./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw-cxgb3--iw_cxgb3.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw-cxgb3--iw_cxgb3.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4705a4099b2770b6bf70acba4c3ce2ea2827cb6710bce661288fee177be59f8c --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:36:48,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:36:48,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:36:48,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:36:48,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:36:48,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:36:48,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:36:48,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:36:48,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:36:48,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:36:48,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:36:48,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:36:48,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:36:49,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:36:49,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:36:49,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:36:49,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:36:49,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:36:49,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:36:49,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:36:49,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:36:49,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:36:49,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:36:49,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:36:49,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:36:49,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:36:49,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:36:49,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:36:49,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:36:49,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:36:49,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:36:49,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:36:49,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:36:49,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:36:49,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:36:49,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:36:49,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:36:49,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:36:49,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:36:49,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:36:49,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:36:49,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:36:49,046 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:36:49,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:36:49,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:36:49,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:36:49,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:36:49,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:36:49,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:36:49,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:36:49,052 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:36:49,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:36:49,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:36:49,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:36:49,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:36:49,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:36:49,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:36:49,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:36:49,054 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:36:49,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:36:49,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:36:49,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:36:49,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:36:49,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:36:49,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:36:49,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:36:49,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:36:49,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:36:49,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:36:49,056 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:36:49,057 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:36:49,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:36:49,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:36:49,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4705a4099b2770b6bf70acba4c3ce2ea2827cb6710bce661288fee177be59f8c [2021-12-14 17:36:49,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:36:49,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:36:49,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:36:49,263 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:36:49,266 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:36:49,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw-cxgb3--iw_cxgb3.ko-main.cil.out.i [2021-12-14 17:36:49,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373ffb88d/e1a4ddfa0c2844f3adad9f259ef84cd6/FLAGec87eec15 [2021-12-14 17:36:50,042 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:36:50,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw-cxgb3--iw_cxgb3.ko-main.cil.out.i [2021-12-14 17:36:50,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373ffb88d/e1a4ddfa0c2844f3adad9f259ef84cd6/FLAGec87eec15 [2021-12-14 17:36:50,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373ffb88d/e1a4ddfa0c2844f3adad9f259ef84cd6 [2021-12-14 17:36:50,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:36:50,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:36:50,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:36:50,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:36:50,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:36:50,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:36:50" (1/1) ... [2021-12-14 17:36:50,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b54bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:50, skipping insertion in model container [2021-12-14 17:36:50,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:36:50" (1/1) ... [2021-12-14 17:36:50,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:36:50,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:36:52,992 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:52,994 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:52,995 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:53,547 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:53,550 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:53,551 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:53,553 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:55,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw-cxgb3--iw_cxgb3.ko-main.cil.out.i[741742,741755] [2021-12-14 17:36:55,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:36:55,950 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:36:56,181 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:56,182 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:56,182 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:56,326 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:56,334 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:56,338 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:56,347 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:36:56,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw-cxgb3--iw_cxgb3.ko-main.cil.out.i[741742,741755] [2021-12-14 17:36:56,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:36:56,694 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:36:56,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:56 WrapperNode [2021-12-14 17:36:56,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:36:56,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:36:56,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:36:56,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:36:56,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:56" (1/1) ... [2021-12-14 17:36:56,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:56" (1/1) ... [2021-12-14 17:36:56,996 INFO L137 Inliner]: procedures = 661, calls = 10636, calls flagged for inlining = 235, calls inlined = 88, statements flattened = 5816 [2021-12-14 17:36:56,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:36:56,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:36:56,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:36:56,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:36:57,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:56" (1/1) ... [2021-12-14 17:36:57,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:56" (1/1) ... [2021-12-14 17:36:57,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:56" (1/1) ... [2021-12-14 17:36:57,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:56" (1/1) ... [2021-12-14 17:36:57,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:56" (1/1) ... [2021-12-14 17:36:57,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:56" (1/1) ... [2021-12-14 17:36:57,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:56" (1/1) ... [2021-12-14 17:36:57,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:36:57,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:36:57,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:36:57,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:36:57,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:56" (1/1) ... [2021-12-14 17:36:57,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:36:57,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:36:57,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:36:57,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:36:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-12-14 17:36:57,250 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-12-14 17:36:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_rdev_close [2021-12-14 17:36:57,250 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_rdev_close [2021-12-14 17:36:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_device [2021-12-14 17:36:57,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_device [2021-12-14 17:36:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure idr_destroy [2021-12-14 17:36:57,250 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_destroy [2021-12-14 17:36:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure iwch_poll_cq_one [2021-12-14 17:36:57,251 INFO L138 BoogieDeclarations]: Found implementation of procedure iwch_poll_cq_one [2021-12-14 17:36:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:36:57,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:36:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_dev_mutex [2021-12-14 17:36:57,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_dev_mutex [2021-12-14 17:36:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_num_stags [2021-12-14 17:36:57,251 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_num_stags [2021-12-14 17:36:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure gen_pool_create [2021-12-14 17:36:57,252 INFO L138 BoogieDeclarations]: Found implementation of procedure gen_pool_create [2021-12-14 17:36:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_init_ucontext [2021-12-14 17:36:57,252 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_init_ucontext [2021-12-14 17:36:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:36:57,252 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:36:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure t3_register_cpl_handler [2021-12-14 17:36:57,252 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_register_cpl_handler [2021-12-14 17:36:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure idr_init [2021-12-14 17:36:57,253 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_init [2021-12-14 17:36:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:36:57,253 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:36:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_hal_destroy_resource [2021-12-14 17:36:57,253 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_hal_destroy_resource [2021-12-14 17:36:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:36:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure __cxio_init_resource_fifo [2021-12-14 17:36:57,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __cxio_init_resource_fifo [2021-12-14 17:36:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-14 17:36:57,254 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-14 17:36:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:36:57,254 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:36:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_dev_mutex [2021-12-14 17:36:57,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_dev_mutex [2021-12-14 17:36:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-12-14 17:36:57,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-12-14 17:36:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_hal_pblpool_free [2021-12-14 17:36:57,255 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_hal_pblpool_free [2021-12-14 17:36:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure iwch_cxgb3_ofld_send [2021-12-14 17:36:57,256 INFO L138 BoogieDeclarations]: Found implementation of procedure iwch_cxgb3_ofld_send [2021-12-14 17:36:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure ib_unregister_device [2021-12-14 17:36:57,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_unregister_device [2021-12-14 17:36:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 17:36:57,257 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 17:36:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in_r [2021-12-14 17:36:57,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in_r [2021-12-14 17:36:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:36:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 17:36:57,258 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 17:36:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 17:36:57,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 17:36:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:36:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:36:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:36:57,259 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:36:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-14 17:36:57,259 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-14 17:36:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_hal_destroy_ctrl_qp [2021-12-14 17:36:57,259 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_hal_destroy_ctrl_qp [2021-12-14 17:36:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_alloc [2021-12-14 17:36:57,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_alloc [2021-12-14 17:36:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure disable_dbs [2021-12-14 17:36:57,260 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_dbs [2021-12-14 17:36:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:36:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:36:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:36:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:36:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-14 17:36:57,260 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-14 17:36:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure iwch_event_handler [2021-12-14 17:36:57,261 INFO L138 BoogieDeclarations]: Found implementation of procedure iwch_event_handler [2021-12-14 17:36:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-14 17:36:57,261 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-14 17:36:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-14 17:36:57,261 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-14 17:36:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_out [2021-12-14 17:36:57,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_out [2021-12-14 17:36:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_int_must_check_helper [2021-12-14 17:36:57,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_int_must_check_helper [2021-12-14 17:36:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-14 17:36:57,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-14 17:36:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_net [2021-12-14 17:36:57,263 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_net [2021-12-14 17:36:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure gen_pool_free [2021-12-14 17:36:57,263 INFO L138 BoogieDeclarations]: Found implementation of procedure gen_pool_free [2021-12-14 17:36:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure iwch_poll_cq [2021-12-14 17:36:57,263 INFO L138 BoogieDeclarations]: Found implementation of procedure iwch_poll_cq [2021-12-14 17:36:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:36:57,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:36:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-14 17:36:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-14 17:36:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:36:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:36:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure enable_dbs [2021-12-14 17:36:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_dbs [2021-12-14 17:36:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure t3a_device [2021-12-14 17:36:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure t3a_device [2021-12-14 17:36:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_next_cqe [2021-12-14 17:36:57,265 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_next_cqe [2021-12-14 17:36:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-12-14 17:36:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure close_rnic_dev [2021-12-14 17:36:57,267 INFO L138 BoogieDeclarations]: Found implementation of procedure close_rnic_dev [2021-12-14 17:36:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:36:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:36:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:36:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:36:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:36:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:36:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_fatal_error [2021-12-14 17:36:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_fatal_error [2021-12-14 17:36:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:36:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:36:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2021-12-14 17:36:57,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2021-12-14 17:36:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure prandom_u32 [2021-12-14 17:36:57,273 INFO L138 BoogieDeclarations]: Found implementation of procedure prandom_u32 [2021-12-14 17:36:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:36:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 17:36:57,273 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 17:36:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:36:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure open_rnic_dev [2021-12-14 17:36:57,273 INFO L138 BoogieDeclarations]: Found implementation of procedure open_rnic_dev [2021-12-14 17:36:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_hal_cq_op [2021-12-14 17:36:57,274 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_hal_cq_op [2021-12-14 17:36:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:36:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-12-14 17:36:57,274 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-12-14 17:36:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-14 17:36:57,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-14 17:36:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:36:57,274 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:36:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb3_ofld_send [2021-12-14 17:36:57,275 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb3_ofld_send [2021-12-14 17:36:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in [2021-12-14 17:36:57,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in [2021-12-14 17:36:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure to_iwch_cq [2021-12-14 17:36:57,275 INFO L138 BoogieDeclarations]: Found implementation of procedure to_iwch_cq [2021-12-14 17:36:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure idr_for_each [2021-12-14 17:36:57,275 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_for_each [2021-12-14 17:36:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-14 17:36:57,275 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-14 17:36:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_out_r [2021-12-14 17:36:57,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_out_r [2021-12-14 17:36:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:36:57,276 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:36:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure gen_pool_destroy [2021-12-14 17:36:57,276 INFO L138 BoogieDeclarations]: Found implementation of procedure gen_pool_destroy [2021-12-14 17:36:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:36:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure get_qhp [2021-12-14 17:36:57,276 INFO L138 BoogieDeclarations]: Found implementation of procedure get_qhp [2021-12-14 17:36:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-14 17:36:57,276 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-14 17:36:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:36:57,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:36:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_init_resource_fifo [2021-12-14 17:36:57,277 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_init_resource_fifo [2021-12-14 17:36:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure __ilog2_u32 [2021-12-14 17:36:57,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __ilog2_u32 [2021-12-14 17:36:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure idr_find [2021-12-14 17:36:57,277 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_find [2021-12-14 17:36:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-14 17:36:57,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-14 17:36:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_hal_pblpool_destroy [2021-12-14 17:36:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_hal_pblpool_destroy [2021-12-14 17:36:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure gen_pool_add [2021-12-14 17:36:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure gen_pool_add [2021-12-14 17:36:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure build_fw_riwrh [2021-12-14 17:36:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure build_fw_riwrh [2021-12-14 17:36:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-12-14 17:36:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-12-14 17:36:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-14 17:36:57,279 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-14 17:36:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-14 17:36:57,280 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-14 17:36:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-14 17:36:57,280 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-14 17:36:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:36:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-14 17:36:57,961 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:36:57,964 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:37:07,505 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:37:07,515 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:37:07,515 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:37:07,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:37:07 BoogieIcfgContainer [2021-12-14 17:37:07,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:37:07,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:37:07,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:37:07,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:37:07,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:36:50" (1/3) ... [2021-12-14 17:37:07,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cca46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:37:07, skipping insertion in model container [2021-12-14 17:37:07,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:56" (2/3) ... [2021-12-14 17:37:07,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cca46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:37:07, skipping insertion in model container [2021-12-14 17:37:07,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:37:07" (3/3) ... [2021-12-14 17:37:07,523 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw-cxgb3--iw_cxgb3.ko-main.cil.out.i [2021-12-14 17:37:07,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:37:07,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:37:07,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:37:07,580 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=PETRI_NET, 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 [2021-12-14 17:37:07,581 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:37:07,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 1297 states, 937 states have (on average 1.3319103521878335) internal successors, (1248), 958 states have internal predecessors, (1248), 276 states have call successors, (276), 82 states have call predecessors, (276), 82 states have return successors, (276), 275 states have call predecessors, (276), 276 states have call successors, (276) [2021-12-14 17:37:07,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-14 17:37:07,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:07,611 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] [2021-12-14 17:37:07,611 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:07,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1033155095, now seen corresponding path program 1 times [2021-12-14 17:37:07,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:07,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680086622] [2021-12-14 17:37:07,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:07,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:08,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:37:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:37:08,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:08,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680086622] [2021-12-14 17:37:08,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680086622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:08,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:08,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:37:08,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112655372] [2021-12-14 17:37:08,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:08,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:37:08,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:37:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:37:08,116 INFO L87 Difference]: Start difference. First operand has 1297 states, 937 states have (on average 1.3319103521878335) internal successors, (1248), 958 states have internal predecessors, (1248), 276 states have call successors, (276), 82 states have call predecessors, (276), 82 states have return successors, (276), 275 states have call predecessors, (276), 276 states have call successors, (276) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:37:08,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:08,321 INFO L93 Difference]: Finished difference Result 2942 states and 4072 transitions. [2021-12-14 17:37:08,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:37:08,323 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), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-14 17:37:08,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:08,338 INFO L225 Difference]: With dead ends: 2942 [2021-12-14 17:37:08,338 INFO L226 Difference]: Without dead ends: 1635 [2021-12-14 17:37:08,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:37:08,353 INFO L933 BasicCegarLoop]: 1868 mSDtfsCounter, 424 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:08,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 3639 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:37:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2021-12-14 17:37:08,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1617. [2021-12-14 17:37:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1158 states have (on average 1.2996545768566494) internal successors, (1505), 1180 states have internal predecessors, (1505), 339 states have call successors, (339), 120 states have call predecessors, (339), 119 states have return successors, (331), 329 states have call predecessors, (331), 331 states have call successors, (331) [2021-12-14 17:37:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2175 transitions. [2021-12-14 17:37:08,444 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2175 transitions. Word has length 23 [2021-12-14 17:37:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:08,444 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2175 transitions. [2021-12-14 17:37:08,444 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), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:37:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2175 transitions. [2021-12-14 17:37:08,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-14 17:37:08,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:08,446 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] [2021-12-14 17:37:08,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:37:08,446 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:08,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:08,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2135032626, now seen corresponding path program 1 times [2021-12-14 17:37:08,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:08,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759179237] [2021-12-14 17:37:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:08,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:37:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 17:37:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:37:08,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:08,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759179237] [2021-12-14 17:37:08,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759179237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:08,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:08,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:37:08,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772896606] [2021-12-14 17:37:08,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:08,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:37:08,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:08,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:37:08,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:37:08,724 INFO L87 Difference]: Start difference. First operand 1617 states and 2175 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:37:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:08,964 INFO L93 Difference]: Finished difference Result 4481 states and 6076 transitions. [2021-12-14 17:37:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:37:08,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2021-12-14 17:37:08,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:08,979 INFO L225 Difference]: With dead ends: 4481 [2021-12-14 17:37:08,979 INFO L226 Difference]: Without dead ends: 2867 [2021-12-14 17:37:08,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:37:08,984 INFO L933 BasicCegarLoop]: 3326 mSDtfsCounter, 1727 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 5062 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:08,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1727 Valid, 5062 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:37:08,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2021-12-14 17:37:09,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2863. [2021-12-14 17:37:09,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2061 states have (on average 1.3114992721979621) internal successors, (2703), 2095 states have internal predecessors, (2703), 600 states have call successors, (600), 202 states have call predecessors, (600), 201 states have return successors, (592), 589 states have call predecessors, (592), 592 states have call successors, (592) [2021-12-14 17:37:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 3895 transitions. [2021-12-14 17:37:09,066 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 3895 transitions. Word has length 32 [2021-12-14 17:37:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:09,066 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 3895 transitions. [2021-12-14 17:37:09,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:37:09,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 3895 transitions. [2021-12-14 17:37:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 17:37:09,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:09,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:37:09,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:37:09,069 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:09,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:09,069 INFO L85 PathProgramCache]: Analyzing trace with hash 484266896, now seen corresponding path program 1 times [2021-12-14 17:37:09,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:09,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718819100] [2021-12-14 17:37:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:09,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:37:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:09,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:37:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:37:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:37:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:37:09,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:09,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718819100] [2021-12-14 