20 23:17:18,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:18,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459199897] [2021-11-20 23:17:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:18,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-20 23:17:19,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:19,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459199897] [2021-11-20 23:17:19,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459199897] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:19,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433941913] [2021-11-20 23:17:19,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:19,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:19,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:19,267 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:19,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e9f70b-4389-440a-9732-48cc811d6151/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:17:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:20,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:17:20,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-20 23:17:20,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:17:20,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433941913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:20,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:17:20,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-20 23:17:20,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44836551] [2021-11-20 23:17:20,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:20,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:17:20,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:20,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:17:20,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:17:20,643 INFO L87 Difference]: Start difference. First operand 62095 states and 90397 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 23:17:23,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []