./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--crypto--qat--qat_common--intel_qat.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--crypto--qat--qat_common--intel_qat.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V --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 cc81a0fdf5a8fc47bd520d0ffd4783aee7bab8a9ab782dc4fa625b3bc33bce33 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:18:34,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:18:34,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:18:35,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:18:35,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:18:35,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:18:35,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:18:35,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:18:35,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:18:35,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:18:35,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:18:35,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:18:35,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:18:35,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:18:35,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:18:35,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:18:35,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:18:35,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:18:35,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:18:35,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:18:35,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:18:35,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:18:35,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:18:35,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:18:35,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:18:35,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:18:35,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:18:35,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:18:35,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:18:35,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:18:35,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:18:35,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:18:35,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:18:35,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:18:35,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:18:35,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:18:35,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:18:35,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:18:35,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:18:35,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:18:35,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:18:35,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:18:35,140 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:18:35,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:18:35,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:18:35,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:18:35,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:18:35,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:18:35,142 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:18:35,142 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:18:35,142 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:18:35,143 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:18:35,143 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:18:35,143 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:18:35,143 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:18:35,143 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:18:35,144 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:18:35,144 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:18:35,144 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:18:35,144 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:18:35,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:18:35,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:18:35,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:18:35,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:18:35,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:18:35,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:18:35,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:18:35,147 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:18:35,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:18:35,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:18:35,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:18:35,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:18:35,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:18:35,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:18:35,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:18:35,153 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:18:35,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:18:35,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:18:35,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:18:35,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:18:35,154 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_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc81a0fdf5a8fc47bd520d0ffd4783aee7bab8a9ab782dc4fa625b3bc33bce33 [2021-11-23 03:18:35,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:18:35,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:18:35,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:18:35,436 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:18:35,437 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:18:35,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--crypto--qat--qat_common--intel_qat.ko-entry_point.cil.out.i [2021-11-23 03:18:35,512 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/data/fdbe061f4/98d8a9b145844639aa5fad5e0e6e7041/FLAGcc53497fe [2021-11-23 03:18:36,468 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:18:36,469 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--crypto--qat--qat_common--intel_qat.ko-entry_point.cil.out.i [2021-11-23 03:18:36,525 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/data/fdbe061f4/98d8a9b145844639aa5fad5e0e6e7041/FLAGcc53497fe [2021-11-23 03:18:36,844 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/data/fdbe061f4/98d8a9b145844639aa5fad5e0e6e7041 [2021-11-23 03:18:36,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:18:36,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:18:36,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:18:36,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:18:36,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:18:36,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:18:36" (1/1) ... [2021-11-23 03:18:36,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614aebd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:36, skipping insertion in model container [2021-11-23 03:18:36,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:18:36" (1/1) ... [2021-11-23 03:18:36,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:18:37,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:18:42,337 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_7a287952-c6f9-4aa1-a627-a9190fe45458/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--crypto--qat--qat_common--intel_qat.ko-entry_point.cil.out.i[494254,494267] [2021-11-23 03:18:42,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:18:42,550 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:18:43,338 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_7a287952-c6f9-4aa1-a627-a9190fe45458/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--crypto--qat--qat_common--intel_qat.ko-entry_point.cil.out.i[494254,494267] [2021-11-23 03:18:43,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:18:43,669 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:18:43,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:43 WrapperNode [2021-11-23 03:18:43,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:18:43,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:18:43,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:18:43,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:18:43,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:43" (1/1) ... [2021-11-23 03:18:43,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:43" (1/1) ... [2021-11-23 03:18:44,403 INFO L137 Inliner]: procedures = 589, calls = 5722, calls flagged for inlining = 265, calls inlined = 231, statements flattened = 11434 [2021-11-23 03:18:44,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:18:44,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:18:44,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:18:44,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:18:44,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:43" (1/1) ... [2021-11-23 03:18:44,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:43" (1/1) ... [2021-11-23 03:18:44,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:43" (1/1) ... [2021-11-23 03:18:44,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:43" (1/1) ... [2021-11-23 03:18:44,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:43" (1/1) ... [2021-11-23 03:18:44,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:43" (1/1) ... [2021-11-23 03:18:45,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:43" (1/1) ... [2021-11-23 03:18:45,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:18:45,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:18:45,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:18:45,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:18:45,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:43" (1/1) ... [2021-11-23 03:18:45,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:18:45,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:18:45,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:18:45,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:18:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 03:18:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 03:18:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_wr_ae_csr [2021-11-23 03:18:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_wr_ae_csr [2021-11-23 03:18:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-23 03:18:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure seq_puts [2021-11-23 03:18:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_puts [2021-11-23 03:18:45,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:18:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:18:45,161 INFO L130 BoogieDeclarations]: Found specification of procedure adf_error_detected [2021-11-23 03:18:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_error_detected [2021-11-23 03:18:45,161 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-23 03:18:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-23 03:18:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure adf_cfg_section_add [2021-11-23 03:18:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_cfg_section_add [2021-11-23 03:18:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:18:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:18:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure crypto_shash_tfm [2021-11-23 03:18:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure crypto_shash_tfm [2021-11-23 03:18:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-11-23 03:18:45,163 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-11-23 03:18:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 03:18:45,163 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 03:18:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 03:18:45,163 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 03:18:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_disable_ctx [2021-11-23 03:18:45,164 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_disable_ctx [2021-11-23 03:18:45,164 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_get_reg_addr [2021-11-23 03:18:45,164 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_get_reg_addr [2021-11-23 03:18:45,164 INFO L130 BoogieDeclarations]: Found specification of procedure __crypto_aead_cast [2021-11-23 03:18:45,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __crypto_aead_cast [2021-11-23 03:18:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-23 03:18:45,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-23 03:18:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:18:45,166 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:18:45,166 INFO L130 BoogieDeclarations]: Found specification of procedure crypto_aead_tfm [2021-11-23 03:18:45,166 INFO L138 BoogieDeclarations]: Found implementation of procedure crypto_aead_tfm [2021-11-23 03:18:45,166 INFO L130 BoogieDeclarations]: Found specification of procedure crypto_tfm_ctx [2021-11-23 03:18:45,167 INFO L138 BoogieDeclarations]: Found implementation of procedure crypto_tfm_ctx [2021-11-23 03:18:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_put_wakeup_event [2021-11-23 03:18:45,167 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_put_wakeup_event [2021-11-23 03:18:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure qat_crypto_shutdown [2021-11-23 03:18:45,167 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_crypto_shutdown [2021-11-23 03:18:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_rd_rel_reg [2021-11-23 03:18:45,168 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_rd_rel_reg [2021-11-23 03:18:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 03:18:45,168 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 03:18:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 03:18:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_rd_ae_csr [2021-11-23 03:18:45,169 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_rd_ae_csr [2021-11-23 03:18:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:18:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:18:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure adf_devmgr_pci_to_accel_dev [2021-11-23 03:18:45,171 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_devmgr_pci_to_accel_dev [2021-11-23 03:18:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure adf_cleanup_etr_data [2021-11-23 03:18:45,171 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_cleanup_etr_data [2021-11-23 03:18:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_clr_reset [2021-11-23 03:18:45,171 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_clr_reset [2021-11-23 03:18:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:18:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_set_uword_ecc [2021-11-23 03:18:45,172 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_set_uword_ecc [2021-11-23 03:18:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-23 03:18:45,172 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-23 03:18:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-23 03:18:45,173 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-23 03:18:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-23 03:18:45,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-23 03:18:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 03:18:45,173 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 03:18:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-11-23 03:18:45,174 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-11-23 03:18:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_wr_uwords [2021-11-23 03:18:45,174 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_wr_uwords [2021-11-23 03:18:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 03:18:45,174 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 03:18:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure adf_devmgr_get_head [2021-11-23 03:18:45,175 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_devmgr_get_head [2021-11-23 03:18:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-23 03:18:45,175 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-23 03:18:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure adf_cfg_del_all [2021-11-23 03:18:45,176 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_cfg_del_all [2021-11-23 03:18:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure aead_request_ctx [2021-11-23 03:18:45,176 INFO L138 BoogieDeclarations]: Found implementation of procedure aead_request_ctx [2021-11-23 03:18:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:18:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure adf_dev_init [2021-11-23 03:18:45,177 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_dev_init [2021-11-23 03:18:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 03:18:45,177 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 03:18:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 03:18:45,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 03:18:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-23 03:18:45,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-23 03:18:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:18:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure adf_service_unregister [2021-11-23 03:18:45,180 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_service_unregister [2021-11-23 03:18:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure seq_open [2021-11-23 03:18:45,180 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_open [2021-11-23 03:18:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:18:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 03:18:45,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 03:18:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure crypto_ablkcipher_reqtfm [2021-11-23 03:18:45,181 INFO L138 BoogieDeclarations]: Found implementation of procedure crypto_ablkcipher_reqtfm [2021-11-23 03:18:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:18:45,181 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:18:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure adf_bank_open [2021-11-23 03:18:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_bank_open [2021-11-23 03:18:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure qat_crypto_free_instances [2021-11-23 03:18:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_crypto_free_instances [2021-11-23 03:18:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure qat_alg_free_bufl [2021-11-23 03:18:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_alg_free_bufl [2021-11-23 03:18:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2021-11-23 03:18:45,184 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2021-11-23 03:18:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 03:18:45,186 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 03:18:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-23 03:18:45,186 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-23 03:18:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc_node [2021-11-23 03:18:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc_node [2021-11-23 03:18:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2021-11-23 03:18:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2021-11-23 03:18:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure qat_alg_aead_init [2021-11-23 03:18:45,196 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_alg_aead_init [2021-11-23 03:18:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure qat_uclo_find_chunk [2021-11-23 03:18:45,196 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_uclo_find_chunk [2021-11-23 03:18:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 03:18:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 03:18:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:18:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure qat_uclo_init_reg [2021-11-23 03:18:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_uclo_init_reg [2021-11-23 03:18:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure adf_ring_stop [2021-11-23 03:18:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_ring_stop [2021-11-23 03:18:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-23 03:18:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-23 03:18:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2021-11-23 03:18:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2021-11-23 03:18:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-23 03:18:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-23 03:18:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_exec_micro_inst [2021-11-23 03:18:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_exec_micro_inst [2021-11-23 03:18:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:18:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure adf_exit_aer [2021-11-23 03:18:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_exit_aer [2021-11-23 03:18:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_get_uwords [2021-11-23 03:18:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_get_uwords [2021-11-23 03:18:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure adf_create_ring [2021-11-23 03:18:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_create_ring [2021-11-23 03:18:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:18:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure adf_cleanup_ring [2021-11-23 03:18:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_cleanup_ring [2021-11-23 03:18:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure adf_modulo [2021-11-23 03:18:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_modulo [2021-11-23 03:18:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:18:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:18:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure qat_uclo_create_batch_init_list [2021-11-23 03:18:45,201 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_uclo_create_batch_init_list [2021-11-23 03:18:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:18:45,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:18:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_convert_abs_to_rel [2021-11-23 03:18:45,201 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_convert_abs_to_rel [2021-11-23 03:18:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure adf_send_message [2021-11-23 03:18:45,202 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_send_message [2021-11-23 03:18:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_init_rd_xfer [2021-11-23 03:18:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_init_rd_xfer [2021-11-23 03:18:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure adf_chr_drv_destroy [2021-11-23 03:18:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_chr_drv_destroy [2021-11-23 03:18:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2021-11-23 03:18:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2021-11-23 03:18:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_put_sig_event [2021-11-23 03:18:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_put_sig_event [2021-11-23 03:18:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:18:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:18:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure adf_dev_stop [2021-11-23 03:18:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_dev_stop [2021-11-23 03:18:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure qat_crypto_event_handler [2021-11-23 03:18:45,205 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_crypto_event_handler [2021-11-23 03:18:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:18:45,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:18:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-23 03:18:45,205 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-23 03:18:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 03:18:45,205 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 03:18:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_parity_64bit [2021-11-23 03:18:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_parity_64bit [2021-11-23 03:18:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 03:18:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 03:18:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2021-11-23 03:18:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2021-11-23 03:18:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:18:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:18:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:18:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:18:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure qat_crypto_init [2021-11-23 03:18:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_crypto_init [2021-11-23 03:18:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure adf_cfg_add_key_value_param [2021-11-23 03:18:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_cfg_add_key_value_param [2021-11-23 03:18:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_wr_indr_csr [2021-11-23 03:18:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_wr_indr_csr [2021-11-23 03:18:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub_return [2021-11-23 03:18:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub_return [2021-11-23 03:18:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure qat_crypto_put_instance [2021-11-23 03:18:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_crypto_put_instance [2021-11-23 03:18:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-11-23 03:18:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-11-23 03:18:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-23 03:18:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-23 03:18:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_put_rel_wr_xfer [2021-11-23 03:18:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_put_rel_wr_xfer [2021-11-23 03:18:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure adf_unreserve_ring [2021-11-23 03:18:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_unreserve_ring [2021-11-23 03:18:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 03:18:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 03:18:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2021-11-23 03:18:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2021-11-23 03:18:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 03:18:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 03:18:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_6 [2021-11-23 03:18:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_6 [2021-11-23 03:18:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure adf_ctl_ioctl [2021-11-23 03:18:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_ctl_ioctl [2021-11-23 03:18:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure adf_cfg_section_del_all [2021-11-23 03:18:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_cfg_section_del_all [2021-11-23 03:18:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure qat_dev_cfg_show [2021-11-23 03:18:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_dev_cfg_show [2021-11-23 03:18:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure qat_uclo_fetch_initmem_ae [2021-11-23 03:18:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_uclo_fetch_initmem_ae [2021-11-23 03:18:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_enable_ctx [2021-11-23 03:18:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_enable_ctx [2021-11-23 03:18:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 03:18:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 03:18:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:18:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:18:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure adf_bank_show [2021-11-23 03:18:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_bank_show [2021-11-23 03:18:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-23 03:18:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-23 03:18:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:18:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:18:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure adf_cfg_sec_find [2021-11-23 03:18:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_cfg_sec_find [2021-11-23 03:18:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure adf_ring_show [2021-11-23 03:18:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_ring_show [2021-11-23 03:18:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_deinit [2021-11-23 03:18:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_deinit [2021-11-23 03:18:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-23 03:18:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-23 03:18:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_node [2021-11-23 03:18:45,220 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_node [2021-11-23 03:18:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure adf_ctl_alloc_resources [2021-11-23 03:18:45,221 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_ctl_alloc_resources [2021-11-23 03:18:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 03:18:45,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 03:18:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:18:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:18:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:18:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:18:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure adf_devmgr_get_dev_by_id [2021-11-23 03:18:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_devmgr_get_dev_by_id [2021-11-23 03:18:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-23 03:18:45,223 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-23 03:18:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_set_ae_lm_mode [2021-11-23 03:18:45,223 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_set_ae_lm_mode [2021-11-23 03:18:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure qat_dev_cfg_open [2021-11-23 03:18:45,223 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_dev_cfg_open [2021-11-23 03:18:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure adf_ae_fw_release [2021-11-23 03:18:45,223 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_ae_fw_release [2021-11-23 03:18:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2021-11-23 03:18:45,224 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2021-11-23 03:18:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure ablkcipher_request_ctx [2021-11-23 03:18:45,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ablkcipher_request_ctx [2021-11-23 03:18:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:18:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_seq_operations_3 [2021-11-23 03:18:45,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_seq_operations_3 [2021-11-23 03:18:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure adf_init_etr_data [2021-11-23 03:18:45,225 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_init_etr_data [2021-11-23 03:18:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2021-11-23 03:18:45,225 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2021-11-23 03:18:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 03:18:45,225 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 03:18:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-23 03:18:45,225 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-23 03:18:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-23 03:18:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-23 03:18:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure adf_dev_restarted_notify [2021-11-23 03:18:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_dev_restarted_notify [2021-11-23 03:18:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 03:18:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 03:18:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure adf_dev_shutdown [2021-11-23 03:18:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_dev_shutdown [2021-11-23 03:18:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure adf_ring_open [2021-11-23 03:18:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_ring_open [2021-11-23 03:18:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure adf_remove_ring [2021-11-23 03:18:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_remove_ring [2021-11-23 03:18:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-23 03:18:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-23 03:18:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-23 03:18:45,228 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-23 03:18:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure crypto_aead_reqtfm [2021-11-23 03:18:45,228 INFO L138 BoogieDeclarations]: Found implementation of procedure crypto_aead_reqtfm [2021-11-23 03:18:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure qat_alg_sgl_to_bufl [2021-11-23 03:18:45,228 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_alg_sgl_to_bufl [2021-11-23 03:18:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure qat_crypto_create_instances [2021-11-23 03:18:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_crypto_create_instances [2021-11-23 03:18:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:18:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:18:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:18:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:18:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure adf_cfg_get_param_value [2021-11-23 03:18:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_cfg_get_param_value [2021-11-23 03:18:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2021-11-23 03:18:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2021-11-23 03:18:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure adf_resume [2021-11-23 03:18:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_resume [2021-11-23 03:18:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2021-11-23 03:18:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2021-11-23 03:18:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:18:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release [2021-11-23 03:18:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release [2021-11-23 03:18:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_rd_indr_csr [2021-11-23 03:18:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_rd_indr_csr [2021-11-23 03:18:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:18:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:18:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure qat_dev_cfg_stop [2021-11-23 03:18:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_dev_cfg_stop [2021-11-23 03:18:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~uint32_t~0 [2021-11-23 03:18:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~uint32_t~0 [2021-11-23 03:18:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure adf_get_cfg_int [2021-11-23 03:18:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_get_cfg_int [2021-11-23 03:18:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure adf_bank_stop [2021-11-23 03:18:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_bank_stop [2021-11-23 03:18:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure adf_device_reset_worker [2021-11-23 03:18:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_device_reset_worker [2021-11-23 03:18:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 03:18:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 03:18:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-23 03:18:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-23 03:18:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure adf_dev_restarting_notify [2021-11-23 03:18:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_dev_restarting_notify [2021-11-23 03:18:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure adf_dev_started [2021-11-23 03:18:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_dev_started [2021-11-23 03:18:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure sg_nents [2021-11-23 03:18:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_nents [2021-11-23 03:18:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure qat_alg_aead_enc_internal [2021-11-23 03:18:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_alg_aead_enc_internal [2021-11-23 03:18:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-23 03:18:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-23 03:18:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 03:18:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 03:18:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure adf_slot_reset [2021-11-23 03:18:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_slot_reset [2021-11-23 03:18:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure qat_uclo_cleanup_batch_init_list [2021-11-23 03:18:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_uclo_cleanup_batch_init_list [2021-11-23 03:18:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2021-11-23 03:18:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2021-11-23 03:18:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_wait_cycles [2021-11-23 03:18:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_wait_cycles [2021-11-23 03:18:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2021-11-23 03:18:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2021-11-23 03:18:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-23 03:18:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-23 03:18:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-11-23 03:18:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-11-23 03:18:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2021-11-23 03:18:45,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2021-11-23 03:18:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure qat_algs_exit [2021-11-23 03:18:45,237 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_algs_exit [2021-11-23 03:18:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure crypto_aead_crt [2021-11-23 03:18:45,237 INFO L138 BoogieDeclarations]: Found implementation of procedure crypto_aead_crt [2021-11-23 03:18:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 03:18:45,237 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 03:18:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure adf_service_register [2021-11-23 03:18:45,238 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_service_register [2021-11-23 03:18:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-23 03:18:45,238 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-23 03:18:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure adf_dev_start [2021-11-23 03:18:45,238 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_dev_start [2021-11-23 03:18:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure sg_virt [2021-11-23 03:18:45,239 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_virt [2021-11-23 03:18:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure crypto_ablkcipher_tfm [2021-11-23 03:18:45,240 INFO L138 BoogieDeclarations]: Found implementation of procedure crypto_ablkcipher_tfm [2021-11-23 03:18:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure adf_verify_ring_size [2021-11-23 03:18:45,240 INFO L138 BoogieDeclarations]: Found implementation of procedure adf_verify_ring_size [2021-11-23 03:18:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:18:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure qat_hal_wr_rel_reg [2021-11-23 03:18:45,240 INFO L138 BoogieDeclarations]: Found implementation of procedure qat_hal_wr_rel_reg [2021-11-23 03:18:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 03:18:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtouint [2021-11-23 03:18:45,241 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtouint [2021-11-23 03:18:46,752 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:18:46,756 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:18:46,864 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:27:38,190 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:27:43,143 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:27:43,143 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:27:43,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:27:43 BoogieIcfgContainer [2021-11-23 03:27:43,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:27:43,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:27:43,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:27:43,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:27:43,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:18:36" (1/3) ... [2021-11-23 03:27:43,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6650cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:27:43, skipping insertion in model container [2021-11-23 03:27:43,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:43" (2/3) ... [2021-11-23 03:27:43,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6650cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:27:43, skipping insertion in model container [2021-11-23 03:27:43,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:27:43" (3/3) ... [2021-11-23 03:27:43,162 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--crypto--qat--qat_common--intel_qat.ko-entry_point.cil.out.i [2021-11-23 03:27:43,168 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:27:43,168 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:27:43,250 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:27:43,262 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 [2021-11-23 03:27:43,262 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:27:43,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 3043 states, 1952 states have (on average 1.3452868852459017) internal successors, (2626), 2008 states have internal predecessors, (2626), 906 states have call successors, (906), 184 states have call predecessors, (906), 183 states have return successors, (896), 891 states have call predecessors, (896), 896 states have call successors, (896) [2021-11-23 03:27:43,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 03:27:43,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:27:43,360 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:27:43,360 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:27:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:27:43,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1268078487, now seen corresponding path program 1 times [2021-11-23 03:27:43,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:27:43,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821567368] [2021-11-23 03:27:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:27:43,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:27:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:27:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-23 03:27:44,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:27:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821567368] [2021-11-23 03:27:44,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821567368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:27:44,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:27:44,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:27:44,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445013580] [2021-11-23 03:27:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:27:44,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:27:44,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:27:44,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:27:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:27:44,760 INFO L87 Difference]: Start difference. First operand has 3043 states, 1952 states have (on average 1.3452868852459017) internal successors, (2626), 2008 states have internal predecessors, (2626), 906 states have call successors, (906), 184 states have call predecessors, (906), 183 states have return successors, (896), 891 states have call predecessors, (896), 896 states have call successors, (896) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 03:27:46,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:27:52,620 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 [] [2021-11-23 03:27:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:27:53,388 INFO L93 Difference]: Finished difference Result 6326 states and 9335 transitions. [2021-11-23 03:27:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:27:53,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-11-23 03:27:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:27:53,454 INFO L225 Difference]: With dead ends: 6326 [2021-11-23 03:27:53,454 INFO L226 Difference]: Without dead ends: 3263 [2021-11-23 03:27:53,491 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 [2021-11-23 03:27:53,495 INFO L933 BasicCegarLoop]: 4352 mSDtfsCounter, 318 mSDsluCounter, 4422 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 8411 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:27:53,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 8411 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 755 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-23 03:27:53,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2021-11-23 03:27:53,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 3025. [2021-11-23 03:27:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3025 states, 1946 states have (on average 1.3371017471736897) internal successors, (2602), 1989 states have internal predecessors, (2602), 896 states have call successors, (896), 183 states have call predecessors, (896), 182 states have return successors, (894), 889 states have call predecessors, (894), 894 states have call successors, (894) [2021-11-23 03:27:53,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3025 states to 3025 states and 4392 transitions. [2021-11-23 03:27:53,768 INFO L78 Accepts]: Start accepts. Automaton has 3025 states and 4392 transitions. Word has length 66 [2021-11-23 03:27:53,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:27:53,769 INFO L470 AbstractCegarLoop]: Abstraction has 3025 states and 4392 transitions. [2021-11-23 03:27:53,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 03:27:53,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3025 states and 4392 transitions. [2021-11-23 03:27:53,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 03:27:53,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:27:53,777 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:27:53,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:27:53,778 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:27:53,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:27:53,779 INFO L85 PathProgramCache]: Analyzing trace with hash 341188082, now seen corresponding path program 1 times [2021-11-23 03:27:53,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:27:53,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104941050] [2021-11-23 03:27:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:27:53,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:27:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:27:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-23 03:27:54,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:27:54,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104941050] [2021-11-23 03:27:54,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104941050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:27:54,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:27:54,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:27:54,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197421003] [2021-11-23 03:27:54,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:27:54,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:27:54,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:27:54,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:27:54,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:27:54,503 INFO L87 Difference]: Start difference. First operand 3025 states and 4392 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:27:56,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:28:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:28:00,543 INFO L93 Difference]: Finished difference Result 6039 states and 8844 transitions. [2021-11-23 03:28:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:28:00,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2021-11-23 03:28:00,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:28:00,580 INFO L225 Difference]: With dead ends: 6039 [2021-11-23 03:28:00,580 INFO L226 Difference]: Without dead ends: 3015 [2021-11-23 03:28:00,613 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 [2021-11-23 03:28:00,614 INFO L933 BasicCegarLoop]: 4013 mSDtfsCounter, 4353 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 4013 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:28:00,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4353 Valid, 4013 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 374 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-23 03:28:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2021-11-23 03:28:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 3015. [2021-11-23 03:28:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 1940 states have (on average 1.3371134020618556) internal successors, (2594), 1983 states have internal predecessors, (2594), 892 states have call successors, (892), 183 states have call predecessors, (892), 182 states have return successors, (890), 885 states have call predecessors, (890), 890 states have call successors, (890) [2021-11-23 03:28:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 4376 transitions. [2021-11-23 03:28:00,798 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 4376 transitions. Word has length 72 [2021-11-23 03:28:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:28:00,801 INFO L470 AbstractCegarLoop]: Abstraction has 3015 states and 4376 transitions. [2021-11-23 03:28:00,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:28:00,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 4376 transitions. [2021-11-23 03:28:00,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 03:28:00,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:28:00,812 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-23 03:28:00,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:28:00,813 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:28:00,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:28:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1419118766, now seen corresponding path program 1 times [2021-11-23 03:28:00,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:28:00,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475057238] [2021-11-23 03:28:00,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:00,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:28:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-23 03:28:01,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:28:01,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475057238] [2021-11-23 03:28:01,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475057238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:28:01,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:28:01,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:28:01,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113884473] [2021-11-23 03:28:01,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:28:01,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:28:01,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:28:01,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:28:01,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:28:01,525 INFO L87 Difference]: Start difference. First operand 3015 states and 4376 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:28:03,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:28:12,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:28:13,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:28:13,597 INFO L93 Difference]: Finished difference Result 8978 states and 13030 transitions. [2021-11-23 03:28:13,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:28:13,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2021-11-23 03:28:13,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:28:13,658 INFO L225 Difference]: With dead ends: 8978 [2021-11-23 03:28:13,659 INFO L226 Difference]: Without dead ends: 5967 [2021-11-23 03:28:13,684 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 [2021-11-23 03:28:13,693 INFO L933 BasicCegarLoop]: 7277 mSDtfsCounter, 4341 mSDsluCounter, 4302 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4341 SdHoareTripleChecker+Valid, 11220 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:28:13,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4341 Valid, 11220 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1014 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2021-11-23 03:28:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5967 states. [2021-11-23 03:28:14,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5967 to 5963. [2021-11-23 03:28:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5963 states, 3841 states have (on average 1.3371517833897422) internal successors, (5136), 3923 states have internal predecessors, (5136), 1761 states have call successors, (1761), 363 states have call predecessors, (1761), 360 states have return successors, (1757), 1747 states have call predecessors, (1757), 1757 states have call successors, (1757) [2021-11-23 03:28:14,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5963 states to 5963 states and 8654 transitions. [2021-11-23 03:28:14,071 INFO L78 Accepts]: Start accepts. Automaton has 5963 states and 8654 transitions. Word has length 121 [2021-11-23 03:28:14,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:28:14,072 INFO L470 AbstractCegarLoop]: Abstraction has 5963 states and 8654 transitions. [2021-11-23 03:28:14,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:28:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5963 states and 8654 transitions. [2021-11-23 03:28:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-23 03:28:14,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:28:14,088 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2021-11-23 03:28:14,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:28:14,089 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:28:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:28:14,090 INFO L85 PathProgramCache]: Analyzing trace with hash 838676263, now seen corresponding path program 1 times [2021-11-23 03:28:14,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:28:14,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126745879] [2021-11-23 03:28:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:14,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:28:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-23 03:28:14,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:28:14,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126745879] [2021-11-23 03:28:14,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126745879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:28:14,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:28:14,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:28:14,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657684611] [2021-11-23 03:28:14,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:28:14,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:28:14,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:28:14,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:28:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:28:14,734 INFO L87 Difference]: Start difference. First operand 5963 states and 8654 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 03:28:17,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:28:26,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:28:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:28:26,759 INFO L93 Difference]: Finished difference Result 12386 states and 18060 transitions. [2021-11-23 03:28:26,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:28:26,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2021-11-23 03:28:26,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:28:26,823 INFO L225 Difference]: With dead ends: 12386 [2021-11-23 03:28:26,823 INFO L226 Difference]: Without dead ends: 6432 [2021-11-23 03:28:26,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:28:26,862 INFO L933 BasicCegarLoop]: 4352 mSDtfsCounter, 549 mSDsluCounter, 8850 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 115 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 12459 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:28:26,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 12459 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1148 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2021-11-23 03:28:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2021-11-23 03:28:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 5965. [2021-11-23 03:28:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5965 states, 3843 states have (on average 1.336976320582878) internal successors, (5138), 3925 states have internal predecessors, (5138), 1761 states have call successors, (1761), 363 states have call predecessors, (1761), 360 states have return successors, (1757), 1747 states have call predecessors, (1757), 1757 states have call successors, (1757) [2021-11-23 03:28:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5965 states to 5965 states and 8656 transitions. [2021-11-23 03:28:27,217 INFO L78 Accepts]: Start accepts. Automaton has 5965 states and 8656 transitions. Word has length 138 [2021-11-23 03:28:27,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:28:27,220 INFO L470 AbstractCegarLoop]: Abstraction has 5965 states and 8656 transitions. [2021-11-23 03:28:27,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 03:28:27,221 INFO L276 IsEmpty]: Start isEmpty. Operand 5965 states and 8656 transitions. [2021-11-23 03:28:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 03:28:27,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:28:27,238 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:28:27,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:28:27,238 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:28:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:28:27,241 INFO L85 PathProgramCache]: Analyzing trace with hash -438698739, now seen corresponding path program 1 times [2021-11-23 03:28:27,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:28:27,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939761161] [2021-11-23 03:28:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:27,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:28:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-23 03:28:27,864 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:28:27,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939761161] [2021-11-23 03:28:27,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939761161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:28:27,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:28:27,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:28:27,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343281067] [2021-11-23 03:28:27,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:28:27,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:28:27,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:28:27,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:28:27,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:28:27,867 INFO L87 Difference]: Start difference. First operand 5965 states and 8656 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 03:28:30,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:28:35,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:28:35,541 INFO L93 Difference]: Finished difference Result 15056 states and 21802 transitions. [2021-11-23 03:28:35,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:28:35,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2021-11-23 03:28:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:28:35,614 INFO L225 Difference]: With dead ends: 15056 [2021-11-23 03:28:35,615 INFO L226 Difference]: Without dead ends: 9100 [2021-11-23 03:28:35,647 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 [2021-11-23 03:28:35,648 INFO L933 BasicCegarLoop]: 4822 mSDtfsCounter, 3988 mSDsluCounter, 4352 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3988 SdHoareTripleChecker+Valid, 8809 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:28:35,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3988 Valid, 8809 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 753 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-23 03:28:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9100 states. [2021-11-23 03:28:36,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9100 to 9090. [2021-11-23 03:28:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9090 states, 5867 states have (on average 1.3371399352309528) internal successors, (7845), 5985 states have internal predecessors, (7845), 2653 states have call successors, (2653), 572 states have call predecessors, (2653), 569 states have return successors, (2649), 2634 states have call predecessors, (2649), 2649 states have call successors, (2649) [2021-11-23 03:28:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9090 states to 9090 states and 13147 transitions. [2021-11-23 03:28:36,164 INFO L78 Accepts]: Start accepts. Automaton has 9090 states and 13147 transitions. Word has length 159 [2021-11-23 03:28:36,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:28:36,165 INFO L470 AbstractCegarLoop]: Abstraction has 9090 states and 13147 transitions. [2021-11-23 03:28:36,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 03:28:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 9090 states and 13147 transitions. [2021-11-23 03:28:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 03:28:36,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:28:36,176 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2021-11-23 03:28:36,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:28:36,176 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:28:36,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:28:36,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1290666627, now seen corresponding path program 1 times [2021-11-23 03:28:36,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:28:36,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149103307] [2021-11-23 03:28:36,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:36,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:28:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-23 03:28:36,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:28:36,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149103307] [2021-11-23 03:28:36,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149103307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:28:36,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:28:36,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:28:36,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077237466] [2021-11-23 03:28:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:28:36,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:28:36,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:28:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:28:36,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:28:36,737 INFO L87 Difference]: Start difference. First operand 9090 states and 13147 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 03:28:38,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:28:46,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:28:46,654 INFO L93 Difference]: Finished difference Result 18170 states and 26278 transitions. [2021-11-23 03:28:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:28:46,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2021-11-23 03:28:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:28:46,700 INFO L225 Difference]: With dead ends: 18170 [2021-11-23 03:28:46,701 INFO L226 Difference]: Without dead ends: 9029 [2021-11-23 03:28:46,745 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 [2021-11-23 03:28:46,746 INFO L933 BasicCegarLoop]: 4002 mSDtfsCounter, 1 mSDsluCounter, 8742 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12001 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:28:46,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 12001 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1123 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2021-11-23 03:28:46,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9029 states. [2021-11-23 03:28:47,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9029 to 9027. [2021-11-23 03:28:47,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9027 states, 5830 states have (on average 1.337392795883362) internal successors, (7797), 5947 states have internal predecessors, (7797), 2639 states have call successors, (2639), 562 states have call predecessors, (2639), 557 states have return successors, (2632), 2616 states have call predecessors, (2632), 2632 states have call successors, (2632) [2021-11-23 03:28:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9027 states to 9027 states and 13068 transitions. [2021-11-23 03:28:47,472 INFO L78 Accepts]: Start accepts. Automaton has 9027 states and 13068 transitions. Word has length 159 [2021-11-23 03:28:47,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:28:47,473 INFO L470 AbstractCegarLoop]: Abstraction has 9027 states and 13068 transitions. [2021-11-23 03:28:47,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 03:28:47,473 INFO L276 IsEmpty]: Start isEmpty. Operand 9027 states and 13068 transitions. [2021-11-23 03:28:47,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-23 03:28:47,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:28:47,487 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2021-11-23 03:28:47,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:28:47,488 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:28:47,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:28:47,488 INFO L85 PathProgramCache]: Analyzing trace with hash -43942489, now seen corresponding path program 1 times [2021-11-23 03:28:47,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:28:47,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292209501] [2021-11-23 03:28:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:47,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:28:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-23 03:28:48,354 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:28:48,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292209501] [2021-11-23 03:28:48,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292209501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:28:48,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:28:48,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:28:48,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586390066] [2021-11-23 03:28:48,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:28:48,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:28:48,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:28:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:28:48,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:28:48,357 INFO L87 Difference]: Start difference. First operand 9027 states and 13068 transitions. Second operand has 5 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:28:50,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:28:59,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:28:59,874 INFO L93 Difference]: Finished difference Result 11593 states and 16811 transitions. [2021-11-23 03:28:59,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:28:59,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 187 [2021-11-23 03:28:59,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:28:59,941 INFO L225 Difference]: With dead ends: 11593 [2021-11-23 03:28:59,942 INFO L226 Difference]: Without dead ends: 9215 [2021-11-23 03:28:59,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:28:59,963 INFO L933 BasicCegarLoop]: 4301 mSDtfsCounter, 272 mSDsluCounter, 13727 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 16897 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:28:59,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 16897 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1525 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2021-11-23 03:28:59,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9215 states. [2021-11-23 03:29:00,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9215 to 9000. [2021-11-23 03:29:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9000 states, 5814 states have (on average 1.3369453044375645) internal successors, (7773), 5927 states have internal predecessors, (7773), 2629 states have call successors, (2629), 559 states have call predecessors, (2629), 556 states have return successors, (2625), 2609 states have call predecessors, (2625), 2625 states have call successors, (2625) [2021-11-23 03:29:00,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 13027 transitions. [2021-11-23 03:29:00,676 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 13027 transitions. Word has length 187 [2021-11-23 03:29:00,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:00,678 INFO L470 AbstractCegarLoop]: Abstraction has 9000 states and 13027 transitions. [2021-11-23 03:29:00,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:29:00,678 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 13027 transitions. [2021-11-23 03:29:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-23 03:29:00,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:00,692 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2021-11-23 03:29:00,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:29:00,693 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1508980719, now seen corresponding path program 1 times [2021-11-23 03:29:00,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:00,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499161905] [2021-11-23 03:29:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:00,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:01,589 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-23 03:29:01,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:01,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499161905] [2021-11-23 03:29:01,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499161905] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:29:01,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255665224] [2021-11-23 03:29:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:01,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:29:01,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:29:01,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:29:01,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:29:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:03,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 5724 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:29:03,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:29:05,440 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-23 03:29:05,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:29:05,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255665224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:05,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:29:05,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-11-23 03:29:05,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284623204] [2021-11-23 03:29:05,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:05,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:29:05,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:05,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:29:05,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:29:05,443 INFO L87 Difference]: Start difference. First operand 9000 states and 13027 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:29:07,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:29:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:35,548 INFO L93 Difference]: Finished difference Result 20339 states and 29453 transitions. [2021-11-23 03:29:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:29:35,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 224 [2021-11-23 03:29:35,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:35,656 INFO L225 Difference]: With dead ends: 20339 [2021-11-23 03:29:35,656 INFO L226 Difference]: Without dead ends: 17966 [2021-11-23 03:29:35,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:29:35,680 INFO L933 BasicCegarLoop]: 4842 mSDtfsCounter, 4209 mSDsluCounter, 10345 mSDsCounter, 0 mSdLazyCounter, 4992 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4209 SdHoareTripleChecker+Valid, 14091 SdHoareTripleChecker+Invalid, 5001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4992 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:35,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4209 Valid, 14091 Invalid, 5001 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 4992 Invalid, 1 Unknown, 0 Unchecked, 29.4s Time] [2021-11-23 03:29:35,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17966 states. [2021-11-23 03:29:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17966 to 17931. [2021-11-23 03:29:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17931 states, 11590 states have (on average 1.3375323554788612) internal successors, (15502), 11818 states have internal predecessors, (15502), 5238 states have call successors, (5238), 1107 states have call predecessors, (5238), 1102 states have return successors, (5243), 5196 states have call predecessors, (5243), 5231 states have call successors, (5243) [2021-11-23 03:29:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17931 states to 17931 states and 25983 transitions. [2021-11-23 03:29:36,616 INFO L78 Accepts]: Start accepts. Automaton has 17931 states and 25983 transitions. Word has length 224 [2021-11-23 03:29:36,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:36,617 INFO L470 AbstractCegarLoop]: Abstraction has 17931 states and 25983 transitions. [2021-11-23 03:29:36,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:29:36,617 INFO L276 IsEmpty]: Start isEmpty. Operand 17931 states and 25983 transitions. [2021-11-23 03:29:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-23 03:29:36,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:36,757 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2021-11-23 03:29:36,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:29:36,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:29:36,958 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:36,960 INFO L85 PathProgramCache]: Analyzing trace with hash -425605351, now seen corresponding path program 1 times [2021-11-23 03:29:36,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:36,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409239029] [2021-11-23 03:29:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:36,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-23 03:29:37,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:37,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409239029] [2021-11-23 03:29:37,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409239029] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:29:37,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657498060] [2021-11-23 03:29:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:37,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:29:37,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:29:37,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:29:37,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:29:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:39,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 5726 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:29:39,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:29:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-23 03:29:41,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:29:41,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657498060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:41,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:29:41,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-11-23 03:29:41,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363181166] [2021-11-23 03:29:41,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:41,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:29:41,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:41,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:29:41,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:29:41,626 INFO L87 Difference]: Start difference. First operand 17931 states and 25983 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:29:43,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:30:12,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:30:12,099 INFO L93 Difference]: Finished difference Result 20332 states and 29437 transitions. [2021-11-23 03:30:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:30:12,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 226 [2021-11-23 03:30:12,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:30:12,211 INFO L225 Difference]: With dead ends: 20332 [2021-11-23 03:30:12,211 INFO L226 Difference]: Without dead ends: 17963 [2021-11-23 03:30:12,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:30:12,237 INFO L933 BasicCegarLoop]: 4841 mSDtfsCounter, 4208 mSDsluCounter, 9438 mSDsCounter, 0 mSdLazyCounter, 4969 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 13188 SdHoareTripleChecker+Invalid, 4975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4969 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:30:12,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4208 Valid, 13188 Invalid, 4975 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 4969 Invalid, 1 Unknown, 0 Unchecked, 29.7s Time] [2021-11-23 03:30:12,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17963 states. [2021-11-23 03:30:12,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17963 to 17928. [2021-11-23 03:30:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17928 states, 11589 states have (on average 1.3373889032703425) internal successors, (15499), 11816 states have internal predecessors, (15499), 5236 states have call successors, (5236), 1107 states have call predecessors, (5236), 1102 states have return successors, (5241), 5194 states have call predecessors, (5241), 5229 states have call successors, (5241) [2021-11-23 03:30:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17928 states to 17928 states and 25976 transitions. [2021-11-23 03:30:13,129 INFO L78 Accepts]: Start accepts. Automaton has 17928 states and 25976 transitions. Word has length 226 [2021-11-23 03:30:13,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:30:13,130 INFO L470 AbstractCegarLoop]: Abstraction has 17928 states and 25976 transitions. [2021-11-23 03:30:13,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:30:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 17928 states and 25976 transitions. [2021-11-23 03:30:13,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-23 03:30:13,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:30:13,149 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:30:13,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:30:13,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:30:13,368 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:30:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:30:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash -189233970, now seen corresponding path program 1 times [2021-11-23 03:30:13,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:30:13,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037473858] [2021-11-23 03:30:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:30:13,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:30:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:30:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-23 03:30:14,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:30:14,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037473858] [2021-11-23 03:30:14,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037473858] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:30:14,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993066412] [2021-11-23 03:30:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:30:14,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:30:14,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:30:14,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:30:14,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:30:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:30:16,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 5728 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:30:16,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:30:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-23 03:30:18,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:30:18,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993066412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:30:18,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:30:18,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-11-23 03:30:18,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807440858] [2021-11-23 03:30:18,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:30:18,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:30:18,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:30:18,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:30:18,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:30:18,131 INFO L87 Difference]: Start difference. First operand 17928 states and 25976 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 3 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:30:20,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:30:41,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:30:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:30:48,316 INFO L93 Difference]: Finished difference Result 20325 states and 29421 transitions. [2021-11-23 03:30:48,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:30:48,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 3 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 228 [2021-11-23 03:30:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:30:48,428 INFO L225 Difference]: With dead ends: 20325 [2021-11-23 03:30:48,429 INFO L226 Difference]: Without dead ends: 17957 [2021-11-23 03:30:48,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:30:48,453 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 4199 mSDsluCounter, 9434 mSDsCounter, 0 mSdLazyCounter, 4962 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4199 SdHoareTripleChecker+Valid, 13183 SdHoareTripleChecker+Invalid, 4965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4962 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:30:48,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4199 Valid, 13183 Invalid, 4965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 4962 Invalid, 1 Unknown, 0 Unchecked, 29.3s Time] [2021-11-23 03:30:48,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17957 states. [2021-11-23 03:30:49,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17957 to 17922. [2021-11-23 03:30:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17922 states, 11586 states have (on average 1.3372173312618678) internal successors, (15493), 11812 states have internal predecessors, (15493), 5234 states have call successors, (5234), 1107 states have call predecessors, (5234), 1101 states have return successors, (5238), 5191 states have call predecessors, (5238), 5226 states have call successors, (5238) [2021-11-23 03:30:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17922 states to 17922 states and 25965 transitions. [2021-11-23 03:30:49,498 INFO L78 Accepts]: Start accepts. Automaton has 17922 states and 25965 transitions. Word has length 228 [2021-11-23 03:30:49,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:30:49,500 INFO L470 AbstractCegarLoop]: Abstraction has 17922 states and 25965 transitions. [2021-11-23 03:30:49,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 3 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:30:49,500 INFO L276 IsEmpty]: Start isEmpty. Operand 17922 states and 25965 transitions. [2021-11-23 03:30:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-23 03:30:49,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:30:49,524 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:30:49,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:30:49,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 03:30:49,741 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:30:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:30:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1015885182, now seen corresponding path program 1 times [2021-11-23 03:30:49,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:30:49,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158614093] [2021-11-23 03:30:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:30:49,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:30:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:30:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-23 03:30:50,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:30:50,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158614093] [2021-11-23 03:30:50,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158614093] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:30:50,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677545705] [2021-11-23 03:30:50,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:30:50,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:30:50,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:30:50,781 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:30:50,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:30:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:30:52,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 5730 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:30:52,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:30:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-23 03:30:54,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:30:54,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677545705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:30:54,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:30:54,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-11-23 03:30:54,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182426996] [2021-11-23 