17:37:09,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718819100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:09,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:09,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:37:09,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473967753] [2021-12-14 17:37:09,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:09,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:37:09,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:37:09,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:37:09,445 INFO L87 Difference]: Start difference. First operand 2863 states and 3895 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:12,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:37:14,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:37:16,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:16,309 INFO L93 Difference]: Finished difference Result 2966 states and 4065 transitions. [2021-12-14 17:37:16,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:37:16,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-12-14 17:37:16,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:16,322 INFO L225 Difference]: With dead ends: 2966 [2021-12-14 17:37:16,322 INFO L226 Difference]: Without dead ends: 2963 [2021-12-14 17:37:16,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:37:16,324 INFO L933 BasicCegarLoop]: 1695 mSDtfsCounter, 1775 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 417 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:16,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1977 Valid, 2408 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 625 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2021-12-14 17:37:16,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2021-12-14 17:37:16,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2862. [2021-12-14 17:37:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2061 states have (on average 1.3110140708393982) internal successors, (2702), 2094 states have internal predecessors, (2702), 599 states have call successors, (599), 202 states have call predecessors, (599), 201 states have return successors, (592), 589 states have call predecessors, (592), 592 states have call successors, (592) [2021-12-14 17:37:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 3893 transitions. [2021-12-14 17:37:16,447 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 3893 transitions. Word has length 51 [2021-12-14 17:37:16,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:16,447 INFO L470 AbstractCegarLoop]: Abstraction has 2862 states and 3893 transitions. [2021-12-14 17:37:16,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 3893 transitions. [2021-12-14 17:37:16,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-14 17:37:16,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:16,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:37:16,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:37:16,458 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:16,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:16,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2126832753, now seen corresponding path program 1 times [2021-12-14 17:37:16,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:16,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288569871] [2021-12-14 17:37:16,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:16,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:37:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:37:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:37:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:37:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:37:16,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:16,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288569871] [2021-12-14 17:37:16,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288569871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:16,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:16,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:37:16,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22225655] [2021-12-14 17:37:16,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:16,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:37:16,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:16,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:37:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:37:16,899 INFO L87 Difference]: Start difference. First operand 2862 states and 3893 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:19,824 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:37:22,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:37:24,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:24,197 INFO L93 Difference]: Finished difference Result 3320 states and 4458 transitions. [2021-12-14 17:37:24,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:37:24,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 52 [2021-12-14 17:37:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:24,209 INFO L225 Difference]: With dead ends: 3320 [2021-12-14 17:37:24,209 INFO L226 Difference]: Without dead ends: 3316 [2021-12-14 17:37:24,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:37:24,212 INFO L933 BasicCegarLoop]: 1740 mSDtfsCounter, 874 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 445 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 3696 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:24,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 3696 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 930 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2021-12-14 17:37:24,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2021-12-14 17:37:24,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 3185. [2021-12-14 17:37:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 2279 states have (on average 1.2926722246599385) internal successors, (2946), 2312 states have internal predecessors, (2946), 655 states have call successors, (655), 251 states have call predecessors, (655), 250 states have return successors, (650), 647 states have call predecessors, (650), 650 states have call successors, (650) [2021-12-14 17:37:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 4251 transitions. [2021-12-14 17:37:24,334 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 4251 transitions. Word has length 52 [2021-12-14 17:37:24,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:24,335 INFO L470 AbstractCegarLoop]: Abstraction has 3185 states and 4251 transitions. [2021-12-14 17:37:24,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 4251 transitions. [2021-12-14 17:37:24,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-14 17:37:24,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:24,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:37:24,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:37:24,337 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:24,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:24,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1506771635, now seen corresponding path program 1 times [2021-12-14 17:37:24,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:24,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353987553] [2021-12-14 17:37:24,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:24,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:24,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:37:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:24,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:37:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:24,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:37:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:24,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:37:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:37:24,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:24,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353987553] [2021-12-14 17:37:24,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353987553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:24,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:24,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:37:24,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533010172] [2021-12-14 17:37:24,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:24,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:37:24,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:24,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:37:24,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:37:24,729 INFO L87 Difference]: Start difference. First operand 3185 states and 4251 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:29,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:37:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:31,546 INFO L93 Difference]: Finished difference Result 3316 states and 4452 transitions. [2021-12-14 17:37:31,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:37:31,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2021-12-14 17:37:31,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:31,572 INFO L225 Difference]: With dead ends: 3316 [2021-12-14 17:37:31,572 INFO L226 Difference]: Without dead ends: 3313 [2021-12-14 17:37:31,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:37:31,575 INFO L933 BasicCegarLoop]: 1689 mSDtfsCounter, 1767 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 413 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:31,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 2400 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 626 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-12-14 17:37:31,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2021-12-14 17:37:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 3184. [2021-12-14 17:37:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 2279 states have (on average 1.2922334357174199) internal successors, (2945), 2311 states have internal predecessors, (2945), 654 states have call successors, (654), 251 states have call predecessors, (654), 250 states have return successors, (650), 647 states have call predecessors, (650), 650 states have call successors, (650) [2021-12-14 17:37:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4249 transitions. [2021-12-14 17:37:31,660 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4249 transitions. Word has length 53 [2021-12-14 17:37:31,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:31,661 INFO L470 AbstractCegarLoop]: Abstraction has 3184 states and 4249 transitions. [2021-12-14 17:37:31,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:31,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4249 transitions. [2021-12-14 17:37:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-14 17:37:31,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:31,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:37:31,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:37:31,662 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash -535248972, now seen corresponding path program 1 times [2021-12-14 17:37:31,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:31,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98883643] [2021-12-14 17:37:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:31,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:31,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:37:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:31,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:31,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:37:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:37:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:37:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:37:32,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:32,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98883643] [2021-12-14 17:37:32,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98883643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:32,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:32,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:37:32,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841632926] [2021-12-14 17:37:32,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:32,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:37:32,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:32,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:37:32,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:37:32,034 INFO L87 Difference]: Start difference. First operand 3184 states and 4249 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:33,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:37:36,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:37:37,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:37,836 INFO L93 Difference]: Finished difference Result 3315 states and 4450 transitions. [2021-12-14 17:37:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:37:37,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2021-12-14 17:37:37,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:37,849 INFO L225 Difference]: With dead ends: 3315 [2021-12-14 17:37:37,849 INFO L226 Difference]: Without dead ends: 3312 [2021-12-14 17:37:37,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:37:37,853 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 1764 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 411 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:37,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1966 Valid, 2398 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 627 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-12-14 17:37:37,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2021-12-14 17:37:37,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 3183. [2021-12-14 17:37:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3183 states, 2279 states have (on average 1.2917946467749013) internal successors, (2944), 2310 states have internal predecessors, (2944), 653 states have call successors, (653), 251 states have call predecessors, (653), 250 states have return successors, (650), 647 states have call predecessors, (650), 650 states have call successors, (650) [2021-12-14 17:37:37,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4247 transitions. [2021-12-14 17:37:37,944 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 4247 transitions. Word has length 54 [2021-12-14 17:37:37,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:37,944 INFO L470 AbstractCegarLoop]: Abstraction has 3183 states and 4247 transitions. [2021-12-14 17:37:37,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 4247 transitions. [2021-12-14 17:37:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-14 17:37:37,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:37,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:37:37,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:37:37,946 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:37,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:37,946 INFO L85 PathProgramCache]: Analyzing trace with hash 586626518, now seen corresponding path program 1 times [2021-12-14 17:37:37,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:37,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071267664] [2021-12-14 17:37:37,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:37,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:38,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:37:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:38,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:38,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:37:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:38,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:37:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:37:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:37:38,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:38,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071267664] [2021-12-14 17:37:38,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071267664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:38,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:38,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:37:38,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671385310] [2021-12-14 17:37:38,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:38,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:37:38,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:38,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:37:38,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:37:38,268 INFO L87 Difference]: Start difference. First operand 3183 states and 4247 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:42,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:37:43,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:37:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:44,437 INFO L93 Difference]: Finished difference Result 3314 states and 4448 transitions. [2021-12-14 17:37:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:37:44,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2021-12-14 17:37:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:44,449 INFO L225 Difference]: With dead ends: 3314 [2021-12-14 17:37:44,450 INFO L226 Difference]: Without dead ends: 3311 [2021-12-14 17:37:44,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:37:44,452 INFO L933 BasicCegarLoop]: 1685 mSDtfsCounter, 1761 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 411 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:44,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 2394 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 626 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-12-14 17:37:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-12-14 17:37:44,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3182. [2021-12-14 17:37:44,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3182 states, 2279 states have (on average 1.2913558578323827) internal successors, (2943), 2309 states have internal predecessors, (2943), 652 states have call successors, (652), 251 states have call predecessors, (652), 250 states have return successors, (650), 647 states have call predecessors, (650), 650 states have call successors, (650) [2021-12-14 17:37:44,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 4245 transitions. [2021-12-14 17:37:44,630 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 4245 transitions. Word has length 55 [2021-12-14 17:37:44,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:44,630 INFO L470 AbstractCegarLoop]: Abstraction has 3182 states and 4245 transitions. [2021-12-14 17:37:44,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:44,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 4245 transitions. [2021-12-14 17:37:44,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-14 17:37:44,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:44,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:37:44,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:37:44,632 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:44,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:44,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1005033207, now seen corresponding path program 1 times [2021-12-14 17:37:44,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:44,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042585596] [2021-12-14 17:37:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:44,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:44,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:37:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:44,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:44,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:37:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:44,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:37:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:44,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:37:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:37:44,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:44,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042585596] [2021-12-14 17:37:44,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042585596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:44,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:44,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:37:44,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316038205] [2021-12-14 17:37:44,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:44,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:37:44,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:44,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:37:44,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:37:44,932 INFO L87 Difference]: Start difference. First operand 3182 states and 4245 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:49,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:37:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:50,576 INFO L93 Difference]: Finished difference Result 3313 states and 4446 transitions. [2021-12-14 17:37:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:37:50,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-12-14 17:37:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:50,587 INFO L225 Difference]: With dead ends: 3313 [2021-12-14 17:37:50,587 INFO L226 Difference]: Without dead ends: 2942 [2021-12-14 17:37:50,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:37:50,589 INFO L933 BasicCegarLoop]: 1684 mSDtfsCounter, 1758 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 409 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:50,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 2392 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 625 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-12-14 17:37:50,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2021-12-14 17:37:50,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2838. [2021-12-14 17:37:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2054 states have (on average 1.3096397273612463) internal successors, (2690), 2078 states have internal predecessors, (2690), 577 states have call successors, (577), 207 states have call predecessors, (577), 206 states have return successors, (576), 574 states have call predecessors, (576), 576 states have call successors, (576) [2021-12-14 17:37:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 3843 transitions. [2021-12-14 17:37:50,673 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 3843 transitions. Word has length 56 [2021-12-14 17:37:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:50,673 INFO L470 AbstractCegarLoop]: Abstraction has 2838 states and 3843 transitions. [2021-12-14 17:37:50,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 3843 transitions. [2021-12-14 17:37:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-14 17:37:50,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:50,675 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:37:50,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:37:50,675 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:50,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:50,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1305258695, now seen corresponding path program 1 times [2021-12-14 17:37:50,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:50,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412958730] [2021-12-14 17:37:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:50,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:50,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:37:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:50,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:50,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:51,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:37:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:51,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:37:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:51,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:37:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:51,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:37:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:51,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:37:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:51,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:37:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:37:51,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:51,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412958730] [2021-12-14 17:37:51,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412958730] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:51,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:51,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:37:51,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401031388] [2021-12-14 17:37:51,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:51,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:37:51,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:51,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:37:51,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:37:51,072 INFO L87 Difference]: Start difference. First operand 2838 states and 3843 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-14 17:37:55,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []