./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/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_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7 --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 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:04:26,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:04:26,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:04:26,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:04:26,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:04:26,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:04:26,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:04:26,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:04:26,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:04:26,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:04:26,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:04:26,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:04:26,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:04:26,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:04:26,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:04:26,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:04:26,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:04:26,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:04:26,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:04:26,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:04:26,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:04:26,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:04:26,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:04:26,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:04:26,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:04:26,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:04:26,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:04:26,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:04:26,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:04:26,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:04:26,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:04:26,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:04:26,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:04:26,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:04:26,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:04:26,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:04:26,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:04:26,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:04:26,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:04:26,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:04:26,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:04:26,708 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:04:26,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:04:26,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:04:26,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:04:26,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:04:26,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:04:26,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:04:26,765 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:04:26,765 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:04:26,766 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:04:26,766 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:04:26,766 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:04:26,766 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:04:26,766 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:04:26,767 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:04:26,767 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:04:26,767 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:04:26,767 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:04:26,767 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:04:26,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:04:26,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:04:26,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:04:26,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:04:26,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:04:26,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:04:26,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:04:26,769 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:04:26,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:04:26,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:04:26,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:04:26,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:04:26,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:04:26,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:04:26,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:04:26,771 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:04:26,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:04:26,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:04:26,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:04:26,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:04:26,772 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_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6150b3a515973ce4119efed812e463608b94129eea9915abf4784f091ce6f187 [2021-11-25 18:04:27,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:04:27,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:04:27,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:04:27,123 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:04:27,124 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:04:27,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/../../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 [2021-11-25 18:04:27,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/data/8be77985c/2b8e1f2b02224f37bffc82b9bb391a18/FLAG61917b07c [2021-11-25 18:04:28,034 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:04:28,035 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/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 [2021-11-25 18:04:28,080 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/data/8be77985c/2b8e1f2b02224f37bffc82b9bb391a18/FLAG61917b07c [2021-11-25 18:04:28,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/data/8be77985c/2b8e1f2b02224f37bffc82b9bb391a18 [2021-11-25 18:04:28,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:04:28,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:04:28,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:04:28,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:04:28,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:04:28,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:28" (1/1) ... [2021-11-25 18:04:28,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4672e22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:28, skipping insertion in model container [2021-11-25 18:04:28,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:28" (1/1) ... [2021-11-25 18:04:28,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:04:28,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:04:30,044 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_1ef56986-8016-4866-80ac-4e032913d630/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] [2021-11-25 18:04:30,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:04:30,123 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:04:30,589 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_1ef56986-8016-4866-80ac-4e032913d630/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] [2021-11-25 18:04:30,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:04:30,738 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:04:30,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:30 WrapperNode [2021-11-25 18:04:30,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:04:30,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:04:30,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:04:30,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:04:30,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:30" (1/1) ... [2021-11-25 18:04:30,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:30" (1/1) ... [2021-11-25 18:04:31,041 INFO L137 Inliner]: procedures = 258, calls = 1803, calls flagged for inlining = 103, calls inlined = 99, statements flattened = 4499 [2021-11-25 18:04:31,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:04:31,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:04:31,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:04:31,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:04:31,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:30" (1/1) ... [2021-11-25 18:04:31,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:30" (1/1) ... [2021-11-25 18:04:31,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:30" (1/1) ... [2021-11-25 18:04:31,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:30" (1/1) ... [2021-11-25 18:04:31,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:30" (1/1) ... [2021-11-25 18:04:31,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:30" (1/1) ... [2021-11-25 18:04:31,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:30" (1/1) ... [2021-11-25 18:04:31,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:04:31,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:04:31,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:04:31,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:04:31,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:30" (1/1) ... [2021-11-25 18:04:31,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:04:31,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:31,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:04:31,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ef56986-8016-4866-80ac-4e032913d630/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:04:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 18:04:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 18:04:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2021-11-25 18:04:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2021-11-25 18:04:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:04:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:04:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:04:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:04:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:04:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:04:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_delete [2021-11-25 18:04:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_delete [2021-11-25 18:04:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_wait [2021-11-25 18:04:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_wait [2021-11-25 18:04:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2021-11-25 18:04:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2021-11-25 18:04:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-25 18:04:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-25 18:04:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-25 18:04:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-25 18:04:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:04:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:04:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-11-25 18:04:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-11-25 18:04:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-25 18:04:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-25 18:04:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2021-11-25 18:04:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2021-11-25 18:04:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_50 [2021-11-25 18:04:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_50 [2021-11-25 18:04:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:04:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:04:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 18:04:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 18:04:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:04:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:04:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:04:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:04:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_detect_change [2021-11-25 18:04:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_detect_change [2021-11-25 18:04:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-25 18:04:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-25 18:04:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_cancel [2021-11-25 18:04:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_cancel [2021-11-25 18:04:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-25 18:04:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-25 18:04:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_init [2021-11-25 18:04:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_init [2021-11-25 18:04:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-25 18:04:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-25 18:04:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2021-11-25 18:04:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2021-11-25 18:04:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:04:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-25 18:04:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-25 18:04:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:04:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:04:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-11-25 18:04:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-11-25 18:04:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:04:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2021-11-25 18:04:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2021-11-25 18:04:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-25 18:04:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-25 18:04:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2021-11-25 18:04:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2021-11-25 18:04:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_disconnect [2021-11-25 18:04:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_disconnect [2021-11-25 18:04:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2021-11-25 18:04:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2021-11-25 18:04:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2021-11-25 18:04:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2021-11-25 18:04:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:04:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:04:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 18:04:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 18:04:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 18:04:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 18:04:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2021-11-25 18:04:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2021-11-25 18:04:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:04:31,483 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:04:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 18:04:31,484 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 18:04:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure add_offloaded_reg [2021-11-25 18:04:31,484 INFO L138 BoogieDeclarations]: Found implementation of procedure add_offloaded_reg [2021-11-25 18:04:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-25 18:04:31,484 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-25 18:04:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2021-11-25 18:04:31,485 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2021-11-25 18:04:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure roundup_to_multiple_of_64 [2021-11-25 18:04:31,486 INFO L138 BoogieDeclarations]: Found implementation of procedure roundup_to_multiple_of_64 [2021-11-25 18:04:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-25 18:04:31,487 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-25 18:04:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:04:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2021-11-25 18:04:31,488 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2021-11-25 18:04:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:04:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2021-11-25 18:04:31,488 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2021-11-25 18:04:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-25 18:04:31,488 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-25 18:04:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-11-25 18:04:31,489 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-11-25 18:04:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:04:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-11-25 18:04:31,490 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-11-25 18:04:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:04:31,490 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:04:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-25 18:04:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-25 18:04:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2021-11-25 18:04:31,494 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2021-11-25 18:04:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-25 18:04:31,495 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-25 18:04:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:04:31,496 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:04:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-25 18:04:31,497 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-25 18:04:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:04:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_response_error [2021-11-25 18:04:31,503 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_response_error [2021-11-25 18:04:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2021-11-25 18:04:31,504 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2021-11-25 18:04:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_free_host [2021-11-25 18:04:31,504 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_free_host [2021-11-25 18:04:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:04:31,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:04:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2021-11-25 18:04:31,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2021-11-25 18:04:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-25 18:04:31,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-25 18:04:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:04:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_queue_poll_work [2021-11-25 18:04:31,505 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_queue_poll_work [2021-11-25 18:04:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2021-11-25 18:04:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2021-11-25 18:04:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-25 18:04:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-25 18:04:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-25 18:04:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-25 18:04:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2021-11-25 18:04:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2021-11-25 18:04:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:04:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_to_buffer [2021-11-25 18:04:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_to_buffer [2021-11-25 18:04:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_9 [2021-11-25 18:04:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_9 [2021-11-25 18:04:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:04:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:04:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:04:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure __download_offload_pseudocode [2021-11-25 18:04:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __download_offload_pseudocode [2021-11-25 18:04:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:04:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:04:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_4 [2021-11-25 18:04:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_4 [2021-11-25 18:04:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2021-11-25 18:04:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2021-11-25 18:04:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_InterfaceNumber [2021-11-25 18:04:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_InterfaceNumber [2021-11-25 18:04:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-25 18:04:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-25 18:04:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 18:04:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 18:04:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2021-11-25 18:04:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2021-11-25 18:04:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2021-11-25 18:04:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2021-11-25 18:04:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure new_system_port_status [2021-11-25 18:04:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure new_system_port_status [2021-11-25 18:04:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_request_done [2021-11-25 18:04:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_request_done [2021-11-25 18:04:31,512 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 18:04:31,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 18:04:31,512 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 18:04:31,512 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 18:04:31,512 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2021-11-25 18:04:31,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2021-11-25 18:04:31,512 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-11-25 18:04:31,513 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-11-25 18:04:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-25 18:04:31,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-25 18:04:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 18:04:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_47 [2021-11-25 18:04:31,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_47 [2021-11-25 18:04:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-11-25 18:04:31,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-11-25 18:04:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:04:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2021-11-25 18:04:31,516 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2021-11-25 18:04:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_priv [2021-11-25 18:04:31,516 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_priv [2021-11-25 18:04:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-25 18:04:31,516 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-25 18:04:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_deadwork_thread [2021-11-25 18:04:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_deadwork_thread [2021-11-25 18:04:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure check_vub300_port_status [2021-11-25 18:04:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure check_vub300_port_status [2021-11-25 18:04:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-25 18:04:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:04:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:04:32,329 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:04:32,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:04:33,508 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:04:37,018 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:04:38,759 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:04:38,759 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:04:38,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:38 BoogieIcfgContainer [2021-11-25 18:04:38,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:04:38,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:04:38,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:04:38,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:04:38,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:04:28" (1/3) ... [2021-11-25 18:04:38,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a690747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:04:38, skipping insertion in model container [2021-11-25 18:04:38,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:30" (2/3) ... [2021-11-25 18:04:38,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a690747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:04:38, skipping insertion in model container [2021-11-25 18:04:38,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:38" (3/3) ... [2021-11-25 18:04:38,773 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 [2021-11-25 18:04:38,779 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:04:38,779 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:04:38,845 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:04:38,861 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 [2021-11-25 18:04:38,862 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:04:38,926 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) [2021-11-25 18:04:38,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 18:04:38,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:38,958 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] [2021-11-25 18:04:38,959 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:38,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1070290393, now seen corresponding path program 1 times [2021-11-25 18:04:38,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:38,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146154267] [2021-11-25 18:04:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:38,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-25 18:04:39,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:39,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146154267] [2021-11-25 18:04:39,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146154267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:39,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:39,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:04:39,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261938283] [2021-11-25 18:04:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:39,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:04:39,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:39,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:04:39,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:04:39,925 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) [2021-11-25 18:04:42,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:04:45,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:46,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:46,035 INFO L93 Difference]: Finished difference Result 2266 states and 3363 transitions. [2021-11-25 18:04:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:04:46,042 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 [2021-11-25 18:04:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:46,113 INFO L225 Difference]: With dead ends: 2266 [2021-11-25 18:04:46,113 INFO L226 Difference]: Without dead ends: 2228 [2021-11-25 18:04:46,122 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 [2021-11-25 18:04:46,129 INFO L933 BasicCegarLoop]: 2036 mSDtfsCounter, 1514 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s 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, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:46,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 3648 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 348 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 18:04:46,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-11-25 18:04:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2214. [2021-11-25 18:04:46,425 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) [2021-11-25 18:04:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3271 transitions. [2021-11-25 18:04:46,458 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3271 transitions. Word has length 88 [2021-11-25 18:04:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:46,459 INFO L470 AbstractCegarLoop]: Abstraction has 2214 states and 3271 transitions. [2021-11-25 18:04:46,460 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) [2021-11-25 18:04:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3271 transitions. [2021-11-25 18:04:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 18:04:46,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:46,472 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] [2021-11-25 18:04:46,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:04:46,472 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1181273512, now seen corresponding path program 1 times [2021-11-25 18:04:46,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:46,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345007141] [2021-11-25 18:04:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:46,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-25 18:04:46,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:46,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345007141] [2021-11-25 18:04:46,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345007141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:46,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:46,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:04:46,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269544454] [2021-11-25 18:04:46,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:46,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:04:46,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:46,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:04:46,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:04:46,763 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) [2021-11-25 18:04:49,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:04:52,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:52,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:52,927 INFO L93 Difference]: Finished difference Result 4494 states and 6655 transitions. [2021-11-25 18:04:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:04:52,928 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 [2021-11-25 18:04:52,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:52,958 INFO L225 Difference]: With dead ends: 4494 [2021-11-25 18:04:52,958 INFO L226 Difference]: Without dead ends: 3286 [2021-11-25 18:04:52,973 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 [2021-11-25 18:04:52,975 INFO L933 BasicCegarLoop]: 2046 mSDtfsCounter, 1539 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s 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, 5.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:52,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1539 Valid, 3639 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 348 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-11-25 18:04:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-11-25 18:04:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 3273. [2021-11-25 18:04:53,157 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) [2021-11-25 18:04:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3273 states to 3273 states and 4878 transitions. [2021-11-25 18:04:53,190 INFO L78 Accepts]: Start accepts. Automaton has 3273 states and 4878 transitions. Word has length 89 [2021-11-25 18:04:53,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:53,191 INFO L470 AbstractCegarLoop]: Abstraction has 3273 states and 4878 transitions. [2021-11-25 18:04:53,191 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) [2021-11-25 18:04:53,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3273 states and 4878 transitions. [2021-11-25 18:04:53,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-25 18:04:53,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:53,197 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] [2021-11-25 18:04:53,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:04:53,198 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:53,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:53,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2034694332, now seen corresponding path program 1 times [2021-11-25 18:04:53,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:53,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815594922] [2021-11-25 18:04:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:53,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-25 18:04:53,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:53,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815594922] [2021-11-25 18:04:53,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815594922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:53,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:53,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:04:53,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228099402] [2021-11-25 18:04:53,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:53,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:04:53,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:53,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:04:53,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:04:53,399 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) [2021-11-25 18:04:55,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:04:59,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:59,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:59,600 INFO L93 Difference]: Finished difference Result 4927 states and 7472 transitions. [2021-11-25 18:04:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:04:59,601 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 [2021-11-25 18:04:59,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:59,649 INFO L225 Difference]: With dead ends: 4927 [2021-11-25 18:04:59,649 INFO L226 Difference]: Without dead ends: 4924 [2021-11-25 18:04:59,655 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 [2021-11-25 18:04:59,658 INFO L933 BasicCegarLoop]: 2090 mSDtfsCounter, 1452 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 3741 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:59,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1452 Valid, 3741 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 18:04:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4924 states. [2021-11-25 18:04:59,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4924 to 4882. [2021-11-25 18:04:59,951 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) [2021-11-25 18:04:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 7408 transitions. [2021-11-25 18:04:59,987 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 7408 transitions. Word has length 90 [2021-11-25 18:04:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:59,989 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 7408 transitions. [2021-11-25 18:04:59,989 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) [2021-11-25 18:04:59,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 7408 transitions. [2021-11-25 18:04:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 18:04:59,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:59,993 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] [2021-11-25 18:04:59,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:04:59,994 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:59,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:59,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1349512741, now seen corresponding path program 1 times [2021-11-25 18:04:59,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:59,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729706045] [2021-11-25 18:04:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:59,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-25 18:05:00,242 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:00,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729706045] [2021-11-25 18:05:00,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729706045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:00,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:00,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:05:00,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366121372] [2021-11-25 18:05:00,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:00,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:05:00,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:00,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:05:00,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:05:00,249 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) [2021-11-25 18:05:02,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:05:05,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:06,199 INFO L93 Difference]: Finished difference Result 5967 states and 8998 transitions. [2021-11-25 18:05:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:05:06,200 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 [2021-11-25 18:05:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:06,254 INFO L225 Difference]: With dead ends: 5967 [2021-11-25 18:05:06,254 INFO L226 Difference]: Without dead ends: 5964 [2021-11-25 18:05:06,260 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 [2021-11-25 18:05:06,264 INFO L933 BasicCegarLoop]: 2041 mSDtfsCounter, 1575 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s 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, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:06,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1576 Valid, 3603 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 18:05:06,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5964 states. [2021-11-25 18:05:06,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5964 to 5956. [2021-11-25 18:05:06,593 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) [2021-11-25 18:05:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 8987 transitions. [2021-11-25 18:05:06,625 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 8987 transitions. Word has length 91 [2021-11-25 18:05:06,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:06,626 INFO L470 AbstractCegarLoop]: Abstraction has 5956 states and 8987 transitions. [2021-11-25 18:05:06,627 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) [2021-11-25 18:05:06,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 8987 transitions. [2021-11-25 18:05:06,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-25 18:05:06,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:06,636 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] [2021-11-25 18:05:06,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:05:06,637 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:05:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:06,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1114255263, now seen corresponding path program 1 times [2021-11-25 18:05:06,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:06,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121662426] [2021-11-25 18:05:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:06,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-25 18:05:06,859 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:06,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121662426] [2021-11-25 18:05:06,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121662426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:06,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:06,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:05:06,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612177227] [2021-11-25 18:05:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:06,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:05:06,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:06,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:05:06,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:05:06,862 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) [2021-11-25 18:05:09,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:05:12,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:12,841 INFO L93 Difference]: Finished difference Result 5968 states and 8998 transitions. [2021-11-25 18:05:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:05:12,841 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 [2021-11-25 18:05:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:12,889 INFO L225 Difference]: With dead ends: 5968 [2021-11-25 18:05:12,889 INFO L226 Difference]: Without dead ends: 5958 [2021-11-25 18:05:12,894 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 [2021-11-25 18:05:12,895 INFO L933 BasicCegarLoop]: 2042 mSDtfsCounter, 1572 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s 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, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:12,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 3607 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 344 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2021-11-25 18:05:12,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5958 states. [2021-11-25 18:05:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5958 to 5950. [2021-11-25 18:05:13,244 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) [2021-11-25 18:05:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 8978 transitions. [2021-11-25 18:05:13,275 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 8978 transitions. Word has length 92 [2021-11-25 18:05:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:13,276 INFO L470 AbstractCegarLoop]: Abstraction has 5950 states and 8978 transitions. [2021-11-25 18:05:13,276 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) [2021-11-25 18:05:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 8978 transitions. [2021-11-25 18:05:13,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-25 18:05:13,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:13,284 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] [2021-11-25 18:05:13,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:05:13,284 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:05:13,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:13,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1501500199, now seen corresponding path program 1 times [2021-11-25 18:05:13,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:13,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039431635] [2021-11-25 18:05:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:13,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-25 18:05:13,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:13,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039431635] [2021-11-25 18:05:13,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039431635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:13,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:13,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:05:13,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030452578] [2021-11-25 18:05:13,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:13,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:05:13,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:13,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:05:13,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:05:13,576 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) [2021-11-25 18:05:18,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:05:30,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:37,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:37,372 INFO L93 Difference]: Finished difference Result 15561 states and 23617 transitions. [2021-11-25 18:05:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 18:05:37,373 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 [2021-11-25 18:05:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:37,447 INFO L225 Difference]: With dead ends: 15561 [2021-11-25 18:05:37,447 INFO L226 Difference]: Without dead ends: 9628 [2021-11-25 18:05:37,488 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 [2021-11-25 18:05:37,489 INFO L933 BasicCegarLoop]: 1623 mSDtfsCounter, 2278 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 6495 mSolverCounterSat, 1429 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2591 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 7926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1429 IncrementalHoareTripleChecker+Valid, 6495 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:37,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2591 Valid, 3213 Invalid, 7926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1429 Valid, 6495 Invalid, 2 Unknown, 0 Unchecked, 22.9s Time] [2021-11-25 18:05:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9628 states. [2021-11-25 18:05:38,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9628 to 9554. [2021-11-25 18:05:38,074 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) [2021-11-25 18:05:38,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9554 states to 9554 states and 14384 transitions. [2021-11-25 18:05:38,129 INFO L78 Accepts]: Start accepts. Automaton has 9554 states and 14384 transitions. Word has length 135 [2021-11-25 18:05:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:38,129 INFO L470 AbstractCegarLoop]: Abstraction has 9554 states and 14384 transitions. [2021-11-25 18:05:38,129 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) [2021-11-25 18:05:38,130 INFO L276 IsEmpty]: Start isEmpty. Operand 9554 states and 14384 transitions. [2021-11-25 18:05:38,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-25 18:05:38,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:38,141 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] [2021-11-25 18:05:38,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:05:38,142 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:05:38,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:38,142 INFO L85 PathProgramCache]: Analyzing trace with hash 685955789, now seen corresponding path program 1 times [2021-11-25 18:05:38,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:38,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323467094] [2021-11-25 18:05:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:38,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-25 18:05:38,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:38,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323467094] [2021-11-25 18:05:38,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323467094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:38,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:38,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:05:38,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132852665] [2021-11-25 18:05:38,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:38,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:05:38,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:38,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:05:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:05:38,437 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) [2021-11-25 18:05:43,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:05:54,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:00,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:00,925 INFO L93 Difference]: Finished difference Result 27087 states and 41563 transitions. [2021-11-25 18:06:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 18:06:00,926 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 [2021-11-25 18:06:00,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:01,020 INFO L225 Difference]: With dead ends: 27087 [2021-11-25 18:06:01,020 INFO L226 Difference]: Without dead ends: 17550 [2021-11-25 18:06:01,078 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 [2021-11-25 18:06:01,079 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 2278 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 6524 mSolverCounterSat, 1430 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 7956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 6524 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:01,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2593 Valid, 3256 Invalid, 7956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1430 Valid, 6524 Invalid, 2 Unknown, 0 Unchecked, 21.6s Time] [2021-11-25 18:06:01,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17550 states. [2021-11-25 18:06:02,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17550 to 17279. [2021-11-25 18:06:02,153 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) [2021-11-25 18:06:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17279 states to 17279 states and 26214 transitions. [2021-11-25 18:06:02,250 INFO L78 Accepts]: Start accepts. Automaton has 17279 states and 26214 transitions. Word has length 136 [2021-11-25 18:06:02,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:02,251 INFO L470 AbstractCegarLoop]: Abstraction has 17279 states and 26214 transitions. [2021-11-25 18:06:02,251 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) [2021-11-25 18:06:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 17279 states and 26214 transitions. [2021-11-25 18:06:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-25 18:06:02,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:02,267 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] [2021-11-25 18:06:02,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:06:02,267 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:06:02,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:02,268 INFO L85 PathProgramCache]: Analyzing trace with hash 750317142, now seen corresponding path program 1 times [2021-11-25 18:06:02,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:02,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819713528] [2021-11-25 18:06:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:02,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-25 18:06:02,524 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:02,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819713528] [2021-11-25 18:06:02,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819713528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:02,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:02,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:06:02,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329863315] [2021-11-25 18:06:02,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:02,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:06:02,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:02,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:06:02,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:06:02,526 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) [2021-11-25 18:06:06,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:06:15,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:22,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:22,542 INFO L93 Difference]: Finished difference Result 34525 states and 53152 transitions. [2021-11-25 18:06:22,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 18:06:22,543 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 [2021-11-25 18:06:22,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:22,765 INFO L225 Difference]: With dead ends: 34525 [2021-11-25 18:06:22,766 INFO L226 Difference]: Without dead ends: 17032 [2021-11-25 18:06:22,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:06:22,830 INFO L933 BasicCegarLoop]: 1473 mSDtfsCounter, 2267 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 5822 mSolverCounterSat, 1396 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2583 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 7220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1396 IncrementalHoareTripleChecker+Valid, 5822 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:22,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2583 Valid, 2680 Invalid, 7220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1396 Valid, 5822 Invalid, 2 Unknown, 0 Unchecked, 19.1s Time] [2021-11-25 18:06:22,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17032 states. [2021-11-25 18:06:23,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17032 to 17004. [2021-11-25 18:06:23,769 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) [2021-11-25 18:06:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17004 states to 17004 states and 25375 transitions. [2021-11-25 18:06:24,061 INFO L78 Accepts]: Start accepts. Automaton has 17004 states and 25375 transitions. Word has length 143 [2021-11-25 18:06:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:24,062 INFO L470 AbstractCegarLoop]: Abstraction has 17004 states and 25375 transitions. [2021-11-25 18:06:24,062 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) [2021-11-25 18:06:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 17004 states and 25375 transitions. [2021-11-25 18:06:24,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 18:06:24,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:24,074 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] [2021-11-25 18:06:24,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:06:24,074 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:06:24,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:24,075 INFO L85 PathProgramCache]: Analyzing trace with hash 230465017, now seen corresponding path program 1 times [2021-11-25 18:06:24,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:24,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745155870] [2021-11-25 18:06:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:24,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-25 18:06:24,544 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:24,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745155870] [2021-11-25 18:06:24,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745155870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:24,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:24,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:06:24,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238197739] [2021-11-25 18:06:24,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:24,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:06:24,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:24,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:06:24,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:06:24,546 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) [2021-11-25 18:06:28,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:06:40,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:47,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:47,387 INFO L93 Difference]: Finished difference Result 50543 states and 75726 transitions. [2021-11-25 18:06:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 18:06:47,388 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 [2021-11-25 18:06:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:47,571 INFO L225 Difference]: With dead ends: 50543 [2021-11-25 18:06:47,572 INFO L226 Difference]: Without dead ends: 33537 [2021-11-25 18:06:47,643 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 [2021-11-25 18:06:47,645 INFO L933 BasicCegarLoop]: 1617 mSDtfsCounter, 2278 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 6482 mSolverCounterSat, 1419 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 7903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1419 IncrementalHoareTripleChecker+Valid, 6482 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:47,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2593 Valid, 3195 Invalid, 7903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1419 Valid, 6482 Invalid, 2 Unknown, 0 Unchecked, 21.3s Time] [2021-11-25 18:06:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33537 states. [2021-11-25 18:06:49,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33537 to 33227. [2021-11-25 18:06:49,570 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) [2021-11-25 18:06:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33227 states to 33227 states and 48819 transitions. [2021-11-25 18:06:50,015 INFO L78 Accepts]: Start accepts. Automaton has 33227 states and 48819 transitions. Word has length 138 [2021-11-25 18:06:50,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:50,018 INFO L470 AbstractCegarLoop]: Abstraction has 33227 states and 48819 transitions. [2021-11-25 18:06:50,018 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) [2021-11-25 18:06:50,019 INFO L276 IsEmpty]: Start isEmpty. Operand 33227 states and 48819 transitions. [2021-11-25 18:06:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-25 18:06:50,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:50,036 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] [2021-11-25 18:06:50,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:06:50,037 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:06:50,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:50,037 INFO L85 PathProgramCache]: Analyzing trace with hash -486279964, now seen corresponding path program 1 times [2021-11-25 18:06:50,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:50,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162525854] [2021-11-25 18:06:50,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:50,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-25 18:06:50,194 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:50,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162525854] [2021-11-25 18:06:50,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162525854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:50,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:50,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:06:50,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396993524] [2021-11-25 18:06:50,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:50,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:06:50,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:50,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:06:50,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:06:50,197 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) [2021-11-25 18:06:52,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:06:56,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:58,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:58,311 INFO L93 Difference]: Finished difference Result 96801 states and 141734 transitions. [2021-11-25 18:06:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:06:58,311 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 [2021-11-25 18:06:58,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:58,895 INFO L225 Difference]: With dead ends: 96801 [2021-11-25 18:06:58,895 INFO L226 Difference]: Without dead ends: 63591 [2021-11-25 18:06:59,016 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 [2021-11-25 18:06:59,017 INFO L933 BasicCegarLoop]: 2050 mSDtfsCounter, 1428 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s 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, 5.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:59,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1429 Valid, 3600 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 359 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2021-11-25 18:06:59,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63591 states. [2021-11-25 18:07:02,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63591 to 63562. [2021-11-25 18:07:02,519 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) [2021-11-25 18:07:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63562 states to 63562 states and 92876 transitions. [2021-11-25 18:07:03,160 INFO L78 Accepts]: Start accepts. Automaton has 63562 states and 92876 transitions. Word has length 139 [2021-11-25 18:07:03,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:03,161 INFO L470 AbstractCegarLoop]: Abstraction has 63562 states and 92876 transitions. [2021-11-25 18:07:03,161 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) [2021-11-25 18:07:03,162 INFO L276 IsEmpty]: Start isEmpty. Operand 63562 states and 92876 transitions. [2021-11-25 18:07:03,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-25 18:07:03,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:03,180 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] [2021-11-25 18:07:03,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:07:03,181 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:07:03,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:03,182 INFO L85 PathProgramCache]: Analyzing trace with hash 750596287, now seen corresponding path program 1 times [2021-11-25 18:07:03,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:03,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339310930] [2021-11-25 18:07:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:03,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-25 18:07:03,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:03,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339310930] [2021-11-25 18:07:03,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339310930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:03,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:03,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:07:03,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249966190] [2021-11-25 18:07:03,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:03,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:07:03,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:03,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:07:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:07:03,346 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) [2021-11-25 18:07:05,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:12,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:14,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:14,191 INFO L93 Difference]: Finished difference Result 186849 states and 271790 transitions. [2021-11-25 18:07:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:07:14,192 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 [2021-11-25 18:07:14,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:15,255 INFO L225 Difference]: With dead ends: 186849 [2021-11-25 18:07:15,256 INFO L226 Difference]: Without dead ends: 123304 [2021-11-25 18:07:15,447 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 [2021-11-25 18:07:15,448 INFO L933 BasicCegarLoop]: 2119 mSDtfsCounter, 1515 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s 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, 5.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:15,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 3642 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 363 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2021-11-25 18:07:15,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123304 states. [2021-11-25 18:07:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123304 to 123279. [2021-11-25 18:07:21,576 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) [2021-11-25 18:07:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123279 states to 123279 states and 178853 transitions. [2021-11-25 18:07:22,519 INFO L78 Accepts]: Start accepts. Automaton has 123279 states and 178853 transitions. Word has length 136 [2021-11-25 18:07:22,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:22,520 INFO L470 AbstractCegarLoop]: Abstraction has 123279 states and 178853 transitions. [2021-11-25 18:07:22,520 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) [2021-11-25 18:07:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 123279 states and 178853 transitions. [2021-11-25 18:07:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-25 18:07:22,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:22,538 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] [2021-11-25 18:07:22,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:07:22,539 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:07:22,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:22,539 INFO L85 PathProgramCache]: Analyzing trace with hash 734400207, now seen corresponding path program 1 times [2021-11-25 18:07:22,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:22,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797536711] [2021-11-25 18:07:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:22,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:22,686 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-25 18:07:22,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:22,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797536711] [2021-11-25 18:07:22,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797536711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:22,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:22,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:07:22,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527202040] [2021-11-25 18:07:22,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:22,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:07:22,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:07:22,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:07:22,689 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), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-25 18:07:25,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:30,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:31,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:31,791 INFO L93 Difference]: Finished difference Result 133403 states and 191899 transitions. [2021-11-25 18:07:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:07:31,792 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), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2021-11-25 18:07:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:32,081 INFO L225 Difference]: With dead ends: 133403 [2021-11-25 18:07:32,082 INFO L226 Difference]: Without dead ends: 62103 [2021-11-25 18:07:32,521 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 [2021-11-25 18:07:32,522 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 [2021-11-25 18:07:32,522 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] [2021-11-25 18:07:32,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62103 states.