./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/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_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/bin/utaipan-EQgc7hIp5V/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_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/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_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/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 e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:40:24,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:40:24,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:40:24,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:40:24,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:40:24,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:40:24,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:40:24,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:40:24,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:40:24,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:40:24,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:40:24,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:40:24,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:40:24,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:40:24,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:40:24,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:40:24,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:40:24,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:40:24,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:40:24,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:40:24,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:40:24,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:40:24,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:40:24,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:40:24,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:40:24,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:40:24,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:40:24,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:40:24,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:40:24,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:40:24,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:40:24,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:40:24,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:40:24,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:40:24,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:40:24,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:40:24,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:40:24,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:40:24,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:40:24,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:40:24,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:40:24,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:40:24,925 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:40:24,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:40:24,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:40:24,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:40:24,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:40:24,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:40:24,928 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:40:24,929 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:40:24,929 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:40:24,930 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:40:24,930 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:40:24,930 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:40:24,931 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:40:24,931 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:40:24,932 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:40:24,932 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:40:24,933 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:40:24,933 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:40:24,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:40:24,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:40:24,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:40:24,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:40:24,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:40:24,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:40:24,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:40:24,937 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:40:24,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:40:24,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:40:24,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:40:24,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:40:24,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:40:24,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:40:24,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:40:24,941 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:40:24,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:40:24,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:40:24,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:40:24,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:40:24,942 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_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f [2021-11-23 03:40:25,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:40:25,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:40:25,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:40:25,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:40:25,310 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:40:25,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-11-23 03:40:25,418 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/bin/utaipan-EQgc7hIp5V/data/2c740ab5d/53b6f8b8031643ac82e2edbe2973d812/FLAGb518ab30a [2021-11-23 03:40:26,452 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:40:26,454 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-11-23 03:40:26,520 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/bin/utaipan-EQgc7hIp5V/data/2c740ab5d/53b6f8b8031643ac82e2edbe2973d812/FLAGb518ab30a [2021-11-23 03:40:26,802 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/bin/utaipan-EQgc7hIp5V/data/2c740ab5d/53b6f8b8031643ac82e2edbe2973d812 [2021-11-23 03:40:26,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:40:26,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:40:26,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:40:26,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:40:26,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:40:26,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:40:26" (1/1) ... [2021-11-23 03:40:26,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d40124d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:26, skipping insertion in model container [2021-11-23 03:40:26,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:40:26" (1/1) ... [2021-11-23 03:40:26,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:40:27,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:40:29,026 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_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i[270348,270361] [2021-11-23 03:40:29,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:40:29,252 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:40:29,623 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_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i[270348,270361] [2021-11-23 03:40:29,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:40:30,109 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:40:30,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:30 WrapperNode [2021-11-23 03:40:30,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:40:30,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:40:30,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:40:30,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:40:30,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:30" (1/1) ... [2021-11-23 03:40:30,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:30" (1/1) ... [2021-11-23 03:40:30,563 INFO L137 Inliner]: procedures = 176, calls = 3575, calls flagged for inlining = 73, calls inlined = 65, statements flattened = 9293 [2021-11-23 03:40:30,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:40:30,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:40:30,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:40:30,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:40:30,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:30" (1/1) ... [2021-11-23 03:40:30,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:30" (1/1) ... [2021-11-23 03:40:30,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:30" (1/1) ... [2021-11-23 03:40:30,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:30" (1/1) ... [2021-11-23 03:40:30,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:30" (1/1) ... [2021-11-23 03:40:31,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:30" (1/1) ... [2021-11-23 03:40:31,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:30" (1/1) ... [2021-11-23 03:40:31,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:40:31,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:40:31,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:40:31,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:40:31,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:30" (1/1) ... [2021-11-23 03:40:31,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:40:31,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:40:31,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:40:31,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a2dff-314e-4aa6-8b7d-934acd0a8c4a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:40:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-11-23 03:40:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-11-23 03:40:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-11-23 03:40:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-11-23 03:40:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_update_device [2021-11-23 03:40:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_update_device [2021-11-23 03:40:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-11-23 03:40:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-11-23 03:40:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-11-23 03:40:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-11-23 03:40:31,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:40:31,267 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-11-23 03:40:31,267 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-11-23 03:40:31,267 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-23 03:40:31,268 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-23 03:40:31,268 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-11-23 03:40:31,268 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-11-23 03:40:31,268 INFO L130 BoogieDeclarations]: Found specification of procedure store_tolerance [2021-11-23 03:40:31,268 INFO L138 BoogieDeclarations]: Found implementation of procedure store_tolerance [2021-11-23 03:40:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-11-23 03:40:31,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-11-23 03:40:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwmenable [2021-11-23 03:40:31,269 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwmenable [2021-11-23 03:40:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:40:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:40:31,270 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-11-23 03:40:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-11-23 03:40:31,270 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-11-23 03:40:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-11-23 03:40:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-11-23 03:40:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-11-23 03:40:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp1 [2021-11-23 03:40:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp1 [2021-11-23 03:40:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-11-23 03:40:31,272 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-11-23 03:40:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-11-23 03:40:31,272 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-11-23 03:40:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure show_tolerance [2021-11-23 03:40:31,273 INFO L138 BoogieDeclarations]: Found implementation of procedure show_tolerance [2021-11-23 03:40:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_mode [2021-11-23 03:40:31,273 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_mode [2021-11-23 03:40:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:40:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 03:40:31,274 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 03:40:31,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 03:40:31,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 03:40:31,274 INFO L130 BoogieDeclarations]: Found specification of procedure in_count_from_reg [2021-11-23 03:40:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure in_count_from_reg [2021-11-23 03:40:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:40:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:40:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:40:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-23 03:40:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-23 03:40:31,276 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-11-23 03:40:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-11-23 03:40:31,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:40:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_level [2021-11-23 03:40:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_level [2021-11-23 03:40:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp1 [2021-11-23 03:40:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp1 [2021-11-23 03:40:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp23 [2021-11-23 03:40:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp23 [2021-11-23 03:40:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-11-23 03:40:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-11-23 03:40:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:40:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-11-23 03:40:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-11-23 03:40:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:40:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_point [2021-11-23 03:40:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_point [2021-11-23 03:40:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_write_value [2021-11-23 03:40:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_write_value [2021-11-23 03:40:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-11-23 03:40:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-11-23 03:40:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure show_thermal_cruise [2021-11-23 03:40:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure show_thermal_cruise [2021-11-23 03:40:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp23 [2021-11-23 03:40:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp23 [2021-11-23 03:40:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-11-23 03:40:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-11-23 03:40:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-11-23 03:40:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-11-23 03:40:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:40:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_detect [2021-11-23 03:40:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_detect [2021-11-23 03:40:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm_mode [2021-11-23 03:40:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm_mode [2021-11-23 03:40:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-11-23 03:40:31,284 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-11-23 03:40:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:40:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-11-23 03:40:31,284 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-11-23 03:40:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:40:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwmenable [2021-11-23 03:40:31,285 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwmenable [2021-11-23 03:40:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_read_value [2021-11-23 03:40:31,285 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_read_value [2021-11-23 03:40:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-11-23 03:40:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-11-23 03:40:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-11-23 03:40:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-11-23 03:40:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_level [2021-11-23 03:40:31,287 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_level [2021-11-23 03:40:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-11-23 03:40:31,287 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-11-23 03:40:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure store_thermal_cruise [2021-11-23 03:40:31,288 INFO L138 BoogieDeclarations]: Found implementation of procedure store_thermal_cruise [2021-11-23 03:40:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:40:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_point [2021-11-23 03:40:31,288 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_point [2021-11-23 03:40:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:40:31,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:40:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 03:40:31,289 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 03:40:32,614 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:40:32,618 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:40:44,627 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:40:49,908 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:40:49,908 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:40:49,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:49 BoogieIcfgContainer [2021-11-23 03:40:49,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:40:49,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:40:49,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:40:49,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:40:49,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:40:26" (1/3) ... [2021-11-23 03:40:49,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762afc01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:40:49, skipping insertion in model container [2021-11-23 03:40:49,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:30" (2/3) ... [2021-11-23 03:40:49,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762afc01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:40:49, skipping insertion in model container [2021-11-23 03:40:49,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:49" (3/3) ... [2021-11-23 03:40:49,933 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-11-23 03:40:49,940 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:40:49,940 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:40:50,010 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:40:50,019 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 03:40:50,019 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:40:50,109 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) [2021-11-23 03:40:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 03:40:50,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:40:50,124 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:40:50,126 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:40:50,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:40:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash 68649545, now seen corresponding path program 1 times [2021-11-23 03:40:50,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:40:50,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948734206] [2021-11-23 03:40:50,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:50,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:40:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:40:51,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:40:51,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948734206] [2021-11-23 03:40:51,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948734206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:40:51,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:40:51,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:40:51,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124349114] [2021-11-23 03:40:51,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:40:51,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:40:51,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:40:51,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:40:51,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:40:51,600 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) [2021-11-23 03:40:54,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:40:54,254 INFO L93 Difference]: Finished difference Result 4979 states and 8671 transitions. [2021-11-23 03:40:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:40:54,258 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 [2021-11-23 03:40:54,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:40:54,316 INFO L225 Difference]: With dead ends: 4979 [2021-11-23 03:40:54,317 INFO L226 Difference]: Without dead ends: 3312 [2021-11-23 03:40:54,352 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 03:40:54,357 INFO L933 BasicCegarLoop]: 2918 mSDtfsCounter, 2711 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 5407 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:40:54,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2711 Valid, 5407 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 03:40:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2021-11-23 03:40:54,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 3299. [2021-11-23 03:40:54,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2346 states have (on average 1.591219096334186) internal successors, (3733), 2351 states have internal predecessors, (3733), 852 states have call successors, (852), 101 states have call predecessors, (852), 100 states have return successors, (846), 846 states have call predecessors, (846), 846 states have call successors, (846) [2021-11-23 03:40:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 5431 transitions. [2021-11-23 03:40:54,712 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 5431 transitions. Word has length 28 [2021-11-23 03:40:54,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:40:54,713 INFO L470 AbstractCegarLoop]: Abstraction has 3299 states and 5431 transitions. [2021-11-23 03:40:54,713 INFO L471 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) [2021-11-23 03:40:54,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 5431 transitions. [2021-11-23 03:40:54,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:40:54,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:40:54,717 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:40:54,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:40:54,718 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:40:54,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:40:54,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1251569572, now seen corresponding path program 1 times [2021-11-23 03:40:54,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:40:54,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778831150] [2021-11-23 03:40:54,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:54,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:40:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:40:55,525 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:40:55,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778831150] [2021-11-23 03:40:55,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778831150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:40:55,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:40:55,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:40:55,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627121587] [2021-11-23 03:40:55,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:40:55,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:40:55,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:40:55,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:40:55,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:40:55,531 INFO L87 Difference]: Start difference. First operand 3299 states and 5431 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) [2021-11-23 03:40:57,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:40:57,904 INFO L93 Difference]: Finished difference Result 9878 states and 16261 transitions. [2021-11-23 03:40:57,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:40:57,905 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 [2021-11-23 03:40:57,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:40:57,997 INFO L225 Difference]: With dead ends: 9878 [2021-11-23 03:40:57,997 INFO L226 Difference]: Without dead ends: 6580 [2021-11-23 03:40:58,031 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 03:40:58,034 INFO L933 BasicCegarLoop]: 2928 mSDtfsCounter, 2711 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 5416 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:40:58,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2711 Valid, 5416 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 03:40:58,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2021-11-23 03:40:58,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 6567. [2021-11-23 03:40:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6567 states, 4672 states have (on average 1.5907534246575343) internal successors, (7432), 4677 states have internal predecessors, (7432), 1694 states have call successors, (1694), 201 states have call predecessors, (1694), 200 states have return successors, (1688), 1688 states have call predecessors, (1688), 1688 states have call successors, (1688) [2021-11-23 03:40:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6567 states to 6567 states and 10814 transitions. [2021-11-23 03:40:58,537 INFO L78 Accepts]: Start accepts. Automaton has 6567 states and 10814 transitions. Word has length 26 [2021-11-23 03:40:58,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:40:58,537 INFO L470 AbstractCegarLoop]: Abstraction has 6567 states and 10814 transitions. [2021-11-23 03:40:58,538 INFO L471 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) [2021-11-23 03:40:58,538 INFO L276 IsEmpty]: Start isEmpty. Operand 6567 states and 10814 transitions. [2021-11-23 03:40:58,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 03:40:58,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:40:58,544 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:40:58,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:40:58,545 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:40:58,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:40:58,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1048436307, now seen corresponding path program 1 times [2021-11-23 03:40:58,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:40:58,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301645208] [2021-11-23 03:40:58,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:58,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:40:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:40:59,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:40:59,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301645208] [2021-11-23 03:40:59,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301645208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:40:59,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:40:59,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:40:59,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408574357] [2021-11-23 03:40:59,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:40:59,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:40:59,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:40:59,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:40:59,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:40:59,286 INFO L87 Difference]: Start difference. First operand 6567 states and 10814 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) [2021-11-23 03:41:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:01,843 INFO L93 Difference]: Finished difference Result 19682 states and 32410 transitions. [2021-11-23 03:41:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:01,844 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 [2021-11-23 03:41:01,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:02,014 INFO L225 Difference]: With dead ends: 19682 [2021-11-23 03:41:02,015 INFO L226 Difference]: Without dead ends: 13116 [2021-11-23 03:41:02,058 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 03:41:02,060 INFO L933 BasicCegarLoop]: 2961 mSDtfsCounter, 2715 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2715 SdHoareTripleChecker+Valid, 5452 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:02,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2715 Valid, 5452 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 03:41:02,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13116 states. [2021-11-23 03:41:03,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13116 to 13103. [2021-11-23 03:41:03,215 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) [2021-11-23 03:41:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13103 states to 13103 states and 21578 transitions. [2021-11-23 03:41:03,604 INFO L78 Accepts]: Start accepts. Automaton has 13103 states and 21578 transitions. Word has length 28 [2021-11-23 03:41:03,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:03,605 INFO L470 AbstractCegarLoop]: Abstraction has 13103 states and 21578 transitions. [2021-11-23 03:41:03,606 INFO L471 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) [2021-11-23 03:41:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 13103 states and 21578 transitions. [2021-11-23 03:41:03,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 03:41:03,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:03,608 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:41:03,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:41:03,609 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:03,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:03,610 INFO L85 PathProgramCache]: Analyzing trace with hash -384778313, now seen corresponding path program 1 times [2021-11-23 03:41:03,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:03,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530544056] [2021-11-23 03:41:03,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:03,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:04,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:04,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530544056] [2021-11-23 03:41:04,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530544056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:04,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:04,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:41:04,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761769457] [2021-11-23 03:41:04,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:04,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:04,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:04,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:04,121 INFO L87 Difference]: Start difference. First operand 13103 states and 21578 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) [2021-11-23 03:41:06,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:06,742 INFO L93 Difference]: Finished difference Result 39274 states and 64674 transitions. [2021-11-23 03:41:06,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:06,743 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 [2021-11-23 03:41:06,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:06,914 INFO L225 Difference]: With dead ends: 39274 [2021-11-23 03:41:06,914 INFO L226 Difference]: Without dead ends: 26172 [2021-11-23 03:41:06,988 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 03:41:07,000 INFO L933 BasicCegarLoop]: 2967 mSDtfsCounter, 2714 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 5458 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:07,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2714 Valid, 5458 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 03:41:07,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26172 states. [2021-11-23 03:41:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26172 to 26159. [2021-11-23 03:41:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26159 states, 18616 states have (on average 1.5898152127202407) internal successors, (29596), 18621 states have internal predecessors, (29596), 6742 states have call successors, (6742), 801 states have call predecessors, (6742), 800 states have return successors, (6736), 6736 states have call predecessors, (6736), 6736 states have call successors, (6736) [2021-11-23 03:41:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26159 states to 26159 states and 43074 transitions. [2021-11-23 03:41:08,911 INFO L78 Accepts]: Start accepts. Automaton has 26159 states and 43074 transitions. Word has length 29 [2021-11-23 03:41:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:08,912 INFO L470 AbstractCegarLoop]: Abstraction has 26159 states and 43074 transitions. [2021-11-23 03:41:08,912 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-11-23 03:41:08,913 INFO L276 IsEmpty]: Start isEmpty. Operand 26159 states and 43074 transitions. [2021-11-23 03:41:08,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:41:08,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:08,916 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:41:08,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:41:08,920 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:08,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:08,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1162165309, now seen corresponding path program 1 times [2021-11-23 03:41:08,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:08,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792256482] [2021-11-23 03:41:08,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:08,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:09,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:09,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792256482] [2021-11-23 03:41:09,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792256482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:09,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:09,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:41:09,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873379821] [2021-11-23 03:41:09,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:09,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:09,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:09,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:09,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:09,494 INFO L87 Difference]: Start difference. First operand 26159 states and 43074 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) [2021-11-23 03:41:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:13,523 INFO L93 Difference]: Finished difference Result 78346 states and 128994 transitions. [2021-11-23 03:41:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:13,523 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 [2021-11-23 03:41:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:13,882 INFO L225 Difference]: With dead ends: 78346 [2021-11-23 03:41:13,882 INFO L226 Difference]: Without dead ends: 52188 [2021-11-23 03:41:14,053 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 03:41:14,057 INFO L933 BasicCegarLoop]: 2992 mSDtfsCounter, 2710 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 5480 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:14,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2710 Valid, 5480 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 03:41:14,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52188 states. [2021-11-23 03:41:16,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52188 to 52175. [2021-11-23 03:41:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52175 states, 37128 states have (on average 1.5892049127343244) internal successors, (59004), 37133 states have internal predecessors, (59004), 13446 states have call successors, (13446), 1601 states have call predecessors, (13446), 1600 states have return successors, (13440), 13440 states have call predecessors, (13440), 13440 states have call successors, (13440) [2021-11-23 03:41:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52175 states to 52175 states and 85890 transitions. [2021-11-23 03:41:17,302 INFO L78 Accepts]: Start accepts. Automaton has 52175 states and 85890 transitions. Word has length 27 [2021-11-23 03:41:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:17,303 INFO L470 AbstractCegarLoop]: Abstraction has 52175 states and 85890 transitions. [2021-11-23 03:41:17,303 INFO L471 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) [2021-11-23 03:41:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 52175 states and 85890 transitions. [2021-11-23 03:41:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 03:41:17,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:17,308 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:41:17,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:41:17,308 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:17,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:17,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1603533615, now seen corresponding path program 1 times [2021-11-23 03:41:17,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:17,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707080461] [2021-11-23 03:41:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:17,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:18,147 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:18,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707080461] [2021-11-23 03:41:18,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707080461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:18,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:18,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:41:18,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033983633] [2021-11-23 03:41:18,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:18,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:18,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:18,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:18,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:18,151 INFO L87 Difference]: Start difference. First operand 52175 states and 85890 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) [2021-11-23 03:41:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:22,654 INFO L93 Difference]: Finished difference Result 156266 states and 257218 transitions. [2021-11-23 03:41:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:22,655 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 [2021-11-23 03:41:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:23,603 INFO L225 Difference]: With dead ends: 156266 [2021-11-23 03:41:23,605 INFO L226 Difference]: Without dead ends: 104092 [2021-11-23 03:41:23,856 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 03:41:23,858 INFO L933 BasicCegarLoop]: 3113 mSDtfsCounter, 2705 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 5601 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:23,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2705 Valid, 5601 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:41:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104092 states. [2021-11-23 03:41:28,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104092 to 104079. [2021-11-23 03:41:28,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104079 states, 74056 states have (on average 1.588581613913795) internal successors, (117644), 74061 states have internal predecessors, (117644), 26822 states have call successors, (26822), 3201 states have call predecessors, (26822), 3200 states have return successors, (26816), 26816 states have call predecessors, (26816), 26816 states have call successors, (26816) [2021-11-23 03:41:28,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104079 states to 104079 states and 171282 transitions. [2021-11-23 03:41:28,944 INFO L78 Accepts]: Start accepts. Automaton has 104079 states and 171282 transitions. Word has length 32 [2021-11-23 03:41:28,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:28,944 INFO L470 AbstractCegarLoop]: Abstraction has 104079 states and 171282 transitions. [2021-11-23 03:41:28,945 INFO L471 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) [2021-11-23 03:41:28,945 INFO L276 IsEmpty]: Start isEmpty. Operand 104079 states and 171282 transitions. [2021-11-23 03:41:28,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 03:41:28,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:28,947 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:41:28,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:41:28,947 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:28,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:28,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1207079305, now seen corresponding path program 1 times [2021-11-23 03:41:28,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:28,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702250555] [2021-11-23 03:41:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:28,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:29,914 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:29,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702250555] [2021-11-23 03:41:29,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702250555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:29,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:29,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:41:29,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805097641] [2021-11-23 03:41:29,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:29,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:29,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:29,917 INFO L87 Difference]: Start difference. First operand 104079 states and 171282 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-23 03:41:36,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:36,995 INFO L93 Difference]: Finished difference Result 311978 states and 513394 transitions. [2021-11-23 03:41:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 30 [2021-11-23 03:41:36,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:38,586 INFO L225 Difference]: With dead ends: 311978 [2021-11-23 03:41:38,586 INFO L226 Difference]: Without dead ends: 207900 [2021-11-23 03:41:38,977 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 03:41:38,978 INFO L933 BasicCegarLoop]: 3307 mSDtfsCounter, 2713 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2713 SdHoareTripleChecker+Valid, 5798 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:38,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2713 Valid, 5798 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 03:41:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207900 states. [2021-11-23 03:41:48,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207900 to 207887. [2021-11-23 03:41:48,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207887 states, 147912 states have (on average 1.5880523554545947) internal successors, (234892), 147917 states have internal predecessors, (234892), 53574 states have call successors, (53574), 6401 states have call predecessors, (53574), 6400 states have return successors, (53568), 53568 states have call predecessors, (53568), 53568 states have call successors, (53568) [2021-11-23 03:41:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207887 states to 207887 states and 342034 transitions. [2021-11-23 03:41:49,653 INFO L78 Accepts]: Start accepts. Automaton has 207887 states and 342034 transitions. Word has length 30 [2021-11-23 03:41:49,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:49,654 INFO L470 AbstractCegarLoop]: Abstraction has 207887 states and 342034 transitions. [2021-11-23 03:41:49,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-23 03:41:49,655 INFO L276 IsEmpty]: Start isEmpty. Operand 207887 states and 342034 transitions. [2021-11-23 03:41:49,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:41:49,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:49,657 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:41:49,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:41:49,657 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:49,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:49,658 INFO L85 PathProgramCache]: Analyzing trace with hash 505114245, now seen corresponding path program 1 times [2021-11-23 03:41:49,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:49,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027884447] [2021-11-23 03:41:49,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:49,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:50,201 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:50,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027884447] [2021-11-23 03:41:50,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027884447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:50,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:50,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:41:50,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903173065] [2021-11-23 03:41:50,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:50,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:50,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:50,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:50,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:50,205 INFO L87 Difference]: Start difference. First operand 207887 states and 342034 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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)