03:30:54,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:30:54,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:30:54,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:30:54,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:30:54,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:30:54,519 INFO L87 Difference]: Start difference. First operand 17922 states and 25965 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:30:56,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:25,514 INFO L93 Difference]: Finished difference Result 18018 states and 26057 transitions. [2021-11-23 03:31:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:31:25,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 230 [2021-11-23 03:31:25,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:25,596 INFO L225 Difference]: With dead ends: 18018 [2021-11-23 03:31:25,596 INFO L226 Difference]: Without dead ends: 15637 [2021-11-23 03:31:25,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:31:25,619 INFO L933 BasicCegarLoop]: 5700 mSDtfsCounter, 4181 mSDsluCounter, 13211 mSDsCounter, 0 mSdLazyCounter, 5319 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4181 SdHoareTripleChecker+Valid, 17584 SdHoareTripleChecker+Invalid, 5320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5319 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:25,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4181 Valid, 17584 Invalid, 5320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5319 Invalid, 1 Unknown, 0 Unchecked, 30.3s Time] [2021-11-23 03:31:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15637 states. [2021-11-23 03:31:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15637 to 15602. [2021-11-23 03:31:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15602 states, 10101 states have (on average 1.3393723393723393) internal successors, (13529), 10296 states have internal predecessors, (13529), 4528 states have call successors, (4528), 975 states have call predecessors, (4528), 972 states have return successors, (4536), 4494 states have call predecessors, (4536), 4524 states have call successors, (4536) [2021-11-23 03:31:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15602 states to 15602 states and 22593 transitions. [2021-11-23 03:31:26,281 INFO L78 Accepts]: Start accepts. Automaton has 15602 states and 22593 transitions. Word has length 230 [2021-11-23 03:31:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:26,282 INFO L470 AbstractCegarLoop]: Abstraction has 15602 states and 22593 transitions. [2021-11-23 03:31:26,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:31:26,282 INFO L276 IsEmpty]: Start isEmpty. Operand 15602 states and 22593 transitions. [2021-11-23 03:31:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-23 03:31:26,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:26,312 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:31:26,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:31:26,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a287952-c6f9-4aa1-a627-a9190fe45458/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 03:31:26,525 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:26,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:26,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1855681373, now seen corresponding path program 1 times [2021-11-23 03:31:26,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:26,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149285052] [2021-11-23 03:31:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:26,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-23 03:31:27,210 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:27,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149285052] [2021-11-23 03:31:27,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149285052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:27,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:31:27,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:31:27,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655177769] [2021-11-23 03:31:27,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:27,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:31:27,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:27,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:31:27,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:31:27,213 INFO L87 Difference]: Start difference. First operand 15602 states and 22593 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-23 03:31:29,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:36,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:36,710 INFO L93 Difference]: Finished difference Result 25638 states and 36987 transitions. [2021-11-23 03:31:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:31:36,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 255 [2021-11-23 03:31:36,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:36,745 INFO L225 Difference]: With dead ends: 25638 [2021-11-23 03:31:36,745 INFO L226 Difference]: Without dead ends: 10045 [2021-11-23 03:31:36,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:31:36,798 INFO L933 BasicCegarLoop]: 4442 mSDtfsCounter, 4538 mSDsluCounter, 5219 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 111 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4538 SdHoareTripleChecker+Valid, 9176 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:36,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4538 Valid, 9176 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 983 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-11-23 03:31:36,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10045 states. [2021-11-23 03:31:37,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10045 to 9989. [2021-11-23 03:31:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9989 states, 6452 states have (on average 1.3357098574085555) internal successors, (8618), 6576 states have internal predecessors, (8618), 2862 states have call successors, (2862), 677 states have call predecessors, (2862), 674 states have return successors, (2867), 2837 states have call predecessors, (2867), 2858 states have call successors, (2867) [2021-11-23 03:31:37,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9989 states to 9989 states and 14347 transitions. [2021-11-23 03:31:37,457 INFO L78 Accepts]: Start accepts. Automaton has 9989 states and 14347 transitions. Word has length 255 [2021-11-23 03:31:37,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:37,458 INFO L470 AbstractCegarLoop]: Abstraction has 9989 states and 14347 transitions. [2021-11-23 03:31:37,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-23 03:31:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 9989 states and 14347 transitions. [2021-11-23 03:31:37,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-23 03:31:37,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:37,478 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 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, 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] [2021-11-23 03:31:37,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:31:37,478 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:37,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:37,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1167635342, now seen corresponding path program 1 times [2021-11-23 03:31:37,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:37,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094369434] [2021-11-23 03:31:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:37,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-23 03:31:38,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:38,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094369434] [2021-11-23 03:31:38,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094369434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:38,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:31:38,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:31:38,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929413128] [2021-11-23 03:31:38,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:38,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:31:38,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:31:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:31:38,045 INFO L87 Difference]: Start difference. First operand 9989 states and 14347 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-23 03:31:40,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:46,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:46,646 INFO L93 Difference]: Finished difference Result 19975 states and 28707 transitions. [2021-11-23 03:31:46,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:31:46,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 262 [2021-11-23 03:31:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:46,680 INFO L225 Difference]: With dead ends: 19975 [2021-11-23 03:31:46,680 INFO L226 Difference]: Without dead ends: 10853 [2021-11-23 03:31:46,711 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 [2021-11-23 03:31:46,712 INFO L933 BasicCegarLoop]: 4475 mSDtfsCounter, 594 mSDsluCounter, 4299 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 8416 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:46,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 8416 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 804 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-23 03:31:46,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10853 states. [2021-11-23 03:31:47,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10853 to 10790. [2021-11-23 03:31:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10790 states, 6995 states have (on average 1.3399571122230165) internal successors, (9373), 7125 states have internal predecessors, (9373), 3044 states have call successors, (3044), 753 states have call predecessors, (3044), 750 states have return successors, (3052), 3019 states have call predecessors, (3052), 3040 states have call successors, (3052) [2021-11-23 03:31:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10790 states to 10790 states and 15469 transitions. [2021-11-23 03:31:47,264 INFO L78 Accepts]: Start accepts. Automaton has 10790 states and 15469 transitions. Word has length 262 [2021-11-23 03:31:47,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:47,264 INFO L470 AbstractCegarLoop]: Abstraction has 10790 states and 15469 transitions. [2021-11-23 03:31:47,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-23 03:31:47,265 INFO L276 IsEmpty]: Start isEmpty. Operand 10790 states and 15469 transitions. [2021-11-23 03:31:47,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-23 03:31:47,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:47,286 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 03:31:47,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 03:31:47,286 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:47,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:47,287 INFO L85 PathProgramCache]: Analyzing trace with hash 532291295, now seen corresponding path program 1 times [2021-11-23 03:31:47,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:47,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091402642] [2021-11-23 03:31:47,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:47,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-23 03:31:47,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:47,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091402642] [2021-11-23 03:31:47,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091402642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:47,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:31:47,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:31:47,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976243406] [2021-11-23 03:31:47,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:47,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:31:47,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:47,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:31:47,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:31:47,960 INFO L87 Difference]: Start difference. First operand 10790 states and 15469 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-23 03:31:50,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:52,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []