./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:16:17,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:16:17,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:16:17,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:16:17,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:16:17,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:16:17,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:16:17,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:16:17,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:16:17,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:16:17,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:16:17,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:16:17,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:16:17,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:16:17,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:16:17,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:16:17,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:16:17,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:16:17,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:16:17,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:16:17,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:16:17,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:16:17,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:16:17,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:16:17,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:16:17,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:16:17,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:16:17,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:16:17,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:16:17,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:16:17,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:16:17,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:16:17,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:16:17,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:16:17,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:16:17,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:16:17,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:16:17,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:16:17,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:16:17,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:16:17,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:16:17,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:16:17,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:16:17,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:16:17,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:16:17,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:16:17,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:16:17,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:16:17,896 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:16:17,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:16:17,897 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:16:17,897 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:16:17,898 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:16:17,898 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:16:17,898 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:16:17,899 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:16:17,899 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:16:17,899 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:16:17,899 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:16:17,899 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:16:17,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:16:17,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:16:17,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:16:17,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:16:17,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:16:17,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:16:17,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:16:17,903 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:16:17,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:16:17,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:16:17,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:16:17,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:16:17,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:16:17,904 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:16:17,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:16:17,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:16:17,905 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:16:17,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:16:17,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:16:17,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:16:17,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f [2022-11-03 02:16:18,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:16:18,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:16:18,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:16:18,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:16:18,281 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:16:18,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2022-11-03 02:16:18,354 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/data/5e1f4ba12/7cb01f584add4a1f9b0ac090c005d041/FLAG7fcf29204 [2022-11-03 02:16:19,233 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:16:19,234 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2022-11-03 02:16:19,294 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/data/5e1f4ba12/7cb01f584add4a1f9b0ac090c005d041/FLAG7fcf29204 [2022-11-03 02:16:19,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/data/5e1f4ba12/7cb01f584add4a1f9b0ac090c005d041 [2022-11-03 02:16:19,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:16:19,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:16:19,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:16:19,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:16:19,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:16:19,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:16:19" (1/1) ... [2022-11-03 02:16:19,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68de032f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:19, skipping insertion in model container [2022-11-03 02:16:19,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:16:19" (1/1) ... [2022-11-03 02:16:19,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:16:19,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:16:21,355 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_340b6ad4-5e07-4690-af56-7205f6a1c7fc/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i[270348,270361] [2022-11-03 02:16:21,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:16:21,552 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:16:21,976 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_340b6ad4-5e07-4690-af56-7205f6a1c7fc/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i[270348,270361] [2022-11-03 02:16:21,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:16:22,356 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:16:22,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22 WrapperNode [2022-11-03 02:16:22,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:16:22,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:16:22,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:16:22,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:16:22,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22" (1/1) ... [2022-11-03 02:16:22,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22" (1/1) ... [2022-11-03 02:16:22,861 INFO L138 Inliner]: procedures = 176, calls = 3575, calls flagged for inlining = 73, calls inlined = 65, statements flattened = 9293 [2022-11-03 02:16:22,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:16:22,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:16:22,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:16:22,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:16:22,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22" (1/1) ... [2022-11-03 02:16:22,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22" (1/1) ... [2022-11-03 02:16:22,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22" (1/1) ... [2022-11-03 02:16:22,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22" (1/1) ... [2022-11-03 02:16:23,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22" (1/1) ... [2022-11-03 02:16:23,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22" (1/1) ... [2022-11-03 02:16:23,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22" (1/1) ... [2022-11-03 02:16:23,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22" (1/1) ... [2022-11-03 02:16:23,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:16:23,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:16:23,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:16:23,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:16:23,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22" (1/1) ... [2022-11-03 02:16:23,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:16:23,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:23,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:16:23,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340b6ad4-5e07-4690-af56-7205f6a1c7fc/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:16:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-11-03 02:16:23,345 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-11-03 02:16:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2022-11-03 02:16:23,346 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2022-11-03 02:16:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_update_device [2022-11-03 02:16:23,346 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_update_device [2022-11-03 02:16:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-11-03 02:16:23,346 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-11-03 02:16:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-03 02:16:23,347 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-03 02:16:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:16:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-11-03 02:16:23,347 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-11-03 02:16:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-03 02:16:23,348 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-03 02:16:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-03 02:16:23,348 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-03 02:16:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure store_tolerance [2022-11-03 02:16:23,348 INFO L138 BoogieDeclarations]: Found implementation of procedure store_tolerance [2022-11-03 02:16:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2022-11-03 02:16:23,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2022-11-03 02:16:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwmenable [2022-11-03 02:16:23,349 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwmenable [2022-11-03 02:16:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:16:23,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:16:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2022-11-03 02:16:23,350 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2022-11-03 02:16:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2022-11-03 02:16:23,350 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2022-11-03 02:16:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2022-11-03 02:16:23,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2022-11-03 02:16:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp1 [2022-11-03 02:16:23,351 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp1 [2022-11-03 02:16:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2022-11-03 02:16:23,351 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2022-11-03 02:16:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-11-03 02:16:23,352 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-11-03 02:16:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure show_tolerance [2022-11-03 02:16:23,352 INFO L138 BoogieDeclarations]: Found implementation of procedure show_tolerance [2022-11-03 02:16:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_mode [2022-11-03 02:16:23,352 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_mode [2022-11-03 02:16:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:16:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:16:23,353 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:16:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:16:23,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:16:23,354 INFO L130 BoogieDeclarations]: Found specification of procedure in_count_from_reg [2022-11-03 02:16:23,354 INFO L138 BoogieDeclarations]: Found implementation of procedure in_count_from_reg [2022-11-03 02:16:23,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:16:23,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:16:23,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:16:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:16:23,355 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:16:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-11-03 02:16:23,355 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-11-03 02:16:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:16:23,356 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_level [2022-11-03 02:16:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_level [2022-11-03 02:16:23,356 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp1 [2022-11-03 02:16:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp1 [2022-11-03 02:16:23,356 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp23 [2022-11-03 02:16:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp23 [2022-11-03 02:16:23,357 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2022-11-03 02:16:23,357 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2022-11-03 02:16:23,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:16:23,357 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-11-03 02:16:23,357 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-11-03 02:16:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:16:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_point [2022-11-03 02:16:23,358 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_point [2022-11-03 02:16:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_write_value [2022-11-03 02:16:23,358 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_write_value [2022-11-03 02:16:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-11-03 02:16:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-11-03 02:16:23,359 INFO L130 BoogieDeclarations]: Found specification of procedure show_thermal_cruise [2022-11-03 02:16:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure show_thermal_cruise [2022-11-03 02:16:23,359 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp23 [2022-11-03 02:16:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp23 [2022-11-03 02:16:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-11-03 02:16:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-11-03 02:16:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-11-03 02:16:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-11-03 02:16:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:16:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_detect [2022-11-03 02:16:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_detect [2022-11-03 02:16:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm_mode [2022-11-03 02:16:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm_mode [2022-11-03 02:16:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-03 02:16:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-03 02:16:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:16:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-11-03 02:16:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-11-03 02:16:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:16:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwmenable [2022-11-03 02:16:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwmenable [2022-11-03 02:16:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_read_value [2022-11-03 02:16:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_read_value [2022-11-03 02:16:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-11-03 02:16:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-11-03 02:16:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2022-11-03 02:16:23,364 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2022-11-03 02:16:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_level [2022-11-03 02:16:23,364 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_level [2022-11-03 02:16:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2022-11-03 02:16:23,364 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2022-11-03 02:16:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure store_thermal_cruise [2022-11-03 02:16:23,365 INFO L138 BoogieDeclarations]: Found implementation of procedure store_thermal_cruise [2022-11-03 02:16:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:16:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_point [2022-11-03 02:16:23,365 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_point [2022-11-03 02:16:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:16:23,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:16:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:16:23,366 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:16:24,440 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:16:24,445 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:16:35,351 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:16:40,356 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:16:40,357 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:16:40,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:16:40 BoogieIcfgContainer [2022-11-03 02:16:40,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:16:40,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:16:40,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:16:40,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:16:40,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:16:19" (1/3) ... [2022-11-03 02:16:40,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c71c57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:16:40, skipping insertion in model container [2022-11-03 02:16:40,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:22" (2/3) ... [2022-11-03 02:16:40,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c71c57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:16:40, skipping insertion in model container [2022-11-03 02:16:40,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:16:40" (3/3) ... [2022-11-03 02:16:40,381 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2022-11-03 02:16:40,401 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:16:40,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:16:40,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:16:40,526 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5fe34719, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:16:40,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:16:40,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 1664 states, 1181 states have (on average 1.5927180355630821) internal successors, (1881), 1188 states have internal predecessors, (1881), 430 states have call successors, (430), 51 states have call predecessors, (430), 51 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) [2022-11-03 02:16:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 02:16:40,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:40,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:40,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:40,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1048436307, now seen corresponding path program 1 times [2022-11-03 02:16:40,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:40,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743773427] [2022-11-03 02:16:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:40,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:41,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:41,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743773427] [2022-11-03 02:16:41,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743773427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:41,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:41,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:41,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312036844] [2022-11-03 02:16:41,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:41,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:41,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:42,001 INFO L87 Difference]: Start difference. First operand has 1664 states, 1181 states have (on average 1.5927180355630821) internal successors, (1881), 1188 states have internal predecessors, (1881), 430 states have call successors, (430), 51 states have call predecessors, (430), 51 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:16:44,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:44,584 INFO L93 Difference]: Finished difference Result 4983 states and 8679 transitions. [2022-11-03 02:16:44,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:44,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-11-03 02:16:44,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:44,635 INFO L225 Difference]: With dead ends: 4983 [2022-11-03 02:16:44,635 INFO L226 Difference]: Without dead ends: 3316 [2022-11-03 02:16:44,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:44,665 INFO L413 NwaCegarLoop]: 2919 mSDtfsCounter, 2717 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2717 SdHoareTripleChecker+Valid, 5411 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:44,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2717 Valid, 5411 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 02:16:44,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2022-11-03 02:16:44,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 3303. [2022-11-03 02:16:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 2349 states have (on average 1.591315453384419) internal successors, (3738), 2354 states have internal predecessors, (3738), 853 states have call successors, (853), 101 states have call predecessors, (853), 100 states have return successors, (847), 847 states have call predecessors, (847), 847 states have call successors, (847) [2022-11-03 02:16:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 5438 transitions. [2022-11-03 02:16:44,957 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 5438 transitions. Word has length 28 [2022-11-03 02:16:44,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:44,957 INFO L495 AbstractCegarLoop]: Abstraction has 3303 states and 5438 transitions. [2022-11-03 02:16:44,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:16:44,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 5438 transitions. [2022-11-03 02:16:44,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:16:44,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:44,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:44,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:16:44,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:44,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1251569572, now seen corresponding path program 1 times [2022-11-03 02:16:44,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:44,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415845436] [2022-11-03 02:16:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:44,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:46,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:46,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415845436] [2022-11-03 02:16:46,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415845436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:46,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:46,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:46,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584188102] [2022-11-03 02:16:46,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:46,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:46,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:46,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:46,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:46,068 INFO L87 Difference]: Start difference. First operand 3303 states and 5438 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:16:48,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:48,679 INFO L93 Difference]: Finished difference Result 9890 states and 16282 transitions. [2022-11-03 02:16:48,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:48,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-03 02:16:48,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:48,728 INFO L225 Difference]: With dead ends: 9890 [2022-11-03 02:16:48,728 INFO L226 Difference]: Without dead ends: 6588 [2022-11-03 02:16:48,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:48,750 INFO L413 NwaCegarLoop]: 2935 mSDtfsCounter, 2711 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 5423 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:48,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2711 Valid, 5423 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 02:16:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2022-11-03 02:16:49,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 6575. [2022-11-03 02:16:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6575 states, 4678 states have (on average 1.5908507909362977) internal successors, (7442), 4683 states have internal predecessors, (7442), 1696 states have call successors, (1696), 201 states have call predecessors, (1696), 200 states have return successors, (1690), 1690 states have call predecessors, (1690), 1690 states have call successors, (1690) [2022-11-03 02:16:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 10828 transitions. [2022-11-03 02:16:49,064 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 10828 transitions. Word has length 26 [2022-11-03 02:16:49,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:49,065 INFO L495 AbstractCegarLoop]: Abstraction has 6575 states and 10828 transitions. [2022-11-03 02:16:49,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:16:49,065 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 10828 transitions. [2022-11-03 02:16:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 02:16:49,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:49,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:49,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:16:49,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:49,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:49,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1162165309, now seen corresponding path program 1 times [2022-11-03 02:16:49,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:49,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487153360] [2022-11-03 02:16:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:49,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:49,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:49,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487153360] [2022-11-03 02:16:49,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487153360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:49,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:49,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:49,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387994994] [2022-11-03 02:16:49,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:49,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:49,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:49,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:49,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:49,800 INFO L87 Difference]: Start difference. First operand 6575 states and 10828 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:16:52,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:52,541 INFO L93 Difference]: Finished difference Result 19690 states and 32424 transitions. [2022-11-03 02:16:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:52,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-11-03 02:16:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:52,645 INFO L225 Difference]: With dead ends: 19690 [2022-11-03 02:16:52,645 INFO L226 Difference]: Without dead ends: 13116 [2022-11-03 02:16:52,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:52,687 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 2710 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 5449 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:52,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2710 Valid, 5449 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:16:52,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13116 states. [2022-11-03 02:16:53,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13116 to 13103. [2022-11-03 02:16:53,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13103 states, 9324 states have (on average 1.5903045903045903) internal successors, (14828), 9329 states have internal predecessors, (14828), 3378 states have call successors, (3378), 401 states have call predecessors, (3378), 400 states have return successors, (3372), 3372 states have call predecessors, (3372), 3372 states have call successors, (3372) [2022-11-03 02:16:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13103 states to 13103 states and 21578 transitions. [2022-11-03 02:16:53,328 INFO L78 Accepts]: Start accepts. Automaton has 13103 states and 21578 transitions. Word has length 27 [2022-11-03 02:16:53,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:53,328 INFO L495 AbstractCegarLoop]: Abstraction has 13103 states and 21578 transitions. [2022-11-03 02:16:53,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:16:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand 13103 states and 21578 transitions. [2022-11-03 02:16:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 02:16:53,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:53,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:53,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:16:53,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:53,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:53,332 INFO L85 PathProgramCache]: Analyzing trace with hash 68649545, now seen corresponding path program 1 times [2022-11-03 02:16:53,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:53,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962808445] [2022-11-03 02:16:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:53,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:54,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:54,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962808445] [2022-11-03 02:16:54,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962808445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:54,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:54,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:54,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238162060] [2022-11-03 02:16:54,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:54,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:54,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:54,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:54,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:54,030 INFO L87 Difference]: Start difference. First operand 13103 states and 21578 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:16:56,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:56,863 INFO L93 Difference]: Finished difference Result 39242 states and 64618 transitions. [2022-11-03 02:16:56,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:56,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-11-03 02:16:56,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:56,992 INFO L225 Difference]: With dead ends: 39242 [2022-11-03 02:16:56,992 INFO L226 Difference]: Without dead ends: 26140 [2022-11-03 02:16:57,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:57,070 INFO L413 NwaCegarLoop]: 3082 mSDtfsCounter, 2709 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2709 SdHoareTripleChecker+Valid, 5570 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:57,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2709 Valid, 5570 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 02:16:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26140 states. [2022-11-03 02:16:58,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26140 to 26127. [2022-11-03 02:16:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26127 states, 18592 states have (on average 1.5897160068846816) internal successors, (29556), 18597 states have internal predecessors, (29556), 6734 states have call successors, (6734), 801 states have call predecessors, (6734), 800 states have return successors, (6728), 6728 states have call predecessors, (6728), 6728 states have call successors, (6728) [2022-11-03 02:16:58,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26127 states to 26127 states and 43018 transitions. [2022-11-03 02:16:58,566 INFO L78 Accepts]: Start accepts. Automaton has 26127 states and 43018 transitions. Word has length 28 [2022-11-03 02:16:58,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:58,567 INFO L495 AbstractCegarLoop]: Abstraction has 26127 states and 43018 transitions. [2022-11-03 02:16:58,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:16:58,568 INFO L276 IsEmpty]: Start isEmpty. Operand 26127 states and 43018 transitions. [2022-11-03 02:16:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:16:58,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:58,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:58,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:16:58,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:58,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:58,572 INFO L85 PathProgramCache]: Analyzing trace with hash -157472178, now seen corresponding path program 1 times [2022-11-03 02:16:58,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:58,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144421440] [2022-11-03 02:16:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:58,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:59,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:59,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144421440] [2022-11-03 02:16:59,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144421440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:59,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:59,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:59,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465507068] [2022-11-03 02:16:59,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:59,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:59,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:59,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:59,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:59,349 INFO L87 Difference]: Start difference. First operand 26127 states and 43018 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:17:02,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:02,827 INFO L93 Difference]: Finished difference Result 78250 states and 128826 transitions. [2022-11-03 02:17:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:17:02,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2022-11-03 02:17:02,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:03,129 INFO L225 Difference]: With dead ends: 78250 [2022-11-03 02:17:03,129 INFO L226 Difference]: Without dead ends: 52124 [2022-11-03 02:17:03,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:03,282 INFO L413 NwaCegarLoop]: 3094 mSDtfsCounter, 2702 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:03,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 5582 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 02:17:03,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52124 states. [2022-11-03 02:17:06,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52124 to 52111. [2022-11-03 02:17:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52111 states, 37080 states have (on average 1.5891046386192018) internal successors, (58924), 37085 states have internal predecessors, (58924), 13430 states have call successors, (13430), 1601 states have call predecessors, (13430), 1600 states have return successors, (13424), 13424 states have call predecessors, (13424), 13424 states have call successors, (13424) [2022-11-03 02:17:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52111 states to 52111 states and 85778 transitions. [2022-11-03 02:17:06,412 INFO L78 Accepts]: Start accepts. Automaton has 52111 states and 85778 transitions. Word has length 35 [2022-11-03 02:17:06,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:06,413 INFO L495 AbstractCegarLoop]: Abstraction has 52111 states and 85778 transitions. [2022-11-03 02:17:06,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:17:06,413 INFO L276 IsEmpty]: Start isEmpty. Operand 52111 states and 85778 transitions. [2022-11-03 02:17:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 02:17:06,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:06,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:06,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:17:06,416 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:06,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1603533615, now seen corresponding path program 1 times [2022-11-03 02:17:06,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:06,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191848103] [2022-11-03 02:17:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:06,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:17:07,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:07,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191848103] [2022-11-03 02:17:07,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191848103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:07,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:07,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:17:07,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900839675] [2022-11-03 02:17:07,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:07,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:17:07,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:17:07,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:07,354 INFO L87 Difference]: Start difference. First operand 52111 states and 85778 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:17:12,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:12,142 INFO L93 Difference]: Finished difference Result 156074 states and 256882 transitions. [2022-11-03 02:17:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:17:12,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-11-03 02:17:12,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:12,966 INFO L225 Difference]: With dead ends: 156074 [2022-11-03 02:17:12,967 INFO L226 Difference]: Without dead ends: 103964 [2022-11-03 02:17:13,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:13,218 INFO L413 NwaCegarLoop]: 3111 mSDtfsCounter, 2705 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:13,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2705 Valid, 5599 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 02:17:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103964 states. [2022-11-03 02:17:17,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103964 to 103951. [2022-11-03 02:17:17,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103951 states, 73960 states have (on average 1.5884802595997836) internal successors, (117484), 73965 states have internal predecessors, (117484), 26790 states have call successors, (26790), 3201 states have call predecessors, (26790), 3200 states have return successors, (26784), 26784 states have call predecessors, (26784), 26784 states have call successors, (26784) [2022-11-03 02:17:18,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103951 states to 103951 states and 171058 transitions. [2022-11-03 02:17:18,581 INFO L78 Accepts]: Start accepts. Automaton has 103951 states and 171058 transitions. Word has length 32 [2022-11-03 02:17:18,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:18,582 INFO L495 AbstractCegarLoop]: Abstraction has 103951 states and 171058 transitions. [2022-11-03 02:17:18,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:17:18,582 INFO L276 IsEmpty]: Start isEmpty. Operand 103951 states and 171058 transitions. [2022-11-03 02:17:18,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:17:18,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:18,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:18,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:17:18,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:18,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:18,584 INFO L85 PathProgramCache]: Analyzing trace with hash -384778313, now seen corresponding path program 1 times [2022-11-03 02:17:18,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:18,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745114211] [2022-11-03 02:17:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:18,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:17:19,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:19,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745114211] [2022-11-03 02:17:19,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745114211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:19,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:19,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:17:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215895053] [2022-11-03 02:17:19,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:19,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:17:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:17:19,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:19,246 INFO L87 Difference]: Start difference. First operand 103951 states and 171058 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:17:26,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:26,962 INFO L93 Difference]: Finished difference Result 311594 states and 512722 transitions. [2022-11-03 02:17:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:17:26,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-03 02:17:26,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:28,342 INFO L225 Difference]: With dead ends: 311594 [2022-11-03 02:17:28,342 INFO L226 Difference]: Without dead ends: 207644 [2022-11-03 02:17:28,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:28,690 INFO L413 NwaCegarLoop]: 3310 mSDtfsCounter, 2714 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 5801 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:28,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2714 Valid, 5801 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 02:17:28,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207644 states.