./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-wireless-ipw2x00-ipw2100.cil.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_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/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_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-wireless-ipw2x00-ipw2100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/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_72e4c565-9431-47dc-8ef0-3aa8c48780fe/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 3175a50fddc095ad7f0b830e9cbc7a53388765b43a39b66b2d6d21a3494a6307 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:10:24,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:10:24,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:10:24,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:10:24,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:10:24,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:10:24,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:10:24,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:10:24,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:10:24,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:10:24,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:10:24,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:10:24,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:10:24,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:10:24,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:10:24,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:10:24,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:10:24,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:10:24,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:10:24,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:10:24,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:10:24,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:10:24,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:10:24,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:10:24,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:10:24,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:10:24,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:10:24,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:10:24,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:10:24,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:10:24,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:10:24,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:10:24,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:10:24,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:10:24,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:10:24,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:10:24,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:10:24,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:10:24,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:10:24,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:10:24,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:10:24,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:10:24,184 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:10:24,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:10:24,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:10:24,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:10:24,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:10:24,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:10:24,189 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:10:24,190 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:10:24,190 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:10:24,190 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:10:24,191 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:10:24,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:10:24,192 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:10:24,192 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:10:24,192 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:10:24,193 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:10:24,193 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:10:24,193 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:10:24,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:10:24,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:10:24,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:10:24,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:10:24,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:10:24,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:10:24,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:10:24,195 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:10:24,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:10:24,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:10:24,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:10:24,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:10:24,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:10:24,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:10:24,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:10:24,200 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:10:24,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:10:24,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:10:24,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:10:24,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:10:24,201 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_72e4c565-9431-47dc-8ef0-3aa8c48780fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3175a50fddc095ad7f0b830e9cbc7a53388765b43a39b66b2d6d21a3494a6307 [2021-11-25 18:10:24,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:10:24,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:10:24,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:10:24,498 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:10:24,499 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:10:24,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 18:10:24,558 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/data/638f34210/063f5f07574e4ff599958ea063dc8f56/FLAG6a68a3570 [2021-11-25 18:10:25,756 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:10:25,757 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 18:10:25,838 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/data/638f34210/063f5f07574e4ff599958ea063dc8f56/FLAG6a68a3570 [2021-11-25 18:10:25,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/data/638f34210/063f5f07574e4ff599958ea063dc8f56 [2021-11-25 18:10:25,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:10:25,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:10:25,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:10:25,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:10:25,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:10:25,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:10:25" (1/1) ... [2021-11-25 18:10:25,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14709018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:25, skipping insertion in model container [2021-11-25 18:10:25,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:10:25" (1/1) ... [2021-11-25 18:10:25,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:10:26,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:10:32,941 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_72e4c565-9431-47dc-8ef0-3aa8c48780fe/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-wireless-ipw2x00-ipw2100.cil.i[747166,747179] [2021-11-25 18:10:32,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:10:33,056 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:10:33,910 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_72e4c565-9431-47dc-8ef0-3aa8c48780fe/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-wireless-ipw2x00-ipw2100.cil.i[747166,747179] [2021-11-25 18:10:33,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:10:34,266 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:10:34,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:34 WrapperNode [2021-11-25 18:10:34,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:10:34,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:10:34,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:10:34,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:10:34,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:34" (1/1) ... [2021-11-25 18:10:34,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:34" (1/1) ... [2021-11-25 18:10:35,068 INFO L137 Inliner]: procedures = 602, calls = 11474, calls flagged for inlining = 305, calls inlined = 243, statements flattened = 12781 [2021-11-25 18:10:35,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:10:35,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:10:35,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:10:35,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:10:35,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:34" (1/1) ... [2021-11-25 18:10:35,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:34" (1/1) ... [2021-11-25 18:10:35,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:34" (1/1) ... [2021-11-25 18:10:35,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:34" (1/1) ... [2021-11-25 18:10:35,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:34" (1/1) ... [2021-11-25 18:10:35,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:34" (1/1) ... [2021-11-25 18:10:35,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:34" (1/1) ... [2021-11-25 18:10:36,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:10:36,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:10:36,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:10:36,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:10:36,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:34" (1/1) ... [2021-11-25 18:10:36,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:10:36,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:10:36,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:10:36,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:10:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 18:10:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 18:10:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:10:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:10:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2021-11-25 18:10:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2021-11-25 18:10:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2021-11-25 18:10:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2021-11-25 18:10:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2021-11-25 18:10:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2021-11-25 18:10:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:10:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:10:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 18:10:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 18:10:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-25 18:10:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-25 18:10:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2021-11-25 18:10:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2021-11-25 18:10:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2021-11-25 18:10:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2021-11-25 18:10:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 18:10:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 18:10:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 18:10:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 18:10:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2021-11-25 18:10:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2021-11-25 18:10:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2021-11-25 18:10:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2021-11-25 18:10:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 18:10:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 18:10:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:10:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:10:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 18:10:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 18:10:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:10:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:10:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:10:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:10:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:10:36,421 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:10:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2021-11-25 18:10:36,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2021-11-25 18:10:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:10:36,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:10:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 18:10:36,422 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 18:10:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2021-11-25 18:10:36,423 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2021-11-25 18:10:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2021-11-25 18:10:36,423 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2021-11-25 18:10:36,424 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2021-11-25 18:10:36,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2021-11-25 18:10:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 18:10:36,425 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 18:10:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:10:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2021-11-25 18:10:36,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2021-11-25 18:10:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 18:10:36,426 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 18:10:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2021-11-25 18:10:36,427 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2021-11-25 18:10:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 18:10:36,427 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 18:10:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure isr_scan_complete [2021-11-25 18:10:36,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_scan_complete [2021-11-25 18:10:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2021-11-25 18:10:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2021-11-25 18:10:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:10:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:10:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2021-11-25 18:10:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2021-11-25 18:10:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 18:10:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 18:10:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-25 18:10:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-25 18:10:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:10:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 18:10:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 18:10:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 18:10:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 18:10:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:10:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2021-11-25 18:10:36,432 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2021-11-25 18:10:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:10:36,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:10:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2021-11-25 18:10:36,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2021-11-25 18:10:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:10:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 18:10:36,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 18:10:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2021-11-25 18:10:36,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2021-11-25 18:10:36,435 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2021-11-25 18:10:36,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2021-11-25 18:10:36,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:10:36,435 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:10:36,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:10:36,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:10:36,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:10:36,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:10:36,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:10:36,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:10:36,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2021-11-25 18:10:36,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2021-11-25 18:10:36,437 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 18:10:36,437 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 18:10:36,437 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 18:10:36,438 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 18:10:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2021-11-25 18:10:36,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2021-11-25 18:10:36,439 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 18:10:36,439 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 18:10:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2021-11-25 18:10:36,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2021-11-25 18:10:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2021-11-25 18:10:36,442 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2021-11-25 18:10:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2021-11-25 18:10:36,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2021-11-25 18:10:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:10:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:10:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:10:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:10:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:10:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:10:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2021-11-25 18:10:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2021-11-25 18:10:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:10:36,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:10:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2021-11-25 18:10:36,453 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2021-11-25 18:10:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 18:10:36,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 18:10:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:10:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-25 18:10:36,454 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-25 18:10:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:10:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2021-11-25 18:10:36,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2021-11-25 18:10:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:10:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:10:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2021-11-25 18:10:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2021-11-25 18:10:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 18:10:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 18:10:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2021-11-25 18:10:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2021-11-25 18:10:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 18:10:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 18:10:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:10:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:10:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2021-11-25 18:10:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2021-11-25 18:10:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2021-11-25 18:10:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2021-11-25 18:10:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-25 18:10:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-25 18:10:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2021-11-25 18:10:36,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2021-11-25 18:10:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-25 18:10:36,458 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-25 18:10:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:10:36,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:10:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-25 18:10:36,459 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-25 18:10:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2021-11-25 18:10:36,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2021-11-25 18:10:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2021-11-25 18:10:36,460 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2021-11-25 18:10:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 18:10:36,460 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 18:10:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:10:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:10:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:10:36,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:10:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2021-11-25 18:10:36,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2021-11-25 18:10:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 18:10:36,461 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 18:10:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2021-11-25 18:10:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2021-11-25 18:10:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2021-11-25 18:10:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2021-11-25 18:10:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2021-11-25 18:10:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2021-11-25 18:10:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2021-11-25 18:10:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2021-11-25 18:10:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 18:10:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 18:10:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2021-11-25 18:10:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2021-11-25 18:10:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2021-11-25 18:10:36,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2021-11-25 18:10:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2021-11-25 18:10:36,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2021-11-25 18:10:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_rf_kill [2021-11-25 18:10:36,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_rf_kill [2021-11-25 18:10:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:10:36,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:10:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:10:36,465 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:10:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2021-11-25 18:10:36,465 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2021-11-25 18:10:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2021-11-25 18:10:36,466 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2021-11-25 18:10:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 18:10:36,466 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 18:10:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:10:36,466 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:10:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:10:36,467 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:10:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2021-11-25 18:10:36,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2021-11-25 18:10:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 18:10:36,467 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 18:10:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 18:10:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 18:10:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 18:10:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 18:10:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 18:10:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 18:10:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:10:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2021-11-25 18:10:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2021-11-25 18:10:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:10:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:10:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2021-11-25 18:10:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2021-11-25 18:10:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:10:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2021-11-25 18:10:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2021-11-25 18:10:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_association_lost [2021-11-25 18:10:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_association_lost [2021-11-25 18:10:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2021-11-25 18:10:36,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2021-11-25 18:10:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2021-11-25 18:10:36,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2021-11-25 18:10:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2021-11-25 18:10:36,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2021-11-25 18:10:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-25 18:10:36,476 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-25 18:10:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:10:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2021-11-25 18:10:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2021-11-25 18:10:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 18:10:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 18:10:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 18:10:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 18:10:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2021-11-25 18:10:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2021-11-25 18:10:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2021-11-25 18:10:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2021-11-25 18:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:10:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:10:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2021-11-25 18:10:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2021-11-25 18:10:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:10:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:10:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 18:10:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 18:10:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 18:10:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 18:10:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2021-11-25 18:10:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2021-11-25 18:10:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2021-11-25 18:10:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2021-11-25 18:10:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2021-11-25 18:10:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2021-11-25 18:10:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-25 18:10:36,484 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-25 18:10:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2021-11-25 18:10:36,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2021-11-25 18:10:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 18:10:36,484 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 18:10:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-25 18:10:36,484 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-25 18:10:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:10:36,485 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:10:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-25 18:10:36,485 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-25 18:10:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2021-11-25 18:10:36,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2021-11-25 18:10:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2021-11-25 18:10:36,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2021-11-25 18:10:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-25 18:10:36,486 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-25 18:10:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:10:36,486 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:10:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:10:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2021-11-25 18:10:36,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2021-11-25 18:10:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:10:36,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:10:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2021-11-25 18:10:36,487 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2021-11-25 18:10:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2021-11-25 18:10:36,488 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2021-11-25 18:10:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 18:10:36,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 18:10:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2021-11-25 18:10:36,488 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2021-11-25 18:10:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 18:10:36,489 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 18:10:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2021-11-25 18:10:36,489 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2021-11-25 18:10:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 18:10:36,489 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 18:10:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 18:10:36,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 18:10:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2021-11-25 18:10:36,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2021-11-25 18:10:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:10:36,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:10:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 18:10:36,490 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 18:10:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 18:10:36,491 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 18:10:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 18:10:36,491 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 18:10:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 18:10:36,491 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 18:10:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2021-11-25 18:10:36,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2021-11-25 18:10:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 18:10:36,492 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 18:10:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2021-11-25 18:10:36,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2021-11-25 18:10:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 18:10:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2021-11-25 18:10:36,493 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2021-11-25 18:10:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_associated [2021-11-25 18:10:36,493 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_associated [2021-11-25 18:10:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:10:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_scanning [2021-11-25 18:10:36,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_scanning [2021-11-25 18:10:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2021-11-25 18:10:36,494 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2021-11-25 18:10:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:10:36,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:10:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 18:10:36,494 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 18:10:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2021-11-25 18:10:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2021-11-25 18:10:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2021-11-25 18:10:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2021-11-25 18:10:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-25 18:10:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-25 18:10:37,848 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:10:37,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:10:52,020 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:13:13,975 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:13:14,093 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:13:18,632 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:13:18,632 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 18:13:18,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:13:18 BoogieIcfgContainer [2021-11-25 18:13:18,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:13:18,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:13:18,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:13:18,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:13:18,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:10:25" (1/3) ... [2021-11-25 18:13:18,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dea2feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:13:18, skipping insertion in model container [2021-11-25 18:13:18,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:34" (2/3) ... [2021-11-25 18:13:18,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dea2feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:13:18, skipping insertion in model container [2021-11-25 18:13:18,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:13:18" (3/3) ... [2021-11-25 18:13:18,652 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 18:13:18,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:13:18,657 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:13:18,723 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:13:18,730 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 18:13:18,730 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:13:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 2798 states, 1759 states have (on average 1.3388288800454804) internal successors, (2355), 1774 states have internal predecessors, (2355), 874 states have call successors, (874), 165 states have call predecessors, (874), 164 states have return successors, (868), 866 states have call predecessors, (868), 868 states have call successors, (868) [2021-11-25 18:13:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-25 18:13:18,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:13:18,848 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 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] [2021-11-25 18:13:18,849 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:13:18,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:13:18,854 INFO L85 PathProgramCache]: Analyzing trace with hash -722843440, now seen corresponding path program 1 times [2021-11-25 18:13:18,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:13:18,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47390480] [2021-11-25 18:13:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:13:18,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:13:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:13:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2021-11-25 18:13:20,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:13:20,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47390480] [2021-11-25 18:13:20,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47390480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:13:20,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:13:20,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:13:20,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088995215] [2021-11-25 18:13:20,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:13:20,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:13:20,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:13:20,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:13:20,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:13:20,757 INFO L87 Difference]: Start difference. First operand has 2798 states, 1759 states have (on average 1.3388288800454804) internal successors, (2355), 1774 states have internal predecessors, (2355), 874 states have call successors, (874), 165 states have call predecessors, (874), 164 states have return successors, (868), 866 states have call predecessors, (868), 868 states have call successors, (868) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 18:13:24,500 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 18:13:26,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:13:29,768 WARN L534 Checker$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 18:13:32,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:34,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:36,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:39,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:43,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:46,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:48,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:50,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:53,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:55,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:57,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:58,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:13:58,299 INFO L93 Difference]: Finished difference Result 7848 states and 11499 transitions. [2021-11-25 18:13:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:13:58,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 183 [2021-11-25 18:13:58,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:13:58,375 INFO L225 Difference]: With dead ends: 7848 [2021-11-25 18:13:58,375 INFO L226 Difference]: Without dead ends: 5073 [2021-11-25 18:13:58,400 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 18:13:58,404 INFO L933 BasicCegarLoop]: 4297 mSDtfsCounter, 3342 mSDsluCounter, 4017 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 14 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3347 SdHoareTripleChecker+Valid, 7834 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:13:58,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3347 Valid, 7834 Invalid, 1061 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 1035 Invalid, 12 Unknown, 0 Unchecked, 37.0s Time] [2021-11-25 18:13:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5073 states. [2021-11-25 18:13:58,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5073 to 5067. [2021-11-25 18:13:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5067 states, 3183 states have (on average 1.3323908262645303) internal successors, (4241), 3217 states have internal predecessors, (4241), 1573 states have call successors, (1573), 311 states have call predecessors, (1573), 310 states have return successors, (1575), 1562 states have call predecessors, (1575), 1570 states have call successors, (1575) [2021-11-25 18:13:58,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5067 states to 5067 states and 7389 transitions. [2021-11-25 18:13:58,839 INFO L78 Accepts]: Start accepts. Automaton has 5067 states and 7389 transitions. Word has length 183 [2021-11-25 18:13:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:13:58,840 INFO L470 AbstractCegarLoop]: Abstraction has 5067 states and 7389 transitions. [2021-11-25 18:13:58,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 18:13:58,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5067 states and 7389 transitions. [2021-11-25 18:13:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-25 18:13:58,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:13:58,856 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:13:58,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:13:58,856 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:13:58,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:13:58,857 INFO L85 PathProgramCache]: Analyzing trace with hash -402432475, now seen corresponding path program 1 times [2021-11-25 18:13:58,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:13:58,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698243834] [2021-11-25 18:13:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:13:58,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:13:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:13:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2021-11-25 18:13:59,931 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:13:59,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698243834] [2021-11-25 18:13:59,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698243834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:13:59,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:13:59,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:13:59,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674222655] [2021-11-25 18:13:59,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:13:59,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:13:59,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:13:59,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:13:59,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:13:59,935 INFO L87 Difference]: Start difference. First operand 5067 states and 7389 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 18:14:03,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:14:06,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:14:08,812 WARN L534 Checker$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 18:14:12,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:14,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:14:17,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:18,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:14:21,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:24,840 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:27,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:30,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:32,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:34,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:36,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:38,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:40,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:41,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:14:41,385 INFO L93 Difference]: Finished difference Result 7451 states and 10852 transitions. [2021-11-25 18:14:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:14:41,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 232 [2021-11-25 18:14:41,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:14:41,463 INFO L225 Difference]: With dead ends: 7451 [2021-11-25 18:14:41,464 INFO L226 Difference]: Without dead ends: 7435 [2021-11-25 18:14:41,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:14:41,473 INFO L933 BasicCegarLoop]: 4308 mSDtfsCounter, 3431 mSDsluCounter, 8819 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3434 SdHoareTripleChecker+Valid, 12133 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:14:41,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3434 Valid, 12133 Invalid, 1506 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1497 Invalid, 9 Unknown, 0 Unchecked, 41.0s Time] [2021-11-25 18:14:41,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2021-11-25 18:14:42,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 7434. [2021-11-25 18:14:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7434 states, 4666 states have (on average 1.331118731247321) internal successors, (6211), 4715 states have internal predecessors, (6211), 2306 states have call successors, (2306), 462 states have call predecessors, (2306), 461 states have return successors, (2311), 2292 states have call predecessors, (2311), 2303 states have call successors, (2311) [2021-11-25 18:14:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7434 states to 7434 states and 10828 transitions. [2021-11-25 18:14:42,223 INFO L78 Accepts]: Start accepts. Automaton has 7434 states and 10828 transitions. Word has length 232 [2021-11-25 18:14:42,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:14:42,227 INFO L470 AbstractCegarLoop]: Abstraction has 7434 states and 10828 transitions. [2021-11-25 18:14:42,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 18:14:42,228 INFO L276 IsEmpty]: Start isEmpty. Operand 7434 states and 10828 transitions. [2021-11-25 18:14:42,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-25 18:14:42,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:14:42,253 INFO L514 BasicCegarLoop]: trace histogram [18, 16, 16, 16, 16, 16, 16, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:14:42,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:14:42,254 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:14:42,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:14:42,255 INFO L85 PathProgramCache]: Analyzing trace with hash 47393670, now seen corresponding path program 1 times [2021-11-25 18:14:42,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:14:42,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941056669] [2021-11-25 18:14:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:14:42,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:14:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:14:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-11-25 18:14:43,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:14:43,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941056669] [2021-11-25 18:14:43,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941056669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:14:43,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:14:43,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:14:43,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160009916] [2021-11-25 18:14:43,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:14:43,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:14:43,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:14:43,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:14:43,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:14:43,331 INFO L87 Difference]: Start difference. First operand 7434 states and 10828 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 18:14:46,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:14:47,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:14:50,964 WARN L534 Checker$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 18:14:52,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:55,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:14:57,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:02,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:05,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:07,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:10,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:12,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:15,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:17,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:15:18,008 INFO L93 Difference]: Finished difference Result 19505 states and 28380 transitions. [2021-11-25 18:15:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:15:18,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 246 [2021-11-25 18:15:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:15:18,131 INFO L225 Difference]: With dead ends: 19505 [2021-11-25 18:15:18,131 INFO L226 Difference]: Without dead ends: 12104 [2021-11-25 18:15:18,193 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 18:15:18,194 INFO L933 BasicCegarLoop]: 4320 mSDtfsCounter, 3387 mSDsluCounter, 4048 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 5 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 7880 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:15:18,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3390 Valid, 7880 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1006 Invalid, 9 Unknown, 0 Unchecked, 34.3s Time] [2021-11-25 18:15:18,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12104 states. [2021-11-25 18:15:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12104 to 12092. [2021-11-25 18:15:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12092 states, 7573 states have (on average 1.3282714908226594) internal successors, (10059), 7659 states have internal predecessors, (10059), 3754 states have call successors, (3754), 765 states have call predecessors, (3754), 764 states have return successors, (3765), 3727 states have call predecessors, (3765), 3751 states have call successors, (3765) [2021-11-25 18:15:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12092 states to 12092 states and 17578 transitions. [2021-11-25 18:15:19,047 INFO L78 Accepts]: Start accepts. Automaton has 12092 states and 17578 transitions. Word has length 246 [2021-11-25 18:15:19,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:15:19,049 INFO L470 AbstractCegarLoop]: Abstraction has 12092 states and 17578 transitions. [2021-11-25 18:15:19,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 18:15:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 12092 states and 17578 transitions. [2021-11-25 18:15:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-25 18:15:19,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:15:19,089 INFO L514 BasicCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 6, 6, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:15:19,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:15:19,090 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:15:19,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:15:19,090 INFO L85 PathProgramCache]: Analyzing trace with hash -942293821, now seen corresponding path program 1 times [2021-11-25 18:15:19,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:15:19,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736404519] [2021-11-25 18:15:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:15:19,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:15:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:15:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1264 trivial. 0 not checked. [2021-11-25 18:15:20,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:15:20,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736404519] [2021-11-25 18:15:20,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736404519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:15:20,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:15:20,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:15:20,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479033850] [2021-11-25 18:15:20,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:15:20,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:15:20,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:15:20,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:15:20,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:15:20,057 INFO L87 Difference]: Start difference. First operand 12092 states and 17578 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-25 18:15:25,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:15:26,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:15:30,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:33,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:35,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:15:37,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:40,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:44,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:47,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:50,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:52,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:54,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:57,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:59,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:00,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:16:00,416 INFO L93 Difference]: Finished difference Result 26598 states and 38658 transitions. [2021-11-25 18:16:00,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:16:00,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 315 [2021-11-25 18:16:00,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:16:00,545 INFO L225 Difference]: With dead ends: 26598 [2021-11-25 18:16:00,546 INFO L226 Difference]: Without dead ends: 16787 [2021-11-25 18:16:00,602 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 18:16:00,605 INFO L933 BasicCegarLoop]: 6518 mSDtfsCounter, 3387 mSDsluCounter, 4046 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 4 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 10076 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:16:00,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3390 Valid, 10076 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1448 Invalid, 10 Unknown, 0 Unchecked, 39.8s Time] [2021-11-25 18:16:00,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16787 states. [2021-11-25 18:16:01,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16787 to 16775. [2021-11-25 18:16:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16775 states, 10497 states have (on average 1.3276174144993809) internal successors, (13936), 10620 states have internal predecessors, (13936), 5210 states have call successors, (5210), 1068 states have call predecessors, (5210), 1067 states have return successors, (5227), 5170 states have call predecessors, (5227), 5207 states have call successors, (5227) [2021-11-25 18:16:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16775 states to 16775 states and 24373 transitions. [2021-11-25 18:16:01,554 INFO L78 Accepts]: Start accepts. Automaton has 16775 states and 24373 transitions. Word has length 315 [2021-11-25 18:16:01,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:16:01,556 INFO L470 AbstractCegarLoop]: Abstraction has 16775 states and 24373 transitions. [2021-11-25 18:16:01,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-25 18:16:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16775 states and 24373 transitions. [2021-11-25 18:16:01,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-25 18:16:01,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:16:01,609 INFO L514 BasicCegarLoop]: trace histogram [24, 16, 16, 16, 16, 16, 16, 6, 6, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:16:01,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:16:01,610 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:16:01,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:16:01,611 INFO L85 PathProgramCache]: Analyzing trace with hash -375275080, now seen corresponding path program 1 times [2021-11-25 18:16:01,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:16:01,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518325255] [2021-11-25 18:16:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:01,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:16:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:16:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2021-11-25 18:16:02,528 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:16:02,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518325255] [2021-11-25 18:16:02,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518325255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:16:02,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:16:02,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:16:02,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858815206] [2021-11-25 18:16:02,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:16:02,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:16:02,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:16:02,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:16:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:02,531 INFO L87 Difference]: Start difference. First operand 16775 states and 24373 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-25 18:16:06,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:16:09,271 WARN L534 Checker$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 18:16:12,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:15,405 WARN L534 Checker$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 18:16:18,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:20,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:23,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:24,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:28,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:31,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:34,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:36,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:38,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:41,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:43,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:44,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:16:44,243 INFO L93 Difference]: Finished difference Result 40382 states and 58684 transitions. [2021-11-25 18:16:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:16:44,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 339 [2021-11-25 18:16:44,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:16:44,726 INFO L225 Difference]: With dead ends: 40382 [2021-11-25 18:16:44,726 INFO L226 Difference]: Without dead ends: 25888 [2021-11-25 18:16:44,788 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 18:16:44,789 INFO L933 BasicCegarLoop]: 6417 mSDtfsCounter, 3295 mSDsluCounter, 4021 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 9 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3301 SdHoareTripleChecker+Valid, 9955 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:16:44,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3301 Valid, 9955 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1441 Invalid, 12 Unknown, 0 Unchecked, 41.0s Time] [2021-11-25 18:16:44,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25888 states. [2021-11-25 18:16:46,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25888 to 25871. [2021-11-25 18:16:46,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25871 states, 16195 states have (on average 1.327384995368941) internal successors, (21497), 16386 states have internal predecessors, (21497), 8022 states have call successors, (8022), 1654 states have call predecessors, (8022), 1653 states have return successors, (8055), 7962 states have call predecessors, (8055), 8019 states have call successors, (8055) [2021-11-25 18:16:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25871 states to 25871 states and 37574 transitions. [2021-11-25 18:16:46,271 INFO L78 Accepts]: Start accepts. Automaton has 25871 states and 37574 transitions. Word has length 339 [2021-11-25 18:16:46,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:16:46,275 INFO L470 AbstractCegarLoop]: Abstraction has 25871 states and 37574 transitions. [2021-11-25 18:16:46,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-25 18:16:46,275 INFO L276 IsEmpty]: Start isEmpty. Operand 25871 states and 37574 transitions. [2021-11-25 18:16:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2021-11-25 18:16:46,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:16:46,360 INFO L514 BasicCegarLoop]: trace histogram [25, 16, 16, 16, 16, 16, 16, 7, 7, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:16:46,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:16:46,360 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:16:46,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:16:46,361 INFO L85 PathProgramCache]: Analyzing trace with hash 967055236, now seen corresponding path program 1 times [2021-11-25 18:16:46,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:16:46,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557299069] [2021-11-25 18:16:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:46,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:16:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:16:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1468 trivial. 0 not checked. [2021-11-25 18:16:47,635 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:16:47,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557299069] [2021-11-25 18:16:47,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557299069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:16:47,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:16:47,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:16:47,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182216047] [2021-11-25 18:16:47,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:16:47,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:16:47,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:16:47,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:16:47,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:47,638 INFO L87 Difference]: Start difference. First operand 25871 states and 37574 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-25 18:16:51,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:16:54,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:16:57,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:00,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:03,472 WARN L534 Checker$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 18:17:05,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:08,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:12,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:15,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:18,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:20,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:22,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:25,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:27,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:28,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:28,339 INFO L93 Difference]: Finished difference Result 62814 states and 91240 transitions. [2021-11-25 18:17:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:17:28,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 359 [2021-11-25 18:17:28,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:28,656 INFO L225 Difference]: With dead ends: 62814 [2021-11-25 18:17:28,656 INFO L226 Difference]: Without dead ends: 39224 [2021-11-25 18:17:28,746 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 18:17:28,748 INFO L933 BasicCegarLoop]: 6411 mSDtfsCounter, 3225 mSDsluCounter, 4021 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 8 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3233 SdHoareTripleChecker+Valid, 9949 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:28,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3233 Valid, 9949 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1440 Invalid, 13 Unknown, 0 Unchecked, 39.7s Time] [2021-11-25 18:17:28,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39224 states. [2021-11-25 18:17:30,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39224 to 39199. [2021-11-25 18:17:30,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39199 states, 24547 states have (on average 1.3274941948099563) internal successors, (32586), 24834 states have internal predecessors, (32586), 12134 states have call successors, (12134), 2524 states have call predecessors, (12134), 2517 states have return successors, (12191), 12044 states have call predecessors, (12191), 12131 states have call successors, (12191) [2021-11-25 18:17:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39199 states to 39199 states and 56911 transitions. [2021-11-25 18:17:31,296 INFO L78 Accepts]: Start accepts. Automaton has 39199 states and 56911 transitions. Word has length 359 [2021-11-25 18:17:31,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:31,297 INFO L470 AbstractCegarLoop]: Abstraction has 39199 states and 56911 transitions. [2021-11-25 18:17:31,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-25 18:17:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 39199 states and 56911 transitions. [2021-11-25 18:17:31,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2021-11-25 18:17:31,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:31,545 INFO L514 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 11, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:31,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:17:31,546 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:17:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1296478718, now seen corresponding path program 1 times [2021-11-25 18:17:31,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:31,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111297738] [2021-11-25 18:17:31,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:31,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-25 18:17:33,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:33,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111297738] [2021-11-25 18:17:33,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111297738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:33,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:33,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:17:33,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761765336] [2021-11-25 18:17:33,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:33,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:17:33,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:33,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:17:33,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:17:33,166 INFO L87 Difference]: Start difference. First operand 39199 states and 56911 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2021-11-25 18:17:38,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:17:41,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:17:43,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:46,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:48,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:49,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:51,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:55,824 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:58,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:01,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:03,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:06,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:08,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:10,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:11,647 INFO L93 Difference]: Finished difference Result 102090 states and 148324 transitions. [2021-11-25 18:18:11,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:18:11,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) Word has length 398 [2021-11-25 18:18:11,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:12,223 INFO L225 Difference]: With dead ends: 102090 [2021-11-25 18:18:12,223 INFO L226 Difference]: Without dead ends: 62924 [2021-11-25 18:18:12,393 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 18:18:12,395 INFO L933 BasicCegarLoop]: 4266 mSDtfsCounter, 2349 mSDsluCounter, 4011 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 16 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 7796 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:18:12,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2350 Valid, 7796 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1080 Invalid, 11 Unknown, 0 Unchecked, 36.6s Time] [2021-11-25 18:18:12,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62924 states. [2021-11-25 18:18:14,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62924 to 62910. [2021-11-25 18:18:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62910 states, 40003 states have (on average 1.3322750793690474) internal successors, (53295), 40363 states have internal predecessors, (53295), 18909 states have call successors, (18909), 4013 states have call predecessors, (18909), 3997 states have return successors, (18990), 18776 states have call predecessors, (18990), 18906 states have call successors, (18990) [2021-11-25 18:18:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62910 states to 62910 states and 91194 transitions. [2021-11-25 18:18:15,750 INFO L78 Accepts]: Start accepts. Automaton has 62910 states and 91194 transitions. Word has length 398 [2021-11-25 18:18:15,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:15,751 INFO L470 AbstractCegarLoop]: Abstraction has 62910 states and 91194 transitions. [2021-11-25 18:18:15,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2021-11-25 18:18:15,752 INFO L276 IsEmpty]: Start isEmpty. Operand 62910 states and 91194 transitions. [2021-11-25 18:18:15,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2021-11-25 18:18:15,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:15,847 INFO L514 BasicCegarLoop]: trace histogram [26, 16, 16, 16, 16, 16, 16, 8, 8, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:15,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:18:15,848 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:15,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:15,848 INFO L85 PathProgramCache]: Analyzing trace with hash -591168000, now seen corresponding path program 1 times [2021-11-25 18:18:15,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:15,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588142293] [2021-11-25 18:18:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:15,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1621 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 1574 trivial. 0 not checked. [2021-11-25 18:18:16,840 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:16,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588142293] [2021-11-25 18:18:16,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588142293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:16,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:18:16,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:18:16,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135439255] [2021-11-25 18:18:16,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:16,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:18:16,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:16,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:18:16,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:18:16,843 INFO L87 Difference]: Start difference. First operand 62910 states and 91194 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-25 18:18:26,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:18:28,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:31,281 WARN L534 Checker$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 18:18:33,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:35,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:36,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:38,216 WARN L534 Checker$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 18:18:43,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:46,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:48,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:51,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:54,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:56,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:58,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:59,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:59,672 INFO L93 Difference]: Finished difference Result 147460 states and 213745 transitions. [2021-11-25 18:18:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:18:59,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 379 [2021-11-25 18:18:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:19:00,215 INFO L225 Difference]: With dead ends: 147460 [2021-11-25 18:19:00,216 INFO L226 Difference]: Without dead ends: 86077 [2021-11-25 18:19:00,398 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 18:19:00,398 INFO L933 BasicCegarLoop]: 6503 mSDtfsCounter, 3341 mSDsluCounter, 4023 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 7 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3344 SdHoareTripleChecker+Valid, 10041 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:19:00,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3344 Valid, 10041 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1460 Invalid, 11 Unknown, 0 Unchecked, 40.3s Time] [2021-11-25 18:19:00,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86077 states. [2021-11-25 18:19:03,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86077 to 86076. [2021-11-25 18:19:03,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86076 states, 54741 states have (on average 1.3312507992181364) internal successors, (72874), 55209 states have internal predecessors, (72874), 25855 states have call successors, (25855), 5495 states have call predecessors, (25855), 5479 states have return successors, (25960), 25704 states have call predecessors, (25960), 25852 states have call successors, (25960) [2021-11-25 18:19:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86076 states to 86076 states and 124689 transitions. [2021-11-25 18:19:04,508 INFO L78 Accepts]: Start accepts. Automaton has 86076 states and 124689 transitions. Word has length 379 [2021-11-25 18:19:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:19:04,509 INFO L470 AbstractCegarLoop]: Abstraction has 86076 states and 124689 transitions. [2021-11-25 18:19:04,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-25 18:19:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 86076 states and 124689 transitions. [2021-11-25 18:19:04,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2021-11-25 18:19:04,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:19:04,649 INFO L514 BasicCegarLoop]: trace histogram [27, 16, 16, 16, 16, 16, 16, 9, 9, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:19:04,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:19:04,650 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:19:04,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:19:04,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1593865285, now seen corresponding path program 1 times [2021-11-25 18:19:04,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:19:04,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577166634] [2021-11-25 18:19:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:19:04,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:19:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:19:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1693 trivial. 0 not checked. [2021-11-25 18:19:05,862 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:19:05,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577166634] [2021-11-25 18:19:05,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577166634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:19:05,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:19:05,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:19:05,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089273657] [2021-11-25 18:19:05,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:19:05,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:19:05,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:19:05,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:19:05,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:19:05,865 INFO L87 Difference]: Start difference. First operand 86076 states and 124689 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-25 18:19:14,392 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 18:19:17,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:19,769 WARN L534 Checker$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 18:19:21,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:24,569 WARN L534 Checker$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 18:19:26,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:31,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:35,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:38,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:40,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:43,618 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:46,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:48,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:49,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:19:49,291 INFO L93 Difference]: Finished difference Result 181892 states and 263400 transitions. [2021-11-25 18:19:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:19:49,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 396 [2021-11-25 18:19:49,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:19:49,971 INFO L225 Difference]: With dead ends: 181892 [2021-11-25 18:19:49,971 INFO L226 Difference]: Without dead ends: 97343 [2021-11-25 18:19:50,205 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 18:19:50,206 INFO L933 BasicCegarLoop]: 6396 mSDtfsCounter, 3223 mSDsluCounter, 4021 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 6 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3231 SdHoareTripleChecker+Valid, 9934 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:19:50,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3231 Valid, 9934 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1434 Invalid, 13 Unknown, 0 Unchecked, 40.6s Time] [2021-11-25 18:19:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97343 states. [2021-11-25 18:19:53,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97343 to 97294. [2021-11-25 18:19:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97294 states, 61878 states have (on average 1.3308768867772067) internal successors, (82352), 62409 states have internal predecessors, (82352), 29166 states have call successors, (29166), 6264 states have call predecessors, (29166), 6249 states have return successors, (29295), 28998 states have call predecessors, (29295), 29163 states have call successors, (29295) [2021-11-25 18:19:54,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97294 states to 97294 states and 140813 transitions. [2021-11-25 18:19:54,427 INFO L78 Accepts]: Start accepts. Automaton has 97294 states and 140813 transitions. Word has length 396 [2021-11-25 18:19:54,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:19:54,428 INFO L470 AbstractCegarLoop]: Abstraction has 97294 states and 140813 transitions. [2021-11-25 18:19:54,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-25 18:19:54,429 INFO L276 IsEmpty]: Start isEmpty. Operand 97294 states and 140813 transitions. [2021-11-25 18:19:54,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-11-25 18:19:54,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:19:54,585 INFO L514 BasicCegarLoop]: trace histogram [28, 16, 16, 16, 16, 16, 16, 10, 10, 9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:19:54,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:19:54,586 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:19:54,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:19:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash 706089449, now seen corresponding path program 1 times [2021-11-25 18:19:54,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:19:54,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930386960] [2021-11-25 18:19:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:19:54,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:19:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:19:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 1853 trivial. 0 not checked. [2021-11-25 18:19:55,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:19:55,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930386960] [2021-11-25 18:19:55,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930386960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:19:55,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:19:55,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:19:55,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570206754] [2021-11-25 18:19:55,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:19:55,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:19:55,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:19:55,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:19:55,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:19:55,832 INFO L87 Difference]: Start difference. First operand 97294 states and 140813 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-25 18:20:03,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:04,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:08,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:11,706 WARN L534 Checker$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 18:20:13,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:15,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:17,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:19,659 WARN L534 Checker$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 18:20:24,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:28,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:30,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:33,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:36,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:38,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:41,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:42,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:20:42,102 INFO L93 Difference]: Finished difference Result 200726 states and 290507 transitions. [2021-11-25 18:20:42,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:20:42,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 414 [2021-11-25 18:20:42,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:20:43,096 INFO L225 Difference]: With dead ends: 200726 [2021-11-25 18:20:43,096 INFO L226 Difference]: Without dead ends: 104977 [2021-11-25 18:20:43,391 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 18:20:43,392 INFO L933 BasicCegarLoop]: 6440 mSDtfsCounter, 3306 mSDsluCounter, 4023 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 5 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3309 SdHoareTripleChecker+Valid, 9978 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:20:43,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3309 Valid, 9978 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1451 Invalid, 12 Unknown, 0 Unchecked, 43.0s Time] [2021-11-25 18:20:43,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104977 states. [2021-11-25 18:20:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104977 to 104976. [2021-11-25 18:20:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104976 states, 66760 states have (on average 1.330587177950869) internal successors, (88830), 67327 states have internal predecessors, (88830), 31470 states have call successors, (31470), 6760 states have call predecessors, (31470), 6745 states have return successors, (31607), 31296 states have call predecessors, (31607), 31467 states have call successors, (31607) [2021-11-25 18:20:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104976 states to 104976 states and 151907 transitions. [2021-11-25 18:20:48,393 INFO L78 Accepts]: Start accepts. Automaton has 104976 states and 151907 transitions. Word has length 414 [2021-11-25 18:20:48,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:20:48,394 INFO L470 AbstractCegarLoop]: Abstraction has 104976 states and 151907 transitions. [2021-11-25 18:20:48,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-25 18:20:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 104976 states and 151907 transitions. [2021-11-25 18:20:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-11-25 18:20:48,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:20:48,637 INFO L514 BasicCegarLoop]: trace histogram [24, 18, 18, 18, 18, 18, 18, 11, 8, 8, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:20:48,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:20:48,638 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:20:48,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:20:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash 355080365, now seen corresponding path program 1 times [2021-11-25 18:20:48,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:20:48,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284410146] [2021-11-25 18:20:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:48,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:20:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:20:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1762 trivial. 0 not checked. [2021-11-25 18:20:50,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:20:50,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284410146] [2021-11-25 18:20:50,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284410146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:20:50,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:20:50,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:20:50,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675994597] [2021-11-25 18:20:50,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:20:50,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:20:50,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:20:50,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:20:50,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:20:50,984 INFO L87 Difference]: Start difference. First operand 104976 states and 151907 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2021-11-25 18:20:55,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:57,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:59,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:03,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:05,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:09,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:11,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:13,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:15,654 WARN L534 Checker$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 18:21:20,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:24,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:26,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:29,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:31,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:34,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:36,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:38,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:38,615 INFO L93 Difference]: Finished difference Result 248926 states and 360456 transitions. [2021-11-25 18:21:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:21:38,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 452 [2021-11-25 18:21:38,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:39,654 INFO L225 Difference]: With dead ends: 248926 [2021-11-25 18:21:39,654 INFO L226 Difference]: Without dead ends: 145495 [2021-11-25 18:21:39,981 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 18:21:39,981 INFO L933 BasicCegarLoop]: 5480 mSDtfsCounter, 2276 mSDsluCounter, 4008 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 15 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 9008 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:39,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2278 Valid, 9008 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1341 Invalid, 11 Unknown, 0 Unchecked, 42.9s Time] [2021-11-25 18:21:40,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145495 states. [2021-11-25 18:21:45,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145495 to 145485. [2021-11-25 18:21:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145485 states, 93117 states have (on average 1.3328285919864258) internal successors, (124109), 93787 states have internal predecessors, (124109), 43038 states have call successors, (43038), 9370 states have call predecessors, (43038), 9329 states have return successors, (43218), 42816 states have call predecessors, (43218), 43035 states have call successors, (43218) [2021-11-25 18:21:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145485 states to 145485 states and 210365 transitions. [2021-11-25 18:21:46,918 INFO L78 Accepts]: Start accepts. Automaton has 145485 states and 210365 transitions. Word has length 452 [2021-11-25 18:21:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:46,919 INFO L470 AbstractCegarLoop]: Abstraction has 145485 states and 210365 transitions. [2021-11-25 18:21:46,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2021-11-25 18:21:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 145485 states and 210365 transitions. [2021-11-25 18:21:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2021-11-25 18:21:47,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:47,185 INFO L514 BasicCegarLoop]: trace histogram [29, 16, 16, 16, 16, 16, 16, 11, 11, 10, 10, 10, 8, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:47,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:21:47,186 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:47,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash 944588696, now seen corresponding path program 1 times [2021-11-25 18:21:47,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:47,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244067520] [2021-11-25 18:21:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:47,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2038 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2021-11-25 18:21:48,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:48,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244067520] [2021-11-25 18:21:48,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244067520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:48,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:48,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:48,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283783099] [2021-11-25 18:21:48,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:48,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:21:48,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:48,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:21:48,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:48,128 INFO L87 Difference]: Start difference. First operand 145485 states and 210365 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-25 18:21:55,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:58,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:00,944 WARN L534 Checker$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 18:22:06,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:08,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:10,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:13,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:18,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:22,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:25,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:28,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:30,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:33,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:35,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:38,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:38,660 INFO L93 Difference]: Finished difference Result 305524 states and 441783 transitions. [2021-11-25 18:22:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:38,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 429 [2021-11-25 18:22:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:39,483 INFO L225 Difference]: With dead ends: 305524 [2021-11-25 18:22:39,483 INFO L226 Difference]: Without dead ends: 161584 [2021-11-25 18:22:40,142 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 18:22:40,142 INFO L933 BasicCegarLoop]: 6480 mSDtfsCounter, 3352 mSDsluCounter, 4023 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 4 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3355 SdHoareTripleChecker+Valid, 10018 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:40,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3355 Valid, 10018 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1456 Invalid, 12 Unknown, 0 Unchecked, 45.0s Time] [2021-11-25 18:22:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161584 states. [2021-11-25 18:22:48,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161584 to 161583. [2021-11-25 18:22:49,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161583 states, 103415 states have (on average 1.3326500024174444) internal successors, (137816), 104145 states have internal predecessors, (137816), 47803 states have call successors, (47803), 10408 states have call predecessors, (47803), 10364 states have return successors, (47998), 47572 states have call predecessors, (47998), 47800 states have call successors, (47998) [2021-11-25 18:22:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161583 states to 161583 states and 233617 transitions. [2021-11-25 18:22:50,479 INFO L78 Accepts]: Start accepts. Automaton has 161583 states and 233617 transitions. Word has length 429 [2021-11-25 18:22:50,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:50,479 INFO L470 AbstractCegarLoop]: Abstraction has 161583 states and 233617 transitions. [2021-11-25 18:22:50,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-25 18:22:50,480 INFO L276 IsEmpty]: Start isEmpty. Operand 161583 states and 233617 transitions. [2021-11-25 18:22:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2021-11-25 18:22:50,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:50,716 INFO L514 BasicCegarLoop]: trace histogram [30, 16, 16, 16, 16, 16, 16, 12, 12, 11, 11, 11, 9, 8, 8, 8, 8, 7, 6, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:50,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:22:50,717 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:50,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:50,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1482176040, now seen corresponding path program 1 times [2021-11-25 18:22:50,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:50,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359587864] [2021-11-25 18:22:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:50,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2195 backedges. 102 proven. 132 refuted. 0 times theorem prover too weak. 1961 trivial. 0 not checked. [2021-11-25 18:22:52,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:52,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359587864] [2021-11-25 18:22:52,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359587864] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:22:52,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796763354] [2021-11-25 18:22:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:52,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:52,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:52,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:52,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e4c565-9431-47dc-8ef0-3aa8c48780fe